Chevrolet Low Cab Forward 2019 Owner's Manual

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

Contents

Introduction . . . . . . . . . . . . . . . . . . . . . . 2

In Brief . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Keys, Doors, and Windows . . . . . 23

Seats and Restraints . . . . . . . . . . . 36

Storage . . . . . . . . . . . . . . . . . . . .. . . . . 52

Instruments and Controls . . . . . . . 62

Lighting . . . . . . . . . . . . . . . . . . . . . . .. . 80

Infotainment System . . . . . . . . . . . . 85

Climate Controls . . . . . . . . . . . . . . 121

Driving and Operating . . . . . . . . . 128

Vehicle Care . . . . . . . . . . . . . . . . . . 186

Service and Maintenance . . . . . 269

Technical Data . . . . . . . . . . . . . . . . 292

Customer Information . . . . . . . . . 304

Reporting Safety Defects . . . . . . 311

Index . . . . . . . . . . . . . . . . . . . . 313

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

2 Introduction

Introduction

The names, logos, emblems, slogans, vehicle model names, and vehicle body designs appearing in this manual including, but not limited to, GM, the GM logo, CHEVROLET, and the CHEVROLET Emblem are trademarks and/or service marks of General Motors LLC, its subsidiaries, affiliates, or licensors.

This manual has been prepared to acquaint you with the operation and maintenance of your vehicle, and to provide important safety information. It includes a Maintenance Schedule and is supplemented with a Warranty and Owner Assistance

Information booklet. We urge you to read these publications carefully. The following recommendations will help ensure the most enjoyable, safe, and trouble-free operation of your vehicle. When it comes to service, keep in mind that your commercial truck dealer knows your vehicle best and is interested in your complete satisfaction. Your dealer invites you to return for all of your service needs both during and after the warranty period. Remember, if you have a concern that has not been handled to your satisfaction, follow the steps in the separate Warranty and Owner Assistance Information booklet. We thank you for choosing our product, and want to assure you of our continuing interest in your motoring pleasure and satisfaction.

Model Reference

The models covered in this manual are:

Single Cab:

3500

4500

Crew Cab:

3500

4500

Litho in U.S.A. Part No. 84445127 A First Printing

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

Using this Manual

To quickly locate information about the vehicle, use the Index in the back of the manual. It is an alphabetical list of what is in the manual and the page number where it can be found.

Danger, Warning, and Caution

Warning messages found on vehicle labels and in this manual describe hazards and what to do to avoid or reduce them.

Danger

{

Danger indicates a hazard with a high level of risk which will result in serious injury or death.

Warning

{

Warning indicates a hazard that could result in injury or death.

Caution

Caution indicates a hazard that could result in property or vehicle damage.

A circle with a slash through it is a safety symbol which means “Do Not,” “Do not do this,” or “Do not let this happen.”

Warning/Caution Labels in Your Vehicle

The warning/caution labels in your vehicle indicate very important instructions and information that you should respect to ensure safe and proper use of the vehicle. Be sure to read them before using the vehicle.

Introduction 3

If any of these labels are peeling or illegible due to wear or scratches, please contact your dealer for a replacement.

Some examples of warning/caution labels are indicated on the following pages, but there are many others not shown. Also, the contents of these labels may vary from model to model.

The warning/caution labels shown may be located differently in your vehicle.

Warning/Caution Labels

Single cab model

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

4 Introduction

No. Description

1 Cab tilt instruction

Automatic transmission fluid

level

Vehicle certification and

Greenhouse Gas (GHG) emissions

4 NO STEP instruction

5 Towing

Vehicle noise emission

control information

7 Engine cooling

8 Fan blade

Vehicle emission control

information

Crew cab model

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

No. Description

Vehicle emission control

information

Vehicle certification and

Greenhouse Gas (GHG) emissions

3 Engine coolant check

4 Engine coolant level

5 NO STEP instruction

6 Power steering fluid

Vehicle noise emission

control information

8 Engine cooling

9 Fan blade

10 Towing

Automatic transmission fluid

level

Introduction 5

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

6 Introduction

No. Description

1 Safety lock pin (Single cab)

Engine cover notice

(Crew cab)

3 Radiator cap

Engine emission control

information

5 Engine coolant (Single cab)

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

In Brief

Instrument Panel

Instrument Panel . . . . . . . . . . . . . . . . 8

Instrument Panel

(Driver Side) . . . . . . . . . . . . . . . . . . 10

Instrument Panel (Vehicle

Interior) . . . . . . . . . . . . . . . . . . . . . . . 11

Initial Drive Information

Remote Keyless Entry (RKE)

System . . . . . . . . . . . . . . . . . . . . . . . 12

Getting In and Out of the

Vehicle . . . . . . . . . . . . . . . . . . . . . . . 12

Door Locks . . . . . . . . . . . . . . . . . . . . 12

Windows . . . . . . . . . . . . . . . . . . . . . . . 13

Seat Adjustment . .. . . . . . . . . . . . . 14

Seat Belts . . . . . . . . . . . . . . . . . . . . . 16

Mirror Adjustment . . . . . . . . . . . . . . 16

Steering Wheel Adjustment . . . . 16

Interior Lighting . .. . . . . . . . . . . . . . 17

Exterior Lighting . . . . . . . . . . . . . . . 18

Windshield Wiper/Washer . . . . . . 18

Climate Controls . . . . . . . . . . . . . . . 19

Vehicle Features

Radio(s) . . . . . . . . . . . . . . . . . . . . . . . 19

Portable Audio Devices . . . . . . . . 20

In Brief 7

Cruise Control . . . . . . . . . . . . . . . . . 20

Power Outlets . . . . . . . . . . . . . . . . . 21

Performance and Maintenance

Driving for Better Fuel

Economy . . . . . . . . . . . . . . . . . . . . . 21

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

8 In Brief

Instrument Panel

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

1. Air Flow Direction Control Lever. See Air Vents 0 124.

2. Exterior Lamp Controls 0 80.

Cruise Control Set Switch. See Cruise Control 0 179.

3. Windshield Wiper and Windshield Washer Switch. See Windshield Wiper/Washer 0 63.

4. Heater and Manual Air Conditioner. See Climate Control Systems 0 121.

5. Radio with CD/USB/Bluetooth. See AM-FM Radio 0 85 and Bluetooth Audio 0 108.

6. Small Article Storage Pockets. See Instrument Panel Storage 0 52.

7. Windshield Washer Fluid Tank. See Washer Fluid 0 207.

8. Glove Box 0 53.

9. Relay Box. See Electrical System Overload 0 229.

In Brief 9

10. Cupholders 0 54.

11. Hook. See Shopping Bag Hooks 0 55.

12. Card Holder. See Instrument Panel Storage 0 52.

13. Accessory Power Outlet. See Power Outlets 0 65.

14. Accessory Power Outlet. See Power Outlets 0 65.

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

10 In Brief

Instrument Panel (Driver Side)

7. Cruise Control Main Switch. See Cruise Control 0 179.

8. Hazard Warning Flasher Switch. See Hazard Warning Flashers 0 82.

9. Rear Power Window Switch. See Power Windows 0 33.

10. Odometer Check Switch. See Odometer 0 69.

11. Door Lock Switch. See Power Door Locks 0 31.

1. Instrument Panel Light Level Control. See Instrument Panel Illumination Control 0 83.

2. Rear Body Interior Light Switch. See Cargo Lamp 0 84.

3. Instruments, Warning Lights and Indicator Lights. See Instrument Cluster 0 68.

4. Horn Button. See Horn 0 63.

5. Rear Power Window Lock Switch. See Power Windows 0 33.

6. Outside Rearview Mirror Heater Switch. See Heated Mirrors 0 32.

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

Instrument Panel (Vehicle Interior)

In Brief 11

7. Cupholders 0 54.

8. Parking Brake Lever. See Parking Brake 0 176.

9. Selector Lever 0 172.

10. Fully Adjustable Steering. See

Steering Wheel Adjustment

0 62.

1. Overhead Tray. See Storage Compartments 0 52.

2. Sun Visor. See Sun Visors 0 35.

3. Dome Lamps 0 84.

4. Seat Belt. See Three-Point Seat Belt 0 43.

5. Seat Back Pocket (Driver’s Side). See Storage Compartments 0 52.

6. Seat. See Seat Position 0 36.

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

12 In Brief

Initial Drive Information

Remote Keyless Entry (RKE) System

Unlocking and Locking the Doors

Unlocking

Press the unlock button (2) of the remote control unit for 1 second or longer. The vehicle's keyless entry system causes the right and left turn

signal lights to simultaneously flash twice upon receiving the signals from the remote control unit.

Locking

Press the lock button (1) of the remote control unit for 1 second or longer. The vehicle's keyless entry system causes the right and left turn signal lights to simultaneously flash once upon receiving the signals from the remote control unit.

See Remote Keyless Entry (RKE) System Operation 0 24.

Getting In and Out of the Vehicle

Carefully check that the area around the vehicle is safe, hold the grip, and place your foot on the step when getting in or out of the vehicle.

See Getting In and Out of the Vehicle 0 27.

Door Locks

Locking and Unlocking the Door from Outside Using the Key

Turn the key toward the front of the vehicle to lock the door and turn it toward the rear of the vehicle to unlock it. The doors can be opened by pulling the outside door handle.

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

Locking the Door from Outside without Using the Key

Locking and Unlocking the Door from Inside

In Brief 13

Windows

Window Switches on Driver’s Door

First, push the lock button (1) on the inside door handle forward and then close the door while keeping the outside door handle (2) raised.

Before closing the door, be sure to check that you have the key with you.

Push the lock button (1) forward to lock the door; pull the lock button backward to unlock it. After unlocking the door, open it by pulling the inside door handle (2). If the door is locked, the lock mechanism overrides operation of the door handle.

The power window switch on the driver’s door can operate both driver’s (2) and passenger’s (1) power windows.

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

14 In Brief

To Open the Driver’s Window

Lightly pressing the driver-side window switch will lower the driver’s window until the switch is released (manual mode operation). When the switch is firmly pressed, the window will lower completely without the need to press the switch continuously (automatic mode operation). If you want to stop the automatic movement of the window before it lowers completely, raise the switch lightly.

To Close the Driver’s Window

Lightly raising the driver-side window switch will cause the driver's window to move up until the switch is released.

To Open the Passenger’s Window

The passenger's window continues to lower while the passenger-side switch on the driver's door is being pressed.

To Close the Passenger’s Window

The passenger's window continues to move up while the passenger-side switch on the driver's door is being raised.

Window Switches on Passenger’s Door

The power window switch on the passenger's door can raise and lower the passenger's side window only and rear doors, if equipped.

The window continues to lower while the window switch is being pressed and continues to rise while the switch is being raised. It will stop moving at any position when the switch is released.

Seat Adjustment

Driver’s Seat

Forward/backward Adjustment

While raising the unlock lever, move the seat forward or backward. Release the lever when the seat is in the desired position. After making adjustments, try to move the seat back and forth to check that it is fully locked.

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

Reclining Adjustment

To recline the seatback, raise the seatback tilt lever and gently lean back to the desired position.

To move the seatback forward, lean forward with your back slightly clear of the seatback and raise the lever. After making adjustments, check that the seatback is fully locked.

See Seat Position 0 36.

Passenger’s Seat/Center Seat

Passenger’s Seat

In Brief 15

Center Seat

You can tip the seatback forward if you pull forward the lever at the side of the seatback. Normally, you should keep the seatback in the raised position.

See Seat Position 0 36.

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

16 In Brief

Seat Belts

Refer to the following sections for important information on how to use seat belts properly:

Seat Belts 0 41

Three-Point Seat Belt 0 43

Child Restraint Systems 0 49

Mirror Adjustment

Sit in the correct driving position with the seat adjusted properly. Then, check each mirror to ensure that a proper view of the rear and sides of the vehicle are provided. Make adjustments and clean mirrors if necessary.

Outside Rearview Mirrors

After properly adjusting your seat for proper driving position, adjust the mirrors so that they provide adequate views for checking the rear and the sides of the vehicle. Adjust the outside rearview mirrors by hand before vehicle operation. This helps you determine the location of objects seen in the mirror. If the outside mirror fogs up, warm up the outside rearview mirror's face to defog.

See Mirrors 0 31.

Steering Wheel Adjustment

Warning

{

Adjust the position of the steering wheel before you start driving.

To reduce the risk of personal injury, apply force to the steering wheel to make certain the steering column is firmly locked before driving. Also, do not try to tilt or adjust the steering wheel while the vehicle is moving. If these steps are not followed, the steering column could move suddenly while the vehicle is in motion which could cause a temporary loss of steering control which may result in personal injury or death.

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

3. Firmly lock the steering wheel at the selected position by moving the lock lever to the lock position.

Interior Lighting

Front Light

The steering wheel is adjustable up and down as well as forward and backward.

Before adjusting, position the seat as desired.

1. Lift the lock lever toward you to unlock the steering column.

2. Sit in the correct driving position, and then move the steering wheel up and down and forward and backward to select the optimum steering wheel position.

The dome light operates regardless of the engine control switch position. The switch has three positions.

ON : The light stays on regardless of the doors being open or closed.

OFF : The light stays off regardless of the doors being open or closed.

In Brief 17

Between ON and OFF, the light comes on when the driver's door is opened.

Rear Light (Crew Cab Model Only)

The dome light operates regardless of the engine control switch position. The switch has three positions.

ON : The light stays on regardless of the doors being open or closed.

OFF : The light stays off regardless of the doors being open or closed.

Between ON and OFF, the light comes on when the driver's door is opened.

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

18 In Brief

Exterior Lighting

time period with the engine off. Otherwise, the battery may go dead, making it impossible to restart the engine.

9 : Turns off all exterior lights. ; : Turns on the parking lights

including all exterior lights, except the headlights.

2 : Turns on the headlights

together with the parking lights, sidemarker lights, roofmarker lights, taillights, license plate light, and instrument panel lights.

Turning the light control switch to the following positions will cause the relevant lights to illuminate.

The light control switch can be used when the engine control switch is placed in the LOCK or ACC position. Do not operate the combination lights for an extended

Exterior Lamp Controls 0 80.

Windshield Wiper/Washer

To use the windshield wiper and washer switches, the engine control switch must be in the ON position.

The windshield wiper switch has the following positions, which correspond to the states of the wiper.

9 : Stopped. 3 : Intermittent, light rain.

Low Speed : Low speed, moderate rain.

High Speed : High speed, heavy rain.

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

Windshield Washer

Windshield washer fluid is sprayed over the windshield when this switch is pressed. At the same time, the windshield wiper operates.

To spray washer fluid on the windshield, push the button on the end of the combination switch lever. The spray will continue as long as you hold in the button.

See Windshield Wiper/Washer 0 63.

Climate Controls

The heating, cooling, and ventilation for the vehicle can be controlled with this system.

Climate Control System w/Air

Conditioning shown, Heater Only

similar

1. Outlet Selector Knob

2. Air Selector Lever

3. Temperature Control Knob

4. Air Conditioning (A/C) Switch, if equipped

5. Fan Speed Control Knob

See Climate Control Systems 0 121.

In Brief 19

Vehicle Features

Radio(s)

Turning the Power On or Off

Press MODE/ power on. Press and hold it for one second or more to turn the power off.

If MODE/ while listening to music in audio mode, the power is turned off. When

MODE/ the audio system resumes the last mode just before it was turned off.

Adjusting the Volume

Turn the MODE/ clockwise or counterclockwise to increase or decrease the volume.

Tuning

Manual tuning:

1. Press Tune/Track less than one second.

O /ENTER to turn the

O /ENTER is pressed

O /ENTER is pressed again,

O /ENTER knob

y or z for

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

20 In Brief

2. Press Tune/Track y or z for

less than one second again to select the station of your choice.

Settings

Adjustment of bass, treble, fader, and balance, and setting of clock display and time can be performed. See “Function Setting Mode” in AM-FM Radio 0 85.

CD Player

To play a CD, see CD Player 0 90.

Portable Audio Devices

This vehicle is equipped with a

3.5 mm (1/8 in) auxiliary input jack and a USB port in the radio faceplate. External devices such as iPods, laptop computers, MP3 players, and USB storage devices may be connected.

See USB Port 0 98 and Auxiliary Devices 0 107.

Cruise Control

1. Press the cruise control main switch to turn it on.

At this time, the cruise main indicator light comes on simultaneously.

2. Use the accelerator pedal to adjust the vehicle to the desired speed. Upon reaching the desired speed, turn the cruise control set switch. The vehicle speed at the moment you operate the switch is set in the system, enabling you to drive with the set speed automatically maintained without using the accelerator pedal.

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

instructions that are included with any electrical equipment you install. These circuits are protected by a fuse and have maximum current loads.

At the same time the cruise set indicator light comes on.

See Cruise Control 0 179.

See Power Outlets 0 65.

Power Outlets

You can plug in auxiliary electrical equipment. Just flip the outlet cover open from the left edge of the cover and follow the proper installation

In Brief 21

Performance and Maintenance

Driving for Better Fuel Economy

Economical Driving

How you drive, where you drive and when you drive all affect fuel economy.

Drive at a constant speed as much as possible. When accelerating, increase your speed gently and slowly, and up-shift early.

Maintain a constant cruising speed, as traffic allows, and avoid sudden stops.

Frequent short trips, excessive idling and use of the air conditioner in cool weather when "Vent" would provide adequate comfort, can all lead to decreased fuel economy.

Warming up the engine for longer than necessary, driving with the vehicle overloaded and revving the engine are a waste of fuel.

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

22 In Brief

The careful attention you give your vehicle, as far as maintenance is concerned, will also help fuel economy.

Protection of Engine against Overcooling

Overcooling of the engine not only accelerates wear of the vital engine parts but also hurts fuel economy.

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

Keys, Doors, and Windows

Keys and Locks

Keys

Keys and Locks

Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Remote Keyless Entry (RKE)

System . . . . . . . . . . . . . . . . . . . . . . . 24

Remote Keyless Entry (RKE)

System Operation . . . . . . . . . . . . 24

Getting In and Out of the

Vehicle . . . . . . . . . . . . . . . . . . . . . . . 27

Door Locks . . . . . . . . . . . . . . . . . . . . 28

Power Door Locks . . . . . . . . . . . . . 31

Vehicle Security

Vehicle Security . . . . . . . . . . . . . . . . 31

Exterior Mirrors

Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . 31

Heated Mirrors . . . . . . . . . . . . . . . . . 32

Windows

Power Windows . . . . . . . . . . . . . . . 33

Sun Visors . . . . . . . . . . . . . . . . . . . . . 35

1. Main Key

2. Spare Key

3. Metal plate with key code

One key (1) can operate all the locks on the vehicle. Keep one of the two keys provided as a spare (2). Record the key code numbers.

Keys, Doors, and Windows 23

Both sides of the key are identical, so you can insert the key in the engine control switch without worrying about which way you insert it.

The key code is indicated on a separate metal plate (3) in order to prevent it from being acquired by an unauthorized person.

Where is the Key Used?

Where For What

Engine Control Switch

Front doors Locking and

Wipe off the key to remove any dirt or dust, etc. before using it.

To prevent theft, store the metal plate with key code in a safe place other than the vehicle.

Should you lose the key, please give the key number to the nearest dealer. The dealer will be able to duplicate your key.

Starting and shutting down the engine

unlocking the doors.

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

24 Keys, Doors, and Windows

If you resell the vehicle, be sure to hand over the plate with key code to the new owner together with the vehicle.

Remote Keyless Entry (RKE) System

See Radio Frequency Statement 0 311.

If there is a decrease in the Remote Keyless Entry (RKE) operating range:

Check the distance. The transmitter may be too far from the vehicle.

Check the location. Other vehicles or objects may be blocking the signal.

Check the transmitter's battery. See “Replacing the Battery in the Remote Control Unit” later in this section.

If the transmitter is still not working correctly, see your dealer or a qualified technician for service.

Remote Keyless Entry (RKE) System Operation

The keyless entry system allows you to lock/unlock the doors by simply pressing the remote control button rather than inserting the key into the lock.

The remote control unit works within a 10 m (33 ft) radius of the cab center as indicated in the figure. The actual distance over which the unit operates may vary depending on conditions.

Unlocking and Locking the Doors

Remote Control Unit

Unlocking

Press the unlock button (2) of the remote control unit for 1 second or longer. The vehicle's keyless entry system causes the right and left turn signal lights to simultaneously flash twice upon receiving the signals from the remote control unit.

Locking

Press the lock button (1) of the remote control unit for 1 second or longer. The vehicle's keyless entry

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

system causes the right and left turn signal lights to simultaneously flash once upon receiving the signals from the remote control unit.

Should you lose the remote control unit, please contact your dealer.

After locking the doors using the remote control unit, be sure to check that they are locked by pulling the door handles.

Avoid getting water on the remote control unit, dropping it, hitting it against another object, or stepping on it; otherwise, the remote control unit could malfunction.

Do not leave the remote control unit on the dashboard or any other surface where the unit might be exposed to high temperatures (exceeding 60°C/140°F). Doing so may result in shorter battery life or malfunction of the remote control unit.

If the keyless entry system fails to operate normally, lock and unlock the doors using the key and have the system inspected by your dealer.

The lock or unlock buttons on the remote control unit must be fully pressed for more than 1 second to work.

If you do not open any doors within about 30 seconds after pressing the unlock button to unlock the doors, the automatic locking function of the system will lock the doors again to prevent theft.

In areas near a TV tower, electric power plant, radio station, etc. or under any conditions involving strong electrical disturbances, the remote control unit operating range might change or the keyless entry system might not work.

The keyless entry system does not operate in the following cases:

The engine control switch is in the "ON" position.

The key is inserted in the engine control switch.

One of the doors is open.

Keys, Doors, and Windows 25

Replacing the Battery in the Remote Control Unit

When the battery runs down, replace it. Battery life is approximately two years.

Battery Used

Lithium battery 1

Model number: CR 2032

Voltage: DC3V

1. Battery Cover

Number of

Battery

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

26 Keys, Doors, and Windows

2. Remote Control Cover Notch

3. Remote Control Unit Cover

4. Remote Control Unit

5. Battery

2. Remove the battery cover (1).

1. Pry open the remote control unit cover (3) by inserting a flat head screwdriver or similar tool into the notch of the remote control unit cover (2). Wrap a piece of cloth or tape around the tip of the screwdriver so as not to damage the remote control unit cover (3).

3. Insert a flat head screwdriver or similar tool into the recess of the remote control unit (4) to remove the old battery.

4. Insert the new battery into the remote control unit (4) with its positive side visible, and press the battery downward until fully seated.

5. Install the remote control unit (4), battery (5), and battery cover (1) in their original positions inside the remote control unit cover (3).

6. Close the remote control unit cover (3).

When closing the remote control unit cover (3), check that there is no dust, hair, or anything else caught underneath it. A poorly sealed remote control unit could become deteriorated.

Please comply with the collection system available in your country for the disposal of old batteries. In addition, take special care to prevent any danger to children.

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

Keys, Doors, and Windows 27

Warning

{

When changing the battery, use only a battery of the same type as the original battery, or an equivalent. Otherwise, there is a risk of explosion.

Do not place the battery in direct sunlight, or near a fire or other sources of heat.

Be sure to install the battery with the "+" and "-" sides correctly oriented. Incorrect installation will result in leakage of chemicals from inside the battery or other operational problems.

You and others could be seriously injured.

The battery life varies depending on how the remote control unit is used.

The battery has reached its end of life when the remote control unit works intermittently or does not work at all. Replace the battery as soon as this happens.

Getting In and Out of the Vehicle

Carefully check that the area around the vehicle is safe, hold the grip (1), and place your foot on the step (2) when getting in or out of the vehicle.

{

When getting in or out of the vehicle, make sure you use the step and grips to support yourself

Warning

(Continued)

Warning (Continued)

at 3 points. It is very dangerous to stand on the tire or wheel when getting in or out of the vehicle.

Furthermore, do not try to jump in or out of the vehicle, as doing so could cause unexpected accidents or injuries.

Getting in or out of the vehicle with oily or greasy hands or shoes could cause you to slip. Always thoroughly clean grease, etc. from your hands and shoes before getting in or out of the vehicle.

Rain and snow can cause the step to become very slippery. Therefore, always remove snow and ice from your shoes and the step, and be careful not to slip when getting in and out of the vehicle.

(Continued)

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28 Keys, Doors, and Windows

Warning (Continued)

Exercise caution when opening or closing doors, as strong winds or steep slopes may cause doors to open or close suddenly.

Do not hold parts other than the grip when getting in or out of the vehicle. Doing so may cause damage to the vehicle or injuries to yourself or others.

You and others could be seriously injured.

Door Locks

Warning

{

Be sure to do the following whenever you leave the vehicle:

1. Fully engage the parking brake.

2. Stop the engine.

3. Lock the doors.

(Continued)

Warning (Continued)

When you close the door after sitting behind the wheel, check that the door is fully closed. Driving with any door ajar is very dangerous.

Before opening the door when climbing into or out of the cab, carefully check all areas around the vehicle for safety, especially the area at the rear of the vehicle. If you suddenly open a door without checking the surrounding area, the door could be hit by a vehicle behind you or a pedestrian.

Never leave the key in the vehicle.

Tilt the cab only after fully closing the doors.

To help reduce the risk of personal injury in an accident, always lock the doors when driving. Along with using the seat

(Continued)

Warning (Continued)

belts properly, locking the doors helps prevent people from being thrown from the vehicle. It also helps prevent unintended opening of the doors and helps keep out intruders.

You and others could be seriously injured.

Warning

{

To protect the child from the danger of getting his/her hands and head trapped, an adult must open, close and lock the door for the child.

Be careful that the child does not interfere with the power window switches and get his/her hands or head trapped in the window. While a child is in the cab, be

(Continued)

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

Warning (Continued)

sure to control the power windows using the power window switches beside the driver's seat.

You and others could be seriously injured.

Overriding door locks are a standard safety feature. When the doors are locked, the inside handles will not open them. This is to prevent accidental opening of the doors.

Front Doors

Locking and Unlocking the Door from Outside Using the Key

Turn the key toward the front of the vehicle to lock the door and turn it toward the rear of the vehicle to unlock it. The doors can be opened by pulling the outside door handle.

Keys, Doors, and Windows 29

Locking the Door from Outside without Using the Key

First, push the lock button (1) on the inside door handle forward and then close the door while keeping the outside door handle (2) raised.

Before closing the door, be sure to check that you have the key with you.

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

30 Keys, Doors, and Windows

Locking and Unlocking the Door from Inside

Rear Doors

Outside Door Handles

A handle for opening each cab door from outside the cab is located at the rear edge of the door's outer panel. To open the door from outside the vehicle, pull up on the handle.

Locking the Door from the Outside

Push the door lock button forward and then close the door; the door will be locked.

Inside Door Handles

An inside handle for opening each cab door is located in the recessed area at the front of the door. To open the door, pull on the handle. If the door is locked, the lock mechanism overrides operation of the door handle. The door must first be unlocked before the handle can be used to open the door.

Locking and Unlocking Doors from the Inside

Push the door lock button (1) forward to lock the door and pull the lock button backward to unlock it.

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

Keys, Doors, and Windows 31

Power Door Locks

Power Door Lock (Central Door Lock)

How the Power Door Lock System Operates

When you lock the driver's door using the key or by operating the lock button, the power door lock system will automatically lock all doors simultaneously.

Door Lock Switch

Both doors can be locked and unlocked by pressing the power door lock switch.

Vehicle Security

Guard Against Theft

Your new vehicle has many features to help prevent theft of the vehicle, its equipment and contents. But these anti-theft features depend upon you to work.

The time to be most on guard is when leaving the vehicle:

Park in a lighted spot when you can.

Turn the engine control switch to "LOCK" and remove the key. This locks the switch and the steering controls. The selector lever is not locked.

Keep items that may appear to be of value out of sight and locked up when possible.

Fully close all windows and lock all doors.

Exterior Mirrors

Mirrors

Outside Rearview Mirrors

See Heated Mirrors 0 32.

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32 Keys, Doors, and Windows

Warning

{

Before driving, be sure to adjust the seat and mirrors to positions that give you a correct driving posture.

Do not adjust the outside mirrors while operating the vehicle. Adjust the mirrors when the vehicle is stationary, not while the vehicle is in motion.

When checking the rear of the vehicle with mirrors, be careful that this does not distract your attention from the traffic ahead.

Outside mirrors may make the vehicle behind you appear farther away than it really is. Use these mirrors very carefully until you are able to correctly determine distances from the images.

(Continued)

Heated Mirrors

Warning (Continued)

Keep the mirrors in mind when passing another vehicle on a narrow road, moving the vehicle into a garage, or driving near pedestrians.

Do not drive with the mirrors folded.

You and others could be seriously injured.

If the outside mirrors fog up, press the outside rearview mirror heater switch to defog them. When the switch is pressed the indicating light will illuminate. If the switch is pressed once again, it will switch to “OFF”, and the operation indicating light will go out.

Do not use this switch while the engine is off. Due to high power consumption, the battery can be discharged.

Turn off the switch as soon as defogging is complete.

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

Windows

Power Windows

Warning

{

If you are traveling with a child, do not leave the child alone in the vehicle. If the child touches the controls or equipment, an accident could occur. (For example, the vehicle could move or a fire could start.) Also, the cab inside could become dangerously hot in hot weather.

Warning

{

Before closing the windows, make sure that there is no risk of a hand, head, or anything else being trapped in the moving window.

You and others could be seriously injured.

Regardless of whether the vehicle is moving or stationary, you must never allow a child to put his/her head, hands, or other body part out of the window. Allowing such behavior would be dangerous because the child could hit an obstacle.

You and others could be seriously injured.

The power windows operate only when the engine control switch is in the ON position. Open each door window by pressing the power window switch; close each one by raising the switch.

{

Warning

Keys, Doors, and Windows 33

Window Switches on Driver’s Door

The power window switch on the driver’s door can operate both driver’s (2) and passenger’s (1) power windows.

To Open the Driver’s Window

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34 Keys, Doors, and Windows

operation). If you want to stop the automatic movement of the window before it lowers completely, raise the switch lightly.

To Close the Driver’s Window

Lightly raising the driver-side window switch will cause the driver's window to move up until the switch is released.

To Open the Passenger’s Window

The passenger's window continues to lower while the passenger-side switch on the driver's door is being pressed.

To Close the Passenger’s Window

The passenger's window continues to move up while the passenger-side switch on the driver's door is being raised.

Window Switches on Passenger’s Door and Rear Doors (If equipped)

The power window switch on the passenger's door can raise and lower the passenger's side window

only, while, if equipped, the rear power window switches can raise and lower the rear door windows.

Warning

{

Be sure to warn passengers not to let any part of the body become trapped or caught in a moving window.

You and others could be seriously injured.

The window continues to lower while the window switch is being pressed and continues to rise while the switch is being raised. It will stop moving at any position when the switch is released.

When the rear power window lock switch is in the “LOCK” position, it is not possible to open and close the rear windows.

Window Switches on Center of Dashboard (Crew Cab Model)

The power window switch on the instrument panel and rear door can raise and lower the rear door window.

To Open a Rear Window

Rear Power Window Switch

The window glass will move downward while you are pushing the bottom part of the switch.

To Close a Rear Window

The window glass will move upward while you are pushing the top part of the switch.

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

To Lock Rear Power Windows

Rear Power Window Lock Switch

If you push the rear power window lock switch, only the driver's window and front passenger's window will open. To cancel the rear power window lock, push the switch again. Use the rear power window lock switch to "LOCK" the rear power windows. By doing so, you can prevent passengers from operating the rear power windows.

Sun Visors

Driver’s Side

Keys, Doors, and Windows 35

Passenger’s Side

The sun visor (1) protects your eyes in strong sunlight. Use it when sunlight is too bright. To reduce side glare, unhook (2) the sun visor (1) and swing it around to the side.

Make sure to fold up the sun visor after use.

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36 Seats and Restraints

Seats and Restraints

Front Seats

Seat Position . . . . . . . . . . . . . . . . . . 36

Rear Seats

Rear Seats (Crew

Cab Only) . . . . . . . . . . . . . . . . . . . . 40

Front Seats

Seat Position

Warning

{

Use caution when adjusting the seat, as failure to do so could cause injury. You and others could be seriously injured.

Seat Belts

Seat Belts . . . . . . . . . . . . . . . . . . . . . 41

Three-Point Seat Belt . . . . . . . . . . 43

Seat Belt Use During

Pregnancy . . . . . . . . . . . . . . . . . . . . 45

Lap Belt . . . . . . . . . . . . . . . . . . . . . . . 46

Seat Belt Extender . . . . . . . . . . . . . 47

Safety System Check . . . . . . . . . . 47

Seat Belt Care . . . . . . . . . . . . . . . . . 47

Child Restraints

Child Restraint Systems . . . . . . . 49

Never allow children to adjust their seats themselves; an adult should adjust the seat for occupants who are children. You and others could be seriously injured.

{

Warning

{

Adjust the seat only before you start driving. Adjusting the seat while the vehicle is in motion must be avoided not only because the unlocked seat will move back and forth unstably, preventing you from taking the correct position, but might also cause you to lose control of the vehicle, possibly resulting in an accident. You and others could be seriously injured.

Warning

{

Try to move the seat without unlatching it after making adjustments to check that it is completely locked. A loosely locked seat may move unexpectedly and your position might then become unstable; this could lead to an accident. Take

(Continued)

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

Seats and Restraints 37

Warning (Continued)

the vehicle to your dealer for service if you find that your seat adjusters do not latch. In addition, the seat belt will not operate properly if the seatback is not completely locked. You and others could be seriously injured.

Warning

{

Driving with the seat excessively reclined could be very dangerous in the event of a collision or sudden stop. Raise the seatback, and apply the seat belt correctly while sitting straight in the seat. You and others could be seriously injured.

Do not place a cushion or similar object between your back and the seatback. Doing so not only affects the stability of your driving position but also prevents the seat belt from working effectively in the event of a collision. You and others could be seriously injured.

Do not place any objects under the seat. If there are any objects under the seat, the seat could be locked in an improper position. You and others could be seriously injured.

{

Warning

{

Before making adjustments, check that the seat rails are free of anything that could obstruct the locking of the seat. Be careful that your hand or foot does not become trapped in the seat or rails when adjusting the seat. You and others could be seriously injured.

Warning

{

When adjusting the seat, be careful that the seat does not hit passengers or objects. Doing so could cause injury to passengers, or damage objects. You and others could be seriously injured.

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38 Seats and Restraints

Warning

{

Make sure not to hit passengers or luggage when adjusting your seat. You and others could be seriously injured.

Warning

{

When adjusting the seat, or when getting up from the seat, do not put your hand or other objects under the seat or near moving parts. Doing so could cause injury or damage to objects.

Driver’s Seat

The driver's seat must be adjusted so that when you sit well back in the seat, you can fully press the pedals without moving your back from the seatback, and you can operate the steering wheel easily and freely. After making adjustments, check that the seat is completely locked.

Adjusting the seat for a correct driving posture is a fundamental part of safe driving.

Forward/backward Adjustment

Reclining Adjustment

Warning

{

To reduce the risk of sliding under the lap belt during a collision, an occupied reclining seat should not be reclined any more than needed for comfort. The seatback and seat belts provide best restraint only when the rider is sitting well back and straight up in the seat. (The lap belt is designed to spread the force of a collision over the hipbone. If you are reclined, the lap belt may slide past your hips and apply restraint forces directly to the abdomen. Therefore, in the event of a collision, the risk of personal injury will increase with increasing recline of the seatback). You and others could be seriously injured.

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

Warning

{

Do not adjust the reclining seatback on the driver's seat while the vehicle is moving. The seatback could jerk and cause a loss of control. You and others could be seriously injured.

To recline the seatback, raise the seatback tilt lever and gently lean back to the desired position.

To move the seatback forward, lean forward with your back slightly clear of the seatback and raise the lever. After making adjustments, check that the seatback is fully locked.

Suspension Adjustment

Avoid making any kind of contact with the pointer on the scale. Doing so may result in damage to the pointer, preventing appropriate weight adjustments from being possible.

Before sitting on the seat, use the knob to adjust the suspension to suit your weight. Turn the knob clockwise to move the pointer down

Seats and Restraints 39

the scale and counterclockwise to move it up the scale. The pointer should be alongside your weight on the scale.

The range of adjustment is 50-130 kg (110-290 lbs). If your weight is outside this range, the suspension may not be fully effective. However, you will be able to sit in the correct position for driving.

Avoid inserting fingers or objects between (1) the inner (3) and outer (2) seatback, as doing so may prevent the seat suspension from operating properly.

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

40 Seats and Restraints

Passenger’s Seat/Center Seat

Warning

{

Baggage must not be placed on the center seat. If the baggage falls on the floor when braking, it may prevent the driver from operating the pedals. You and others could be seriously injured.

Rear Seats

Rear Seats (Crew Cab Only)

Do not remove the seat cushion except when taking out or stowing onboard tools.

Warning

{

Center Seat

You can tip the seatback forward if you pull forward the lever at the side of the seatback. Normally, you should keep the seatback in the raised position.

Passenger’s Seat

Do not drive with the seat cushion removed. The seat would not be stable, which could lead to an accident. You and others could be seriously injured.

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

Seat Belts

The rear seat headrests are not adjustable.

Do not use the rear seats with the headrests removed during driving.

The protection provided by seat belts might be significantly reduced if they are not fastened properly; in certain cases, improperly fastened seat belts can even play a role in causing injury to the wearer. Seat belts must be worn not only by the driver but also by the passenger(s) before the vehicle starts moving. You should be fully acquainted with the proper use of seat belts and important points to be respected as described in the following pages.

Seats and Restraints 41

Familiarizing yourself with the correct use of seat belts is essential for your safety.

Warning

{

To help reduce the risk of personal injury in collisions or sudden maneuvers, use the seat belts following these instructions on their proper use, maintenance, and use with child restraint systems.

Seat belts must always be fastened BEFORE starting to drive.

Seat belts provide full protection only when the driver and passenger(s) fasten them while sitting upright and fully back on the seat.

Wearing a seat belt with the seatback excessively reclined could be very dangerous in a collision or sudden stop since the occupant may slide under the belt

(Continued)

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42 Seats and Restraints

Warning (Continued)

and be seriously injured. Seat belts work best only when the occupant is sitting well back and straight up in the seat.

Be sure to insert the latch plate into the buckle until a click is heard. An incompletely inserted latch plate is dangerous in the event of a collision or sudden stop.

Do not run the seat belt over your face, chin or neck.

Wear the seat belt as low as possible around the hips, not around the waist. A seat belt running over the waist would press the abdomen with a strong force and could increase the likelihood of injuries in a collision or sudden stop.

Do not use a seat belt for a small child if the belt is on or very close to the child's neck or chin. Also,

(Continued)

Warning (Continued)

do not use a seat belt if it does not fit snugly over the child's hips because restraining the child under those conditions could be dangerous in the event of a collision or sudden stop. Instead, use an appropriate child restraint system available on the market. For further details, please contact your dealer.

Use a child restraint system that fits the size of the infant or child. Install the system according to the manufacturer's instructions.

Children who have outgrown child restraint systems should use the vehicle's seat belts.

Remove any twists in the seat belt before fastening it. A seat belt with twists will not provide full protection because it cannot

Warning (Continued)

disperse shocks efficiently in the event of a collision or sudden stop.

Too much slack could increase the amount of injury because the belt would not be able to properly restrain you in an accident.

Do not put the lap portion of a seat belt over any armrest.

Do not wear a shoulder belt under your arm nearest the door.

Do not let a buckle release button face downward or inward.

Expectant mothers or people suffering from chest or abdominal conditions should check with their doctor for specific recommendations about wearing seat belts.

(Continued)

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

Seats and Restraints 43

Warning (Continued)

Do not use one seat belt for more than one person. If worn by more than one person, the seat belt would not work effectively in a collision or sudden stop.

Have seat belts inspected and, if necessary, replaced by the nearest dealer when the webbing becomes frayed or worn and/or when the buckle or other mechanical parts fail to work properly.

If your vehicle has been involved in a collision, the seat belts worn at the time may have lost their original strength due to impact even if they appear intact. These seat belts must be inspected and, if necessary, replaced by the nearest dealer.

(Continued)

Warning (Continued)

Be careful to keep the buckles and retractors free of dust and foreign matter. (This may jam the retractor or damage the belt.)

Do not let the belt system become damaged by the door or seat.

Do not let the belt twist while it is rewinding: it may cause the retractor to jam so it will not rewind further. If it is not fully rewound, the belt cannot be pulled out. Should the belt jam, you may be able to release it by working the belt in and out until the belt rewinds far enough to unlock. However, if the belt remains jammed or other parts of the restraint system do not work properly, have your dealer service it.

(Continued)

Warning (Continued)

Wearing seat belts is a legal requirement. All other passengers must wear seat belts. The driver is responsible not only for wearing a seat belt himself/herself but also for prompting all passengers to wear their seat belts. It is necessary, however, to check with a doctor about the appropriateness of a seat belt for an expectant mother or a passenger with a chest/abdominal condition.

Three-Point Seat Belt

Warning

{

The shoulder belt should be adequately positioned on your shoulder but should not touch your neck and/or face. The shoulder belt could harm you in a

(Continued)

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

44 Seats and Restraints

Warning (Continued)

collision or sudden stop if it is in contact with your neck and/ or face.

Every seat except the center seat on your vehicle is equipped with a three-point seat belt. The seat belt extends or retracts freely if the wearer moves slowly, but it locks and restrains the occupant during forward force caused by the occupant's body following a strong shock.

To Fasten:

1. Sit on the seat in the correct driving position.

2. Pull out the seat belt holding the latch plate. After checking that there are no twists in the belt, insert the latch plate into the buckle until it clicks. If the retractor locks before the latch plate reaches the buckle, let the belt retract slightly, then withdraw it slower than before.

3. To reduce the risk of sliding under the belt during a collision, position the belt across your lap as low on your hips as possible and adjust it to a snug fit by pulling the "shoulder" portion upward through the latch plate.

The lap-shoulder belt is designed to lock during a sudden stop or impact. At other times it should move freely.

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

To Unfasten:

Push the button on the buckle. As the belt automatically retracts, let it be taken up slowly by holding on to the latch plate until the belt is fully retracted.

While being automatically retracted, the seat belt could damage a nearby window or interior trim unless the latch plate is properly held. Hold the latch plate to ensure that the belt is taken up slowly.

Before closing the door, check that the retracted seat belt is taut. A slack belt could become trapped in the door or seat rail.

When the passenger's seat belt is fully taken up (or not pulled out), check that the stopper is holding the belt in a fully taut state.

Emergency Locking Retractor (ELR) Function

The three-point seat belts are provided with an Emergency Locking Retractor (ELR) function.

The ELR normally allows the seat belt to move in and out freely as the occupant moves. However, it locks the seat belt to restrain the occupant when a forward force resulting from a collision or sudden stop acts on the occupant.

The ELR also locks the seat belt when the belt is pulled out quickly. If this happens, allow it to retract once and then pull it out slowly.

Seats and Restraints 45

Seat Belt Use During Pregnancy

Warning

{

Unless the seat belt is correctly worn, it may dig into the abdomen in the event of hard braking or a collision, harming not only the expectant mother but also the unborn child, putting them both in danger of serious injuries or death.

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46 Seats and Restraints

An expectant mother or a person who is ill riding in the vehicle must also wear a seat belt. In light of the risk that the seat belt will apply pressure to the abdomen, chest and shoulders in the event of a collision, however, an expectant mother or person who is ill should get advice from a physician beforehand.

An expectant mother should use a three-point seat belt.

An expectant mother should position the lap belt snugly as low as possible on the hips (not across the abdomen). Also, she should fasten the shoulder belt so it rests on her chest, not on her abdomen.

Lap Belt

The center seat lap belt has no retractor, but should be positioned, worn, and released as described below.

To Fasten:

1. Sit on the seat in the correct position.

3. After checking that there are no twists in the belt, insert the latch plate into the buckle until it clicks.

2. Pull out the latch plate side of the belt a little longer than necessary. Placing the latch plate at right angles with the belt makes this easier.

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

4. Position the seat belt across the lap as low as possible on the hips. Pull the fold-back end of the belt (upper side) until the belt is adjusted to a snug fit.

To Unfasten:

Seat Belt Extender

If the vehicle's seat belt will fasten around you, you should use it. But if a seat belt isn't long enough to fasten, your dealer can order you an extender. When you go in to order it, take the heaviest coat you will wear, so the extender will be long enough for you. The extender will be just for you, and just for the seat in your vehicle that you choose. Do not let someone else use it, and use it only for the seat it is made to fit. To wear it, just attach it to the regular seat belt.

Safety System Check

Now and then check that the belts,

Push the button on the buckle to unfasten the belt.

The center seat belt (length-adjustable two-point belt) is designed so that it cannot be connected with any of the windowside seat belts (three-point seat belts with ELR).

buckles, latch plates, retractors, anchorages and guide loops work properly; look for loose parts or damage (without disassembly) that could keep the restraint system from doing its job. Have a belt assembly replaced if the webbing has been cut or otherwise damaged. Replace belts, retractors, and hardware used in all but a minor collision. Also, restraint systems should be

Seats and Restraints 47

replaced and anchorages properly repaired if they were in areas damaged by a collision, whether the belt was in use or not. If there is any question, replace the belt system. Damage, whether visible or not, could result in a serious personal injury in the event of an accident.

Seat Belt Care

Warning

{

Keep belts clean and dry.

Clean seat belts only with mild soaps and lukewarm water.

Do not bleach or dye belts since this may severely weaken them.

Seat belt webbing can lose its strength when bleached or redyed, or when cleaned using gasoline, paint thinners or other volatile substances.

Do not disassemble the seat belt mechanism in order to remove any foreign material or objects

(Continued)

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48 Seats and Restraints

Warning (Continued)

that may have entered the buckle. Instead, arrange for inspection and maintenance to be carried out by your dealer.

A dirty seat belt can develop retracting problems, and for this reason, regular inspection and upkeep are required.

Cleaning a Seat Belt Fold-Back Fitting Portion

1. Seat belt fold-back fitting portion

2. Seat belt

3. Cloth

Cleaning a Seat Belt Fold-Back Fitting Portion:

1. Fold a piece of cotton cloth, absorbent gauze, or the like of approximately 50 mm (2 in) in width into a rectangle.

2. Mix one part neutral detergent into approximately twenty parts warm water.

3. Wet the cloth in the detergent mixture, pass it through the fold-back fitting portion of the belt, and slide it back and forth and laterally until dirt can no longer be seen.

4. Remove the cloth, remove moisture from the fitting portion of the belt using a dry cloth, and then allow it to dry naturally out of direct sunlight.

5. Check to be sure the seat belt retracts and pulls out correctly.

Avoid using anything like a tool to pass the cloth through the fold-back fitting portion or try to remove stubborn dirt. Using such an object can result in damage to plastic parts or seat belt webbing.

Cleaning a Seat Belt Webbing

1. Brush

2. Seat belt

Cleaning a Belt Webbing:

1. Fully extract the belt and examine for any difference in color between the front and back surfaces.

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

2. Mix one part neutral detergent into approximately twenty parts warm water.

3. Wet a nail brush or another similar brush having soft bristles (of nylon or the like) in warm water, and use this to clean away dirt.

4. Wipe the seat belt dry using a dry cloth, and then allow it to dry naturally out of direct sunlight.

5. Check to be sure the seat belt retracts and pulls out correctly.

If the above-described upkeep operations do not improve the operation of the seat belt through the retractor, there is a possibility that the belt is making contact with the door pillar trim. In this case, arrange for inspection and maintenance to be carried out by your dealer.

If the belt is not winding and unwinding correctly, or if inspection reveals problems such as loose mountings, metal parts deformation, webbing damage, fraying or discoloration, arrange for replacement to be carried out by your dealer.

Seats and Restraints 49

Child Restraints

Child Restraint Systems

Warning

{

Children small enough for child restraints (as indicated on the label of such restraints), including booster seats, should always be transported in them. Children who have outgrown child restraint systems should wear seat belts. The lap belt should be snug and positioned low on the abdomen so that it is below the top of the hipbone. Otherwise, the belt could intrude into the child's abdomen during an accident and cause personal injury. When a child has grown enough so that the shoulder belt can be worn, a seating position with a shoulder belt should be chosen whenever possible.

(Continued)

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

50 Seats and Restraints

Warning (Continued)

Any unrestrained child could be injured by striking the vehicle's interior or by ejection from the vehicle during an accident or driving maneuver. Never allow a child to be held by another occupant instead of being properly restrained. If not properly restrained, the child could strike the vehicle interior or be crushed by the person holding the child, or by other occupants.

Be sure to follow all installation and use instructions that come with any child restraint system.

Child restraint systems are designed to be secured in vehicle seats either by the lap belt, or the lap portion of the lap-shoulder belt at that seating position. The child must also be secured within the restraint by the means provided by the child restraint manufacturer. If the child or

the child restraint is not properly secured, the child risks personal injury in the event of a collision.

Using a Lap Belt That Has No Retractor

When securing a child restraint with the center seat lap belt, pull the excess webbing through the belt's adjustment feature, then take these steps:

Once installed, push and pull the child restraint in all directions to be sure it is secure. If it comes loose, flip the end of the belt with the adjustment feature over before rebuckling.

If the child restraint is still not secure, use the outboard seating position in the vehicle and contact your dealer and the child restraint manufacturer for help.

Secure the child in the restraint in accordance with the child restraint manufacturer's instructions.

Installation on Outboard Seat

A seat belt locking clip is required for installation of a child restraint system on the outboard seat of this vehicle. A locking clip may usually be obtained where child restraints are sold, or by contacting your dealer for assistance. Make sure the locking clip is identical to the one shown on this page. Until you have the clip, use the child restraint system only in the center seat.

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

Warning

{

To help avoid personal injury or death during a collision or sudden maneuver, always thread both the lap and shoulder belt through the locking clip when securing a child restraint on the outboard seat. If the clip is not used or installed properly, the child restraint may move or tip over when your vehicle turns or stops abruptly.

Secure the child restraint with the lap belt portion (1) of the seat belt in accordance with the restraint manufacturer's instructions. Then thread both the lap (1) and shoulder belt (2) portions through the locking clip. Push and pull the child restraint in all directions to be sure it is secure.

Locking Clip Attached to Seat Belt

– Side View

1. Lap Belt

2. Shoulder Belt

3. Locking Clip

Seats and Restraints 51

When your child restraint is not installed, remove the locking clip to permit normal use of the lap-shoulder belt. Keep the locking clip in the glove box to help prevent its loss.

Child Restraint with Top Tether

Warning

{

We do not recommend using a child restraint that requires the use of a top tether. There is no appropriate place to attach a top tether anchor behind the seat in this vehicle.

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

52 Storage

Storage

Storage Compartments

Storage Compartments . . . . . . . . 52

Instrument Panel Storage . . . . . . 52

Glove Box . . . . . . . . . . . . . . . . . . . . . 53

Cupholders . . . . . . . . . . . . . . . . . . . . 54

Rear Storage . . . . . . . . . . . . . . . . . . 55

Additional Storage Features

Shopping Bag Hooks . . . . . . . . . . 55

Information on Loading the Vehicle

Information on Loading the

Vehicle . . . . . . . . . . . . . . . . . . . . . . . 56

Storage Compartments

Seat Back Pocket

Use the seat back pocket for storing items such as vehicle registration documents or owner manuals.

Instrument Panel Storage

Small Article Storage Pockets

Use the storage pockets for storing small articles.

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

Card Holder

Use this to hold your cards.

Glove Box

Press on the central mark to lock and unlock the lid.

Storage 53

Warning

{

For safety, close the glove box during driving. There is a risk of injury from the open lid or items stored in the glove box.

You and others could be seriously injured.

The glove box lid will automatically spring open when it is unlocked. Do not put your face or head near the lid.

Warning

{

Do not leave eyeglasses or a lighter in the vehicle. Lighters may explode and plastic lenses or frames may deform or crack if the interior temperature becomes very hot.

You and others could be seriously injured.

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54 Storage

Caution

When closing the glove box lid, do not allow stored items to pass the line shown in the illustration. The glove box lid may break if it is closed when items inside have passed the line and are sticking out from the box.

Do not place items such as vehicle registration documents or owner manuals in the glove box, but store them in the seat back pocket located on the back side of the driver seat.

Refer to Storage Compartments 0 52.

Cupholders

Pull the cupholder towards you to open it.

Do not place a cup that is too full in the cupholder. Spillages could cause damage to the radio and other electrical circuits. If there is a spill, wipe it up immediately with a dry cloth.

Do not tilt the cab with a filled cup in the cupholder. There may be a danger of the cupholder breaking if the weight on each holder exceeds

0.75 kg (1.65 lbs). Doing so may also result in damage to the radio or other electronic components.

Use the cupholders for storing small articles or cups.

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

Rear Storage

Single Cab Model Only

Warning

{

Storage 55

Additional Storage Features

Do not use the back panel tray to hold any object that may fly or fall out during vehicle operation. Doing so would be dangerous.

Items may fly or fall out when the cab is tilted.

You and others could be seriously injured.

The center area of the back panel tray can be used as a storage receptacle. The warning triangle and fire extinguisher can be carried in both sides.

Shopping Bag Hooks

This can be used to hold plastic shopping bags. Do not hang anything weighing over 3 kg (6.6 lbs) or the hook will break.

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

56 Storage

Information on Loading the Vehicle

Overloading

Warning

{

Overloading can result in loss of vehicle control and personal injury or death, either by causing component failures or by affecting vehicle handling. It can also shorten the service life of your vehicle.

The components of your truck are designed to provide satisfactory service if the vehicle is not loaded in excess of either the gross vehicle weight rating (GVWR) or the maximum front and rear gross axle weight ratings (GAWRs). These ratings are listed on the “Vehicle Certification and Greenhouse Gas (GHG) Emissions Plate”, which is located on the left side rear pillar panel below the striker (single cab) or on the left center pillar panel beside the shoulder seat belt anchor (crew cab).

Gross vehicle weight (GVW) is the weight of the originally equipped vehicle and all items added to it after it has left the factory. This would include bodies, lift gates, refrigeration systems, winches, booms, etc., the driver and all occupants, and the load the vehicle is carrying. The GVW must not exceed the GVWR. Also, gross weight on each of the front and rear axles must not exceed the front and rear GAWRs respectively.

Your dealer can advise you of the proper loading conditions for your vehicle. Using selected heavier suspension components for added durability may not increase any of the weight ratings shown on the “Vehicle Certification and Greenhouse Gas (GHG) Emissions Plate.”

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

Model Maximum

GVWR

kg (lb.)

3500 5 443 (12,000) 2 204 (4,860) 4 010 (8,840)

4500 6 577 (14,500) 3 007 (6,630) 4 482 (9,880)

Maximum Front and Rear Axle Weights

The weight of the cargo load must be properly distributed over both the front and rear axles. The “Vehicle Certification and Greenhouse Gas

Front GAWR

Capacity

kg (lb.)

(GHG) Emissions Plate” shows the maximum weight that the front axle can carry (front GAWR). It also shows the maximum weight that the rear axle can carry (rear GAWR). The GVWR is the maximum permissible loaded weight of the vehicle and takes into account the capabilities of the engine, transmission, frame, springs, brakes, axles and tires. Actual loads at the front and the rear axles can only be determined by weighing the vehicle. This can be done at highway weigh stations or other such places. See your dealer for help. The cargo load should be distributed on both sides of the center line as equally as possible.

Rear GAWR

Capacity

kg (lb.)

Storage 57

Tires

The tires on your truck must be of the proper size and properly inflated for the load that you are carrying. The “Vehicle Certification and Greenhouse Gas (GHG) Emissions Plate” shows the originally equipped tire size and recommended inflation pressures. The tire inflation tables show the load limits for various size tires at various inflation pressures.

For the vehicle plate location, see

Vehicle Identification Number (VIN)

0 292.

See “Tire Load and Inflation Table” under Tire Pressure 0 249.

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58 Storage

Load Cargo Correctly

Warning (Continued)

The weight of the payload must be limited within the gross vehicle weight (GVW) rating and distributed over the front and rear axles so as not to exceed the axle capacities.

It is extremely dangerous to overload the vehicle or to load the vehicle with the cargo positioned on one side. Load the vehicle correctly, observing the maximum

Warning

{

Overloading can result in a crash because it places too much strain on the wheel studs with the result that they break and the wheels come off.

(Continued)

loading capacity.

Incorrect loading can make the cargo unstable. It can also cause an overload condition confined to a small area, resulting in damage to the cargo bed and frame.

Overloading places undue strain on vehicle parts. It can shorten the vehicle's service life and cause a crash. You and others could be seriously injured.

(Continued)

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

Cargo loading caution Incorrect Correct

Do not place cargo only at the front or only at the rear. Distribute it evenly.

When using supports under cargo, position them uniformly along the cargo.

To the greatest extent possible, do not allow long cargo to protrude beyond the rear edge of the cargo bed. Rather, use supports to raise it at an angle. Avoid supporting it using just the front guard frame and the rear edge of the cargo bed.

Storage 59

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

60 Storage

Cargo loading caution Incorrect Correct

Use ropes and tarpaulins to secure the cargo so it does not fall off the cargo bed. Use rubber bands or bungee cords to prevent the tarpaulins from flapping in the wind.

Avoid loading cargo too high. It can cause the vehicle to tip sideways when it catches side winds and when turning the vehicle.

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

Loading Equipment

Do not load equipment from the rear of the cargo bed. The frame may become deformed when equipment is loaded from the rear of the cargo bed. In addition, the frame may become deformed even when loading equipment that has a weight under the maximum loading capacity.

When loading equipment, a device for securing the cargo bed is required. Use a car carrier or attach a rear support stand. If you have any questions, contact your dealer.

Make Sure There is No Flammable Material between the Cab and Cargo Bed

Caution

Be careful not to allow a sheet, canvas top, or the ends of ropes or rubber straps to touch or come close to the engine or exhaust pipe. During vehicle operation, the engine's heat could set them on fire. Carefully secure the sheet, canvas top, or the ends of ropes or rubber straps.

Storage 61

Do not Carry Fuel and Spray Cans in the Cab

Danger

{

It is extremely dangerous to carry fuel and spray cans in the cab. If such a container were to ignite or rupture, it could cause a fire or explosion. You and others could be seriously injured.

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62 Instruments and Controls

Instruments and Controls

Controls

Steering Wheel Adjustment . . . . 62

Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Windshield Wiper/Washer . . . . . . 63

Power Outlets . . . . . . . . . . . . . . . . . 65

Warning Lights, Gauges, and Indicators

Warning Lights, Gauges, and

Indicators . . . . . . . . . . . . . . . . . . . . 67

Instrument Cluster . . . . . . . . . . . . . 68

Speedometer . . . . . . . . . . . . . . . . . . 69

Odometer . . . . . . . . . . . . . . . . . . . . . . 69

Trip Odometer . . . . . . . . . . . . . . . . . 69

Tachometer . . . . . . . . . . . . . . . . . . . . 70

Fuel Gauge . .. . . . . . . . . . . . . . . . . . 70

Engine Coolant Temperature

Gauge . . . . . . . . .. . . . . . . . . . . . . . . 71

Seat Belt Reminders . . . . . . . . . . . 71

Battery Warning Light . .. . . . . . . . 72

Malfunction Indicator Lamp

(Check Engine Light) . . . . . . . . . 72

Service Vehicle Soon Light . . . . 73

Brake System Warning Light . . . 73

Antilock Brake System (ABS)

Warning Light . . . . . . . . . . . . . . . . 75

Engine Coolant Temperature

Warning Light . . . . . . . . . . . . . . . . 76

Engine Oil Pressure Light . . . . . . 76

Reduced Engine Power

Light . . . . . . . . . . . . . . . . . . . . . . . . . 77

High-Beam On Light . . . . . . . . . . . 77

Daytime Running Lamps (DRL)

Indicator Light . .. . . . . . . . . . . . . . 78

Cruise Control Light . . . . . . . . . . . 78

Vehicle Messages

Warning Buzzers . . . . . . . . . . . . . . 79

Controls

Steering Wheel Adjustment

Warning

{

Adjust the position of the steering wheel before you start driving.

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

3. Firmly lock the steering wheel at the selected position by moving the lock lever to the lock position.

Horn

The steering wheel is adjustable up and down as well as forward and backward.

Before adjusting, position the seat as desired.

1. Lift the lock lever toward you to unlock the steering column.

2. Sit in the correct driving position, and then move the steering wheel up and down and forward and backward to select the optimum steering wheel position.

To sound the horn, press the pad with a horn symbol on the steering wheel.

Instruments and Controls 63

Windshield Wiper/Washer

To use the windshield wiper and washer switches, the engine control switch must be in the ON position.

The windshield wiper switch has the following positions, which correspond to the states of the wiper.

9 : Stopped. 3 : Intermittent, light rain.

Low Speed : Low speed, moderate rain.

High Speed : High speed, heavy rain.

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

64 Instruments and Controls

If the wiper frequently stops during operation, contact your nearest Dealer.

Before operating the wiper, ensure that the wiper rubber is not stuck on to the windshield. If the wiper rubber is stuck to the windshield and you still operate the wiper, the wiper may break or the wiper motor may fail.

Clear ice or packed snow from the wiper blades before using the wipers. Carefully loosen or thaw wipers that are frozen to the windshield.

Do not operate the wiper on a dry windshield surface. Otherwise, the windshield surface may sustain damage.

Windshield Washer

Warning

{

At extremely low temperatures, washer fluid may freeze on the windshield after being sprayed,

(Continued)

Warning (Continued)

obstructing your forward view. In such a case, warm up the windshield before using the windshield washer.

Windshield washer fluid is sprayed over the windshield when this switch is pressed. At the same time, the windshield wiper operates.

To spray washer fluid on the windshield, push the button on the end of the combination switch lever. The spray will continue as long as you hold in the button.

If windshield washer fluid does not come out in sufficient quantity, immediately release the switch. Otherwise, the windshield surface may sustain damage.

If windshield washer fluid does not come out, release the windshield washer switch immediately. Otherwise the motor may seize up.

Do not hold the switch pressed for more than 30 seconds. Otherwise, the washer pump may sustain damage.

Check the washer fluid level regularly. Do it often when the weather is bad.

Use a good quality windshield antifreeze to help prevent freezing damage, and for better cleaning.

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

When the vehicle is used in a cold-climate region or during the winter:

Use washer fluid with appropriate concentration for the season to prevent frozen fluid.

Fill the washer fluid reservoir only 3/4 full to allow for expansion if the temperature should fall low enough to freeze the solution.

See Washer Fluid 0 207 for information on filling the windshield washer fluid reservoir.

Power Outlets

Warning

{

The maximum allowable load of the accessory power outlet is 120W (10A). If you subject the accessory power outlet to more than the allowable load, the wiring may overheat and cause a

(Continued)

Warning (Continued)

fire. Use the accessory power outlet within the allowable load.

The power source for the accessory power outlet is 12V. If electrical equipment other than 12V are connected, a malfunction due to overheating or fire may occur.

Be sure to insert the plug of the electrical appliance all the way into the accessory power outlet. Using an appliance when the plug is not completely inserted could cause abnormal heat generation and may result in the vehicle's fuses blowing.

Instruments and Controls 65

Warning

{

If foreign matter enters the accessory power outlet, or if water or drinks contact it, it could be damaged. Also, do not insert fingers or any metallic objects into the accessory power outlet.

As the internal part of the accessory power outlet may become deformed depending on the size of the plug used, do not attempt to force the plug into the accessory power outlet. In this case, replace the accessory power outlet.

Using the accessory power outlet for a long period of time while the engine is stopped will drain the battery.

When not in use, be sure to attach the cap.

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

66 Instruments and Controls

When inserting or removing the plug of an electrical appliance, turn the electrical appliance off or place the engine control switch in the "LOCK" position.

When using accessory power outlets, total maximum electrical load must not exceed 120W (10A). Always turn off any electrical equipment when not in use.

Type 1

The accessory power outlet can be used when the engine control switch is on or in ACC/ACCESSORY. Use the accessory power outlet to

supply power to commercially available vehicle accessories, etc. Remove the cap to use.

Type 2

You can plug in auxiliary electrical equipment. Just flip the outlet cover open from the left edge of the cover and follow the proper installation instructions that are included with any electrical equipment you install. These circuits are protected by a fuse and have maximum current loads.

When using accessory power outlets, total maximum electrical load must not exceed 120W. Always turn off any electrical equipment when not in use.

Leaving electrical equipment on for extended periods will drain your battery.

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

Warning Lights, Gauges, and Indicators

Warning lights and gauges can signal that something is wrong before it becomes serious enough to cause an expensive repair or replacement. Paying attention to the warning lights and gauges could prevent injury.

Some warning lights come on briefly when the engine is started to indicate they are working. When one of the warning lights comes on and stays on while driving, or when one of the gauges shows there may be a problem, check the section that explains what to do. Waiting to do repairs can be costly and even dangerous.

Instruments and Controls 67

For safety reasons, do not place packages, tools, or other items in the driver’s area that may restrict access to the controls or sight of the gauges.

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

68 Instruments and Controls

Instrument Cluster

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

Speedometer

The speedometer shows the vehicle's speed in either kilometers per hour (km/h) or miles per hour (mph).

Odometer

The odometer shows how far the vehicle has been driven, in either kilometers or miles.

Each time the reset knob is pressed with the engine control switch in the ON position, the odometer/trip meter shows ODO, TRIP A, and TRIP B in this sequence. With the key removed, the odometer and trip meter continue to indicate for about five minutes.

Odometer Check Switch

Press the Odometer Check switch to display the odometer and trip meter mileage after the key is turned off. The fuel gauge will also operate when this switch is pressed.

Trip Odometer

The trip odometer shows how far the vehicle has been driven since the trip odometer was last reset. Press the trip odometer reset stem next to the odometer to switch between the odometer and trip odometer.

To reset the trip odometer to zero, press and hold the trip odometer reset stem while TRIP A or TRIP B is displayed. The engine control switch should be in the ON position.

Instruments and Controls 69

When the battery is disconnected, TRIP A and TRIP B will be reset to zero. The per trip fuel economy is also reset by the TRIP B reset.

When you turn the engine control switch to the ON position, the odometer/trip odometer shows what was displayed the last time the engine control switch was turned to LOCK or ACC.

To set the odometer to display each time you turn the engine control switch to the ON position, turn the engine control switch to LOCK or ACC while the odometer is displayed. With the reset stem pressed, turn the engine control switch to the ON position and then within three seconds, turn the engine control switch back to the LOCK or ACC position. Follow the same procedure to cancel the setting.

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

70 Instruments and Controls

Tachometer

The tachometer displays the engine speed in revolutions per minute (rpm). The red zone indicates a range of dangerous engine speeds beyond permissable levels. Do not drive your vehicle with the needle in the red zone.

Caution

Exercise extreme care when shifting down on a steep downslope. The engine speed may exceed the critical speed, which can damage the vehicle.

Fuel Gauge

With the engine control switch in the ON position, the fuel gauge indicates about how much fuel is left in the tank.

To check the fuel level with the engine control switch in the LOCK position, press the Odometer Check switch.

Fill the tank well before it approaches empty. After filling up the fuel tank, it takes awhile for the fuel gauge needle to stabilize after the engine control switch is turned to the ON position. If the fuel tank is filled while the engine is off, but the engine control switch is in the ON position, the fuel gauge needle takes awhile to show the correct reading.

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

Instruments and Controls 71

Engine Coolant Temperature Gauge

If the engine coolant temperature gauge shows an overheat condition or you have any other reason to suspect the engine may be overheating, continued operation of the engine, even for a short time, may result in a fire and the risk of personal injury and severe vehicle damage. Take immediate action as outlined in Engine Overheating. See Engine Overheating 0 203.

With the engine control switch in the ON position, this gauge indicates the temperature of the engine coolant. “C” means cold while “H” means hot. If the engine overheats, the engine coolant temperature warning light comes on and a warning buzzer sounds. During operation, the needle should stay in the safety zone. See Engine Overheating 0 203 and

Engine Coolant Temperature Warning Light 0 76.

If the needle goes up above the upper limit and enters the H zone, the engine is likely to overheat. Immediately pull safely off the road out of the way of traffic and take the necessary actions to deal with engine overheating. If the needle nears the H zone but

{

Warning

Caution

(Continued)

Caution (Continued)

does not cross into it, this is not a problem, but check the engine coolant level in the reservoir. Add engine coolant as necessary.

Seat Belt Reminders

Seat Belt Warning Light

There is a driver seat belt reminder light on the instrument cluster.

This warning light comes on and a warning buzzer sounds when the driver is not wearing the seat belt while the engine control switch is in the ON position.

When the vehicle speed exceeds 20 km/h (12 mph) with the seat belt unbuckled, the warning light will flash and the buzzer will continue to

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

72 Instruments and Controls

sound. The warning light will go out and the warning buzzer will stop when the driver buckles the seat belt.

Battery Warning Light

This light comes on briefly when the ignition is turned on, but the engine is not running, as a check to show the light is working. It should go out when the engine is started.

If the light stays on, or comes on while driving, there may be a problem with the electrical charging system (such as a loose or broken fan belt). Pull off to a safe place well clear of traffic and contact your dealer. Driving while this light is on could drain the battery.

Check and Corrective Action

1. Check to see if the fan belt is broken or loose.

2. If the fan belt is loose, adjust the tension.

3. If the fan belt is broken or there is no abnormality in the fan belt, see your dealer for service.

See Battery - North America 0 212,

Jump Starting - North America 0 253, and Engine Drive Belt Routing 0 303.

Malfunction Indicator Lamp (Check Engine Light)

This light should come on to show that it is working when the engine control switch is turned to the ON position, and then should go out after the engine is started.

If this light stays on or comes on while the engine is running, it indicates a malfunction with the engine electronic emission control system. Avoid driving at high speeds and have the vehicle inspected by your dealer.

If this light comes on when the fuel tank is empty, you do not need to have your vehicle serviced.

If this light comes on intermittently or continuously while driving, service is required. Even if the vehicle is drivable and does not require towing, see your dealer as soon as possible. Continued driving without having the system serviced could cause damage to the emission control system. It could also affect fuel economy and drivability.

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

Service Vehicle Soon

Brake System Warning Light

Light

If the light remains on after engine

This light comes on briefly when the engine control switch is in the ON position, but the engine is not running, as a check to show the light is working. It should go out when the engine is started.

If the light stays on, or comes on while driving, the vehicle control system may be malfunctioning. Take the vehicle to your dealer for service as soon as possible.

Brake System Warning Light

This light should come on briefly when the engine control switch is turned to the ON position, and then should go out after the engine is started.

start up or comes on during operation of the vehicle, it means that there is something wrong with part of the brake system.

The brake system warning light comes on while the engine is running (after startup) in the following situations:

Drop in the level of brake fluid (due to brake lining wear or fluid leakage).

Abnormality in the charging system (such as an alternator malfunction or loose or split fan belt).

Abnormality in the anti-lock brake system (ABS) and EBD functions. (The ABS warning light and brake system warning

Instruments and Controls 73

light will illuminate at the same time.) See Antilock Brake

System (ABS) Warning Light

0 75.

To serve as a reminder, the light should stay on when the parking brake is not fully released, and the engine control switch is on. Have the system repaired if the light does not come on when it should. If this warning light does not go away, brake inspection and maintenance should be performed.

Check and Corrective Action

1. Check to see that the parking brake has been fully released. If it has, check the following:

2. Pull off the road and stop carefully. Remember that stopping distances may be longer, the pedal may be harder to push and go down farther than normal.

3. Check the brake fluid reservoir on the left side of the instrument panel. If low, add fluid as needed.

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

74 Instruments and Controls

4. If the brake fluid is not low: Try out the brakes by starting and stopping on the shoulder of the road, then either drive cautiously at a safe speed to the nearest dealer for repair, if you judge driving to be safe; or have the vehicle towed to the nearest dealer for repair. Continued driving without the necessary repairs could be dangerous.

If this warning light stays on, see your dealer.

The regular braking system is a split system designed so that one part will provide some braking if there is a loss of hydraulic pressure in the other part of the system.

Warning

{

If this warning light comes on while the engine is running, immediately stop the vehicle at a safe place well clear of traffic and contact your dealer for inspection.

(Continued)

Warning (Continued)

When the brake system warning light is illuminated, brake effectiveness may be decreased. When this happens, strongly press the brake pedal.

See Brakes 0 208.

Parking Brake Light

This indicator light comes on when the parking brake lever is pulled with the engine control switch on.

This light also stays on when the parking brake is not fully released and the engine control switch is on. If this warning light stays on, see your dealer.

The illumination of the parking brake light does not necessarily ensure firm application of the parking brake. The parking brake lever must be sufficiently pulled up and locked.

Be careful not to drive the vehicle with the parking brake lever still pulled up.

Brake Low Vacuum Warning Light

This light should come on briefly when the engine control switch is turned to the ON position, and then should go out after the engine is started. If the light does not come on when the engine control switch is turned to ON, it could indicate a burned out bulb or a blown fuse. Have the system repaired if the light does not come on during this check.

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

The warning light and buzzer will come on simultaneously when the brake booster’s vacuum or pressure becomes insufficient either during driving or when the engine control switch is in the ON position, or when there is an abnormality in the charging system, such as an alternator malfunction or loosening or splitting of the fan belt or whenever the hydraulic brake booster (HBB) becomes faulty. The warning buzzer will stop sounding when the parking brake is engaged.

On 4500, the brake low vacuum warning light and warning buzzer should come on to indicate low vacuum reserve for brake power assist. At the same time, the Back up Electric Vacuum Pump operates.

4500 models are equipped with a Back up Electric Vacuum Pump that will turn on if brake booster vacuum becomes insufficient.

If this happens while driving:

Do not pump the brakes. The system is designed to stop the truck with reserve power assist if

the pedal is held down. This reserve is greatly reduced each time you apply and release the brakes.

Stopping distance may be longer.

You may have to push much harder on the brake pedal.

Have the vehicle repaired before you continue driving.

The buzzer stops when the selector lever is shifted to the P position.

{

Do not drive while the buzzer sounds as the brakes are not operating to their full capacity. You and others could be seriously injured.

Warning

Instruments and Controls 75

Antilock Brake System (ABS) Warning Light

This light comes on briefly when the engine control switch is turned to the ON position, and then should go out after approximately three seconds. If the light does not come on, have it fixed so it will be ready to warn if there is a problem.

This warning light comes on together with the brake system warning light whenever there is a problem in the Anti-lock Brake System (ABS). In this case, the ABS stops working but the brakes still function as ordinary service brakes.

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76 Instruments and Controls

Warning

{

If this warning light comes on while driving, immediately stop your vehicle at a safe place well clear of traffic and take the following actions.

1. Stop the engine.

2. Restart the engine. Check if the ABS warning light comes on and then goes out. If it does, there is no problem. The ABS operates normally.

3. Move the vehicle slowly forward. Gradually increase the speed to 15 km/h (9 mph). If the light goes off, the ABS is normal.

If the light does not come on or go out, or comes on frequently, contact your dealer immediately and have the system repaired.

(Continued)

Warning (Continued)

Even if a problem has occurred in the ABS, the brakes will still work as normal brakes. In this case, the ABS has no influence on the operation of the brake system.

See Brake System Warning Light

0 73 and Antilock Brake System (ABS) 0 173.

Engine Coolant Temperature Warning Light

This light comes on briefly while starting the vehicle.

If it does not, have the vehicle serviced by your dealer. If the system is working normally the indicator light goes off.

Caution

The engine coolant temperature warning light indicates that the vehicle has overheated. Driving with this light on can damage the engine and it may not be covered by the vehicle warranty. See Engine Overheating 0 203.

The engine coolant temperature warning light comes on when the engine has overheated. If this happens, pull over and turn off the engine as soon as possible.

Engine Oil Pressure Light

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

This light should come on briefly when the engine control switch is turned to the ON position, and then should go out after the engine is started.

This light comes on when the engine oil pressure has fallen below the normal level while the engine is running or the oil pressure across the oil filter rises above the normal level while the engine is running.

If the warning light comes on while driving, immediately pull off to a safe place and stop the engine. Check the oil level in the engine crankcase. If the oil level is normal, restrictions are in the oil filter or within the lubricating system. Have the vehicle inspected at your dealer.

Do not run the engine with this light on. It could damage the engine. When this light comes on while driving, a warning tone also sounds.

The oil level varies while the engine is running right after it has stopped or if the vehicle is on uneven

ground. As a result, the red engine oil pressure warning light may light up.

When this warning light comes on, and the oil level is correct, the lubrication system may be faulty. See your dealer for service.

See Engine Oil 0 192.

Reduced Engine Power Light

This light comes on briefly when the engine control switch is turned to the ON position, and then should go out after the engine is started.

If this light comes on while the engine is running, this means the engine is overheating and in overheat protection mode. The overheat protection mode alternates firing groups of cylinders in order to

Instruments and Controls 77

prevent engine damage. In this mode, the engine loses power and performance. This operating mode allows your vehicle to be driven to a safe place in an emergency. Driving extended miles (km) and/or towing a trailer in the overheat protection mode should be avoided.

After driving in the overheated engine protection mode, allow the engine to cool before attempting any repair to avoid engine damage. The engine oil will be severely degraded. Repair the cause of coolant loss and change the oil. See Engine Overheating 0 203.

High-Beam On Light

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

78 Instruments and Controls

This light comes on when the high-beam headlamps are in use or the headlamps are cycled between high and low beams (passing signal).

See Headlamp High/Low-Beam Changer 0 81.

Daytime Running Lamps (DRL) Indicator Light

This light comes on when the DRL are on. If the vehicle is started during the daytime with the lighting switch off and the parking brake released, the low beam headlamps will come on at a reduced brightness. The light will go out when the lighting switch is turned on.

See Exterior Lamp Controls 0 80.

Cruise Control Light

This light should come on briefly when the engine control switch is turned to the ON position, and then should go out after the engine is started.

For vehicles with cruise control, this light comes on when cruise control is turned on.

This light should come on briefly when the engine control switch is turned to the ON position, and then should go out after the engine is started.

This light comes on when the vehicle enters the cruise control mode after the cruise control set switch is operated to set the vehicle speed.

For gasoline vehicles, the light will flash slowly when the high idle mode is active.

See Cruise Control 0 179.

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

Vehicle Messages

Warning Buzzers

A warning buzzer may not sound if there is a problem with the buzzer system. If this occurs, the system needs to be inspected. See your dealer.

A warning buzzer sounds under the following conditions:

Seat Belt— continuous beep. See Seat Belt Reminders 0 71.

Brake booster — continuous beep. See Brake System Warning Light 0 73.

Instruments and Controls 79

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

80 Lighting

Lighting

Exterior Lighting

Exterior Lamp Controls

Exterior Lighting

Exterior Lamp Controls . . . . . . . . 80

Headlamp High/Low-Beam

Changer . . . . . . . . . . . . . . . . . . . . . . 81

Flash-to-Pass . . . . . . . . . . . . . . . . . . 81

Hazard Warning Flashers . .. . . . 82

Turn and Lane-Change

Signals . . . . . . . . . . . . . . . . . . . . . . . 82

Cornering Lamps . . . . . . . . . . . . . . 83

Interior Lighting

Instrument Panel Illumination

Control . . . . . . . . . . . . . . . . . . . . . . . 83

Cargo Lamp . . . . . . . . . . . . . . . . . . . 84

Dome Lamps . . . . . . . . . . . . . . . . . . 84

Turning the light control switch to the following positions will cause the relevant lights to illuminate.

The light control switch can be used when the engine control switch is placed in the LOCK or ACC position. Do not operate the combination lights for an extended time period with the engine off. Otherwise, the battery may go dead, making it impossible to restart the engine.

9 : Turns off all exterior lights. ; : Turns on the parking lights

including all exterior lights, except the headlights.

2 : Turns on the headlights

together with the parking lights, sidemarker lights, roofmarker lights, taillights, license plate light, and instrument panel lights.

When you start the engine in daytime, with the lighting switch off, and release the parking brake, the daytime running lights will come on.

See Daytime Running Lamps (DRL)

Indicator Light 0 78 and Turn and Lane-Change Signals 0 82.

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

Lighting 81

Headlamp High/ Low-Beam Changer

With the headlights on, move the lever forward and backward to switch between the high beam and low beam.

Moving the lever forward selects high beam; moving the lever backward selects low beam.

While the headlights are on high beam, the headlights high beam indicator light on the instrument panel remains on.

This indicator light comes on when high beam is selected or the headlights are cycled between high and low beams.

Use low beam whenever there are vehicles ahead in the same lane or oncoming vehicles in the opposite lane.

See Bulb Replacement 0 219.

Flash-to-Pass

By lightly pulling the light control switch lever and releasing it, the high beam comes on and off. At the same time, the headlights high beam indicator light on the instrument panel comes on and off. Use this function as a signal for flash-to-pass a vehicle or other purposes.

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Hazard Warning Flashers

Use the hazard warning light flasher to warn other drivers any time your vehicle becomes a traffic hazard, day or night. With the engine control switch in any position or the key removed, when this switch is pressed, all of the turn signal lights and the turn signal indicator lights flash to signal an emergency. To turn off the hazard lights, press the switch again.

Do not leave the hazard warning light flasher operating for an extended time period with the engine off. Otherwise, the battery may go dead, making it impossible to restart the engine.

Both indicator lights flash when the hazard warning flasher switch is operated irrespective of the position of the engine control switch.

The individual turn signals do not work when the hazard flasher is turned on.

Turn and Lane-Change Signals

When turning left or right, move the lever up or down to flash the turn signal light.

When the turn is completed, the signal will cancel and the lever will return to horizontal.

If the steering wheel is only turned a small amount, turn off the signal manually. Lightly press and hold the lever up or down when overtaking or changing lanes. The turn signal light continues flashing as long as the

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

lever is held up or down. The lever moves back to neutral as soon as it is released.

A green light on the instrument panel is designed to flash to tell you that the front and rear turn signal lights are working. If the light stays on, but does not flash, check for a burned-out turn signal bulb. If the green light does not come on when you move the lever, check the fuse and indicator bulb.

Either of these indicator lights flashes when the turn signal switch is operated with the engine control switch in the ON position.

Cornering Lamps

The cornering light illuminates the area to which the vehicle is turning. With the headlights or marker lights on, the cornering lights come on in coordination with the turn signal lights.

See Exterior Lamp Controls 0 80 and Bulb Replacement 0 219.

Lighting 83

Interior Lighting

Instrument Panel Illumination Control

The control will change the light level of the instrument panel.

Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA- Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18

84 Lighting

Cargo Lamp

Dome Lamps

Front Light

Rear Light (Crew Cab Model Only)

When this switch is pressed, the rear body interior light comes on and the indicator light on the switch comes on.