GENERAL MOTORS, GM, the GM Emblem, GMC,
the GMC Truck Emblem, and the name SIERRA
are registered trademarks of General Motors.
This manual describes features that may or may not
be on your specific vehicle either because they are
options that you did not purchase or due to changes
subsequent to the printing of this owner manual. Please
refer to the purchase documentation relating to your
specific vehicle to confirm each of the features found
on your vehicle. For vehicles first sold in Canada,
substitute the name “General Motors of Canada
Limited” for GMC Division wherever it appears in this
manual.
®
If the vehicle has the DURAMAX
to the DURAMAX
specific information on this engine.
Keep this manual in the vehicle for quick reference.
®
Diesel supplement for additional and
Diesel engine, refer
Canadian Owners
Propriétaires Canadiens
A French language copy of this manual can be obtained
from your dealer or from:
On peut obtenir un exemplaire de ce guide en français
auprès du concessionnaire ou à l'adresse suivante:
Helm, Incorporated
P.O. Box 07130
Detroit, MI 48207
1-800-551-4123
Numéro de poste 6438 de langue française
www.helminc.com
Index
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.
Litho in U.S.A.
Part No. 25854759 B Second Printing
Warning messages found on vehicle labels and in this
manual describe hazards and what to do to avoid or
reduce them.
Danger indicates a hazard with a high level of risk
which will result in serious injury or death.
Warning or Caution indicates a hazard that could result
in injury or death.
WARNING:
{
These mean there is something that could hurt
you or other people.
Notice: This means there is something that could
result in property or vehicle damage. This would not
be covered by the vehicle's warranty.
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.”
Vehicle Symbols
The vehicle has components and labels that use
symbols instead of text. Symbols are shown along with
the text describing the operation or information relating
to a specific component, control, message, gauge,
or indicator.
M : This symbol is shown when you need to see your
owner manual for additional instructions or information.
* : This symbol is shown when you need to see a
service manual for additional instructions or information.
iv
Vehicle Symbol Chart
Here are some additional symbols that may be found on
the vehicle and what they mean. For more information
on the symbol, refer to the index.
0 : Adjustable Pedals9 : Airbag Readiness Light# : Air Conditioning
! : Antilock Brake System (ABS)g : Audio Steering Wheel Controls or OnStar
®
$ : Brake System Warning Light
" : Charging System
This section provides a brief overview about some of
the important features that may or may not be on your
specific vehicle.
For more detailed information, refer to each of the
features which can be found later in this owner manual.
Remote Keyless Entry (RKE) System
The RKE transmitter is used to remotely lock and
unlock the doors from up to 60 m (195 feet) away from
the vehicle.
Press K to unlock
the driver door.
Press
K again within
three seconds to unlock
all remaining doors.
Q to lock all doors.
Press
Lock and unlock feedback can be personalized.
L and release to locate the vehicle.
Press
Press
L and hold for more than two seconds to sound
the panic alarm.
L again to cancel the panic alarm.
Press
See Keys
(RKE) System Operation on page 3‑5.
on page 3‑3
and Remote Keyless Entry
Remote Vehicle Start
With this feature the engine can be started from outside
of the vehicle.
Starting the Vehicle
1. Aim the RKE transmitter at the vehicle.
2. Press
3. Immediately after completing Step 2, press and
When the vehicle starts, the parking lamps will turn on
and remain on as long as the engine is running. The
doors will be locked and the climate control system may
come on.
Q.
hold
/ until the turn signal lamps flash.
1-6
The engine will continue to run for 10 minutes. Repeat
the steps for a 10-minute time extension. Remote start
can be extended only once.
Canceling a Remote Start
To cancel a remote start:
.
Aim the RKE transmitter at the vehicle and press
and hold
.
Turn on the hazard warning flashers.
.
Turn the ignition on and then back off.
See Remote Vehicle Start on page 3‑7.
/ until the parking lamps turn off.
Power Door Locks
If available, these switches are located on the front
doors.
K : Press to unlock the doors.Q : Remove the key from the ignition and press to lock
the doors.
For more information, see:
.
Programmable Automatic Door Locks
page 3‑11
.
Rear Door Security Locks on page 3‑12.
.
on
Door Locks
There are several ways to lock and unlock the vehicle.
From outside, use the Remote Keyless Entry (RKE)
transmitter or the key in the driver door. From inside,
use the power door locks or the manual door locks.
To lock or unlock the door with the manual locks, push
down or pull up on the manual lock knob.
Windows
Turn the hand crank on each door to manually raise or
lower the manual windows.
1-7
Power Windows
If available, the power
window switches are
located on each of the
side doors in the front and
rear, if equipped.
Power Sliding Rear Window
On vehicles with a power
sliding rear window, the
switch is located in the
overhead console.
Crew Cab Shown
The driver door has a switch for the passenger window
and rear windows as well.
Press the switch to lower the window. Pull the switch up
to raise it.
For more information, see:
.
Windows on page 3‑16.
.
Power Windows on page 3‑17.
1-8
The power sliding rear window cannot be operated
manually. Push or pull the switch to open or close the
window.
Seat Adjustment
Front Seats
Manual Seats
If the vehicle has a manual seat, it can be moved
forward or rearward.
1. Lift the bar to unlock
the seat.
2. Slide the seat to the
desired position and
release the bar.
Try to move the seat with your body to be sure the seat
is locked in place.
See Manual Seats on page 2‑4.
Power Seats
If equipped, the power seat controls are located on the
outboard side of the front seats.
Move the seat forward or rearward by sliding the control
forward or rearward.
Raise or lower the front or rear part of the cushion by
moving the front or rear part of the control up or down.
Raise or lower the entire seat by moving the entire
control up or down.
See Power Seats on page 2‑5.
1-9
Manual Lumbar
If equipped, this control is
located on the outboard
side of the seat.
Increase or decrease lumbar support by turning the
knob forward or rearward.
Power Lumbar
If equipped, this control is located on the outboard side
of the seat.
On vehicles with two-way lumbar, press and hold the
top of the control to increase lumbar support. To
decrease, press and hold the bottom of the control.
On vehicles with four-way lumbar, press and hold the
front of the control to increase lumbar support. To
decrease, press and hold the rear of the control. To
raise the height of the support, press and hold the top of
the control. To lower, press and hold the bottom of the
control. See Power Lumbar on page 2‑7.
1-10
Manual Reclining Seatbacks
Power Reclining Seatbacks
If equipped, this control is located on the outboard side
of the seat.
To recline the seatback:
1. Lift the recline lever.
2. Move the seatback to the desired position, then
release the lever to lock the seatback in place.
3. Push and pull on the seatback to make sure it is
locked.
See Reclining Seatbacks on page 2‑10.
If available, this control is located on the outboard side
of the seat.
To recline the seatback, tilt the top of the control
rearward.
To bring the seatback forward, tilt the top of the control
forward.
See Reclining Seatbacks on page 2‑10.
1-11
Memory Features
This vehicle may have the memory package.
The controls for this
feature are located on the
driver door, and are used
to program and recall
memory settings for the
driver seat, outside
mirrors, and the
adjustable throttle and
brake pedal feature.
For more information, see Memory Seat, Mirrors, andPedals on page 2‑8.
Heated Seats
On vehicles with heated front seats, the controls are
located on the driver and passenger doors.
I : Press to heat the seatback only.
J : Press to heat the seat and seatback.
The light on the button will come on to indicate that the
feature is working. Press the button to cycle through the
temperature settings of high, medium, and low and to
turn the heat to the seat off. Indicator lights will show
the level of heat selected: three for high, two for
medium, and one for low.
See Heated Seats on page 2‑8.
Head Restraint Adjustment
Do not drive until the head restraints for all occupants
are installed and adjusted properly.
For more information see Head Restraints
page 2‑3
.
on
1-12
Safety Belt
Refer to the following sections for important information
on how to use safety belts properly.
.
Safety Belts: They Are for Everyone on page 2‑16.
.
How to Wear Safety Belts Properly on page 2‑21.
.
Lap-Shoulder Belt on page 2‑30.
.
Lower Anchors and Tethers for Children (LATCH)
on page 2‑49
.
Sensing System for Passenger
Airbag
The passenger sensing system, if equipped, turns off
the right front passenger frontal airbag under certain
conditions. The driver airbags, seat‐mounted side
impact airbags and roof‐rail airbags are not affected
by this.
If the vehicle has one of the indicators pictured in the
following illustrations, then the vehicle has a passenger
sensing system for the right front passenger position
unless there is an airbag off switch located in the
glove box.
If there is an airbag off switch, the vehicle does not
have a passenger sensing system. See Airbag Off
Switch
on page 2‑83
for more information.
1-13
The passenger airbag status indicator will be
visible on the overhead console when the vehicle
is started.
United StatesCanada
Mirror Adjustment
Exterior Mirrors
Vehicles with outside
power mirrors and
foldaway mirrors have
controls located on the
driver door.
See Passenger Sensing System
important information.
1-14
on page 2‑86
for
1. Press (A) or (B) to select the driver or passenger
side mirror.
2. Press one of the four arrows located on the control
pad to adjust the mirror.
3. Press either (A) or (B) again to deselect the mirror.
Power Foldaway Mirrors
To fold the mirrors:
1. Press (C) to fold the mirrors out to the driving
position.
2. Press (D) to fold the mirrors in to the folded
position.
Vehicles with manual outside mirrors can be adjusted
for a clearer view.
If the vehicle has towing mirrors, they can be adjusted
for a clearer view of the objects behind you. Manually
pull out the mirror head to extend it for better visibility
when towing a trailer. See Outside Towing Mirrors
page 3‑61
.
on
Manual Foldaway Mirrors
Manually fold the mirrors inward to prevent damage
when going through an automatic car wash. To fold,
push the mirror toward the vehicle. Push the mirror
outward, to return to its original position.
Interior Mirror
Vehicles with a manual rearview mirror can be adjusted
to see clearly behind the vehicle. Hold the mirror in the
center to move it up or down and side to side. To
reduce headlamp glare during nighttime use, push the
tab forward for daytime use and pull it for nighttime use.
Vehicles with the automatic dimming feature will
automatically reduce the glare of lights from behind the
vehicle. The dimming feature comes on and the
indicator light illuminates each time the vehicle is
started.
See Automatic Dimming Rearview Mirror
for more information.
on page 3‑60
1-15
Steering Wheel Adjustment
Throttle and Brake Pedal Adjustment
On vehicles with this feature, you can change the
position of the throttle and brake pedals.
The tilt lever is located on the lower left side of the
steering column.
To adjust the steering wheel:
1. Hold the steering wheel and pull the lever.
2. Move the steering wheel to a comfortable position.
3. Release the lever to lock the wheel in place.
See Tilt Wheel on page 4‑3.
1-16
The switch used to adjust the pedals is located on the
instrument panel below the climate control system.
Press the arrow at the bottom of the switch to move the
pedals closer to your body. Press the arrow at the top of
the switch to move the pedals away from your body.
See Adjustable Throttle and Brake Pedal on page 3‑28.
Interior Lighting
Dome Lamps
The dome lamps come on when any door is opened.
They turn off after all the doors are closed.
The dome lamps can also be turned on by turning the
instrument panel brightness knob, located on the
instrument panel to the left of the steering column,
clockwise to the farthest position. In this position, the
dome lamps remain on whether a door is opened or
closed.
k : The dome lamp override button is located next to
the exterior lamps control.
Press the button in and the dome lamps remain off
when a door is opened. Press the button again to return
it to the extended position so that the dome lamps come
on when a door is opened.
Reading Lamps
For vehicles with reading lamps in the overhead
console, press the button located next to the lamp to
turn it on or off.
The vehicle may also have reading lamps in other
locations. The lamps cannot be adjusted.
For more information about interior lamps, see:
.
Dome Lamps on page 4‑15.
.
Reading Lamps on page 4‑16.
.
Instrument Panel Brightness on page 4‑15.
Exterior Lighting
The exterior lamps
control is located on the
instrument panel to the
left of the steering wheel.
1-17
O : Turns off the automatic headlamps and daytime
running lamps (DRL). Turn the headlamp control to the
off position again to turn the automatic headlamps or
DRL back on.
For vehicles first sold in Canada, the off position will
only work when the vehicle is shifted into P (Park).
AUTO: Automatically turns on the headlamps, parking
lamps, taillamps, instrument panel lights, and license
plate lamps.
;: Turns on the parking lamps, taillamps, instrument
panel lights, and license plate lamps.
2: Turns on the headlamps, parking lamps, taillamps,
instrument panel lights, and license plate lamps.
For more information, see:
.
Exterior Lamps on page 4‑10.
.
Daytime Running Lamps (DRL) on page 4‑12.
.
Fog Lamps on page 4‑14.
Windshield Wiper/Washer
8 : Single wipe, turn to 8, then release. Several
wipes, hold the band on
9 : Turns the windshield wipers off.6 : Turn the band up for more frequent wipes or down
for less frequent wipes.
6 : Slow wipes.? : Fast wipes.L (Washer Fluid): Push the paddle at the top of the
lever to spray washer fluid on the windshield.
See Windshield WipersWasher on page 4‑7.
8 longer.
on page 4‑6
and Windshield
1-18
Climate Controls
These systems control the heating, cooling, and
ventilation.
Climate Control System (With Air
Conditioning)
Climate Control System (With Heater Only)
A. Fan Control
B. Temperature Control
C. Air Delivery Mode Control
A. Fan Control
B. Temperature Control
C. Air Delivery Mode
Control
D. Air Conditioning
E. Outside Air
F. Air Recirculation
G. Rear Window Defogger
1-19
Dual Automatic Climate Control System
Transmission
Range Selection Mode
A. Driver and Passenger
Temperature Controls
B. Fan Control
C. AUTO
D. Defrost
E. Air Recirculation
F. Outside Air
See Climate Control System (With Heater Only)
page 4‑19
Conditioning)
Climate Control System on page 4‑23.
1-20
or Climate Control System (With Air
on page 4‑20
G. Air Delivery Mode
Control
H. Display
I. Power Button
J. Rear Window
Defogger
K. Air Conditioning
L. PASS (Passenger)
and Dual Automatic
on
The Range Selection Mode switch is located on the
shift lever. To enable the Range Selection feature, move
the column shift lever to the M (Manual) position. The
current range will appear next to the M. This is the
highest attainable range with all lower gears accessible.
As an example, when 4 (Fourth) gear is selected,
1 (First) through 4 (Fourth) gears are available.
Press the plus/minus buttons, located on the steering
column shift lever, to select the desired range of
gears for current driving conditions. See AutomaticTransmission Operation on page 3‑30.
While using Range Selection Mode, cruise control and
the Tow/Haul mode can be used.
Grade Braking is not available when Range Selection
Mode is active. See Tow/Haul Mode on page 3‑36.
Four-Wheel Drive
If the vehicle has Four-Wheel Drive, you can send the
engine's driving power to all four wheels for extra
traction.
Transfer Case Buttons
The vehicle will have one of these three styles of
transfer case controls. Use these controls to shift into
and out of the different Four-Wheel Drive modes.
Manual Transfer Case
This transfer case shift lever is on the floor to the right
of the driver.
1-21
Electronic Transfer Case
Automatic Transfer Case
This transfer case knob is located next to the steering
column.
1-22
This transfer case knob is located next to the steering
column.
Each transfer case design offers different drive options.
The list below described the different drive options that
may be available.
m (Two-Wheel-Drive High): This setting is used for
2
driving in most street and highway situations.
AUTO (Automatic Four-Wheel Drive): This setting is
ideal for use when road surface traction conditions are
variable.
4
m (Four-Wheel High): Use the Four-Wheel-Drive High
position when extra traction is needed, such as on
snowy or icy roads or in most off-road situations.
N (Neutral): Shift the transfer case to Neutral only when
towing the vehicle. See Recreational Vehicle Towing
page 5‑49
n (Four-Wheel-Drive Low): This setting sends
4
maximum power to all four wheels. You might choose
Four-Wheel-Drive Low if you are driving off-road in
deep sand, deep mud, deep snow, and while climbing
or descending steep hills.
See Four-Wheel Drive on page 3‑39.
or Towing a Trailer on page 5‑55.
on
Vehicle Features
Radio(s)
Radio with CD, DVD, and USB Port
O : Press to turn the system on and off. Turn to
increase or decrease the volume.
BAND: Press to choose between FM, AM, or XM™,
if equipped.
the current FM-RDS or XM station; or CD, MP3 or WMA
song. If information is available during XM, CD, MP3 or
WMA playback, the song title information displays on
the top line of the display and artist information displays
on the bottom line. When information is not available,
“NO INFO” displays.
For more information about these and other radio
features, see Radio(s) on page 4‑88.
For vehicles with a Rear Seat Entertainment System
(RSE) and Rear Seat Audio System (RSA) see, Rear
Seat Entertainment (RSE) System
Rear Seat Audio (RSA)
information.
on page 4‑145
on page 4‑136
for more
and
Storing a Favorite Station
A maximum of 36 stations can be stored as favorites
using the six softkeys located below the radio station
frequency tabs and by using the radio FAV button.
Press FAV to go through up to six pages of favorites,
each having six favorite stations available per page.
Each page of favorites can contain any combination of
AM, FM, or XM stations.
For more information, see Radio(s) on page 4‑88.
Setting the Clock
To set the time and date for the radio with CD, DVD,
and USB Port:
1. Turn the ignition key to ACC/ACCESSORY or
ON/RUN, then press
2. Press
3. Press the softkey located under any one of the
4. To increase or decrease the time or date, turn
For detailed instructions on setting the clock for the
vehicle's specific audio system, see Setting the Clock
on page 4‑86
H to display HR, MIN, MM, DD, YYYY
(hour, minute, month, day, and year).
labels to be changed.
clockwise or counter‐clockwise.
.
O, to turn the radio on.
f
1-24
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