Chevrolet Express 1999 5.0L VIN M SFI, Express Van 1999 V8 5.0L SFI Workshop Manual

chevrolet :: Chevy Truck Express 3/4 Ton Van V8­305 5.0L VIN M SFI (1999)

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Alarm Module, (Vehicle Antitheft) > Component Information > Locations > Component Locations

Alarm Module: Component Locations

Passlock Module

Below the center of the IP

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Alarm Module, (Vehicle Antitheft) > Component Information > Locations > Component Locations > Page 8

Passlock Module

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Alarm Module, (Vehicle Antitheft) > Component Information > Locations > Page 9

Passlock Module Connector

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Alarm Module, (Vehicle Antitheft) > Component Information > Service and Repair > Passlock Reprogramming Auto Learn Conditions

Alarm Module: Service and RepairPasslock Reprogramming Auto Learn Conditions
CONDITIONS

IMPORTANT VCM/PCM

: If a new Vehicle/powertrain Control Module () is being installed for the first the manufacturing enable bit will be setand the auto learn procedure may not be necessary.

The following procedure allows for anyone to reprogram the Passlock TM module learned data code with any tools, other than the scan tool, whenany of the following parts are replaced:^

The Passlock TM module
^ The passlock TM sensor
^ The VCM/PCM

The Passlock TM module will set the DTC B3031 module in the learn mode when entering the reprogramming procedure.

STEPS

IMPORTANT DTCs

: Erase the passlock TM related Diagnostic Trouble Codes () that are stored in the VCM/PCM. Record, then refer theseDTCs to:^

For 4.3L engines, refer to A Powertrain On Board Diagnostic (OBD) System Check in Engine Controls - 4.3L

^

For 5.0/5.7L engines, refer to A Powertrain On Board Diagnostic (OBD) System Check in Engine Controls - 5.0/5.7L

^

For 6.5L engines, refer to A Powertrain On Board Diagnostic (OBD) System Check in Engine Controls - 6.5L

^

For 7.4L engines, refer to A Powertrain On Board Diagnostic (OBD) System Check in Engine Controls - 7.4L

The following is the Auto Learn Procedure:1. Insure the ignition key is in the ON position.2. Insure all passlock TM module and VCM/PCM DTCs have been cleared.3. Momentarily rotate the ignition key to the CRANK position (Do NOT start the vehicle), then release it to the RUN position (Do NOT key OFF

in the process).

4. Wait . Observe the SECURITY indicator. Refer to the following list for the appropriate responses:10 minutes

^

If the passlock TM sensor was replaced the SECURITY indicator will flash for the duration.10 minutes

^

If the passlock TM module was replaced, the SECURITY indicator will flash for a few seconds and then remain ON for the remainder ofthe duration.10 minutes

^

If the VCM/PCM was replaced with a new programmed VCM/PCM and connected to the vehicle for the first time, the vehicle will Startand this procedure may not be necessary.

^

If the replacement VCM/PCM was connected to any vehicle at any other time, even momentarily, the SECURITY indicator will flash for afew seconds and then remain ON for the duration.10 minutes

PCM. The new password is learned on the next ignition lock cylinder cycle from OFF to CRANK to ON (start attempt).

10 minutes

10 seconds

5. The SECURITY indicator will transition from flashing to ON briefly to OFF after if remaining in the ignition ON position.6. Turn the ignition switch to the OFF position and wait for .7. Repeat steps 3-6 two more times. The new security code is ready to be communicated among the Passlock sensor, Passlock module and VCM/

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Alarm Module, (Vehicle Antitheft) > Component Information > Service and Repair > Passlock Reprogramming Auto Learn Conditions >

Page 12

Alarm Module: Service and RepairPasslock Reprogramming Seed and Key Disclaimer
DISCLAIMER

This step by step procedure is intended to augment the Passlock TM Diagnostic Repair Procedures. Sole reliance on this procedure may lead tounintended results.

EQUIPMENT

^ CD-ROM database containing the passlock seed and key algorithm loaded on a computer with class 2 capability
^ Scan Tool TECH 2 or a compatible scan tool

CONDITIONS

IMPORTANT

: If a new vehicle/powertrain control module (VCM/PCM) is being installed for the first time the manufacturing enable bit will beset and the auto learn procedure may not be necessary. The following procedure allows the relearning of the Passlock TM module or theVCM/PCM learned data code after the replacement of any of the following parts:^

The Passlock TM module
^ The passlock TM sensor
^ The VCM/PCM

The Passlock TM module will set the DTC B3031 module in the learn mode when entering the reprogramming procedure.

STEPS

IMPORTANT DTCs

: Erase the passlock TM related Diagnostic Trouble Codes () that are stored in the VCM/PCM. Record, then refer theseDTCs to:^

For 4.3L engines, refer to A Powertrain On Board Diagnostic (OBD) System Check in Engine Controls - 4.3L

^

For 5.0/5.7L engines, refer to A Powertrain On Board Diagnostic (OBD) System Check in Engine Controls - 5.0/5.7L

^

For 6.5L engines, refer to A Powertrain On Board Diagnostic (OBD) System Check in Engine Controls - 6.5L

^

For 7.4L engines, refer to A Powertrain On Board Diagnostic (OBD) System Check in Engine Controls - 7.4L

IMPORTANT

: In addition to the time involved in performing the specific steps, the Seed and Key procedure accomplishes the same task in as the Auto Learn procedure does in . Use either one of these two procedures.10minutes 30 minutes

10 minutes
The following is the Seed and Key Learn Procedure:1. Insure the ignition key is in the ON position.2. Insure all passlock TM module and VCM/PCM DTCs have been cleared.3. With scan tool (TECH 2) connected to the vehicle, select "Programming/Request Info" from menu, then follow instructions.4. Disconnect scan tool from vehicle and perform "Service Programming System/VTD Learn" with Techline terminal, then follow instructions.5. Reconnect scan tool to the vehicle.6. Follow instructions on the scan tool to perform the VTD password learn on the vehicle, this takes about .7. After , the SECURITY indicator will turn OFF. The new security code is ready to be communicated among the Passlock sensor,10 minutes

Passlock module and VCM/PCM. The new Password is learned on the next ignition lock cylinder cycle from OFF-to-CRANK-to-ON (startattempt).

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Alarm Module, (Vehicle Antitheft) > Component Information > Service and Repair > Passlock Reprogramming Auto Learn Conditions >

Page 13

Alarm Module: Service and RepairTheft Deterrent Module Bracket Replacement

REMOVAL PROCEDURE

1. Remove the Passlock TM control module.2. Remove the rivets (3) that retain the Passlock TM control module bracket to the instrument panel carrier (2).3. Remove the Passlock TM control module bracket (1) from the vehicle.

INSTALLATION PROCEDURE

1. Position the Passlock TM control module bracket (1) to the vehicle.2. Install the rivets (3) that retain the Passlock TM control module bracket to the instrument panel carrier.3. Install the Passlock TM control module.

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Alarm Module, (Vehicle Antitheft) > Component Information > Service and Repair > Passlock Reprogramming Auto Learn Conditions >

Page 14

Alarm Module: Service and RepairTheft Deterrent Module Replacement

(UA6)

REMOVAL PROCEDURE

1. Push the tab (3) at the rear of the passlock control module in order to release the module from the passlock control module bracket (4).2. Slide the passlock control module (2) out of the passlock control module bracket (4).3. Disconnect the electrical connector (5) from the passlock control module (2).4. Remove the passlock control module (2) from the vehicle.

INSTALLATION PROCEDURE

1. Install the passlock control module (2) to the vehicle.2. Connect the electrical connector (5) to the passlock control module (2).3. Slide the passlock control module (2) in to the passlock control module bracket (4).4. Push down on the passlock control module (2) in order to engage the retaining tab (3) on the passlock control module to the passlock module
bracket (4).

(Export)

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Alarm Module, (Vehicle Antitheft) > Component Information > Service and Repair >

Passlock Reprogramming Auto Learn Conditions > Page 15

Express 3/4 Ton Van V8-305 5.0L VIN M SFI (1999)

REMOVAL PROCEDURE

1. Remove the engine cover.2. Disconnect the electrical connector from the vehicle immobilizer module.3. Remove the plastic fastener retaining the vehicle immobilizer module to the sound insulation.4. Remove the vehicle immobilizer module from the vehicle.

INSTALLATION PROCEDURE

1. Install the vehicle immobilizer module to the vehicle.2. Install the plastic fastener in order to retain the vehicle immobilizer module to the sound insulation.3. Connect the electrical connector to the vehicle immobilizer module.4. Install the engine cover.

Programming Key Fob to VIM

5. Reprogram the key fob. Refer to . See: Testing and Inspection6. Inspect the system in order to ensure it is operating correctly.

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Emergency Contact Module > Component Information > Technical Service Bulletins > OnStar(R) - Analog Only Systems Information

Emergency Contact Module: Technical Service BulletinsOnStar(R) - Analog Only Systems Information

INFORMATION
Bulletin No.: 06-08-64-007A
Date: September 22, 2008

Subject: Information on OnStar(R) Analog-Only Systems

Models
Supercede:

This bulletin is being revised to update the models affected list above. Please discard Corporate Bulletin Number 06-08-46-007 (Section 08 - Body &Accessories).

Vehicles with this equipment will no longer be able to receive OnStar(R) services beginning January 1, 2008. At that time, service will be available onlythrough Dual-Mode (Analog / Digital) equipment. Analog-Only vehicles cannot be upgraded to digital equipment.

Disclaimer

All vehicles equipped with OnStar(R) listed in this bulletin were built with Analog-Only OnStar(R) Hardware. OnStar(R) equipped vehicles withanalog-only equipment were designed to operate only on the analog wireless network and cannot be upgraded for digital network compatibility.

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Emergency Contact Module > Component Information > Technical Service Bulletins > OnStar(R) - Analog Only Systems Information >

Page 20

Emergency Contact Module: Technical Service BulletinsOnStar(R) - Aftermarket Device Interference Information

INFORMATION
Bulletin No.: 08-08-46-004
Date: August 14, 2008

Subject: Information on Aftermarket Device Interference with OnStar(R) Diagnostic Services

Models:2009 and Prior GM Passenger Car and Truck (including Saturn)2009 and Prior HUMMER H2, H3 Models2009 and Prior Saab 9-7X
with OnStar(R) (RPO UE1)

This bulletin is being issued to provide dealer service personnel with information regarding aftermarket devices connected to the Diagnostic LinkConnector (DLC) and the impact to OnStar(R) diagnostic probes and Vehicle Diagnostic e-mails.

Certain aftermarket devices, when connected to the Diagnostic Link Connector, such as, but not limited to, Scan Tools, Trip Computers, Fuel EconomyAnalyzers and Insurance Tracking Devices, interfere with OnStar's ability to perform a diagnostic probe when requested (via a blue button call) by asubscriber. These devices also prohibit the ability to gather diagnostic and tire pressure data for a subscriber's scheduled OnStar(R) Vehicle Diagnostic(OVD) e-mail.

These aftermarket devices utilize the Vehicles serial data bus to perform data requests and/or information gathering. When these devices are requestingdata, OnStar(R) is designed not to interfere with any data request being made by these devices as required by OBD II regulations.

The OnStar(R) advisor is unable to definitively detect the presence of these devices and will only be able to inform the caller or requester of theunsuccessful or incomplete probe and may in some cases refer the subscriber/requester to take the vehicle to a dealer for diagnosis of the concern.

When performing a diagnostic check for an unsuccessful or incomplete OnStar(R) diagnostic probe, or for concerns regarding completeness of theOnStar(R) Vehicle Diagnostic (OVD) e-mail, verify that an aftermarket device was not present at the time of the requested probe. Regarding the OVDe-mail, if an aftermarket device is interfering (including a Scan Tool of any type), the e-mail will consistently display a "yellow" indication in diagnosticssection for all vehicle systems except the OnStar(R) System and Tire Pressure data (not available on all vehicles) will not be displayed (i.e. section iscollapsed). Successful diagnostic probes and complete OVD e-mails will resume following the removal or disconnecting of the off-board device.

Disclaimer

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Emergency Contact Module > Component Information > Technical Service Bulletins > OnStar(R) - Analog Only Systems Information >

Page 21

Emergency Contact Module: Technical Service BulletinsOnStar - Analog-Only Systems Information

Bulletin No.: 06-08-46-007
Date: December 13, 2006
INFORMATION

Subject:Information on OnStar(R) Analog-Only Systems

Models:1996-2001 GM Passenger Cars and Trucks

Plus:2002 Buick LeSabre, Rendezvous2002-2003 Buick Century, Regal2002-2005 Buick Park Avenue2002 Cadillac Eldorado, Escalade Models2002 Chevrolet Avalanche, Silverado, Suburban, Tahoe, Venture2002 GMC Denali, Denali XL, Jimmy, Sierra, Yukon, Yukon XL2002 Oldsmobile Intrigue, Silhouette2002-2003 Oldsmobile Aurora2002 Pontiac Aztek, Bonneville, Montana2002-2003 Pontiac Grand Prix
with OnStar(R) (RPO UE1)

All vehicles equipped with OnStar(R) listed in this bulletin were built with Analog-Only OnStar(R) Hardware. OnStar(R) equipped vehicles withanalog-only equipment were designed to operate only on the analog wireless network and cannot be upgraded for digital network compatibility.

Vehicles with this equipment will no longer be able to receive OnStar(R) services beginning January 1, 2008. At that time, service will be available onlythrough Dual-Mode (Analog/Digital) equipment. Analog-Only vehicles cannot be upgraded to digital equipment.

Disclaimer

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Relay Module > Component Information > Technical Service Bulletins > Customer Interest for Relay Module: > 09-06-03-004D > Dec > 10

> Electrical - MIL ON/DTC's Set By Various Control Modules

Relay Module: Customer InterestElectrical - MIL ON/DTC's Set By Various Control Modules
TECHNICAL

09-06-03-004DBulletin No.:

December 08, 2010Date:

Subject:

Intermittent No Crank/No Start, No Module Communication, MIL, Warning Lights, Vehicle Messages or DTCs Set by Various ControlModules - Diagnosing and Repairing Fretting Corrosion (Disconnect Affected Connector and Apply Dielectric Lubricant)

Models:

2011 and Prior GM Passenger Cars and Trucks

Attention:

This repair can be applied to ANY electrical connection including, but not limited to: lighting, body electrical, in-line connections, powertrain controlsensors, etc. DO NOT over apply lubricant to the point where it prevents the full engagement of sealed connectors. A light coating on the terminalsurfaces is sufficient to correct the condition.

Supercede:This bulletin is being revised to update the Attention statement and add the 2011 model year. Please discard Corporate Bulletin Number 09-06-03-004C(Section 06 - Engine/Propulsion System).

Condition

Some customers may comment on any of the following conditions:

- An intermittent no crank/no start

- Intermittent malfunction indicator lamp (MIL) illumination

- Intermittent service lamp illumination

- Intermittent service message(s) being displayed

The technician may determine that he is unable to duplicate the intermittent condition.

Cause

- Vibration

- Thermal cycling

- Poor connection/terminal retention

- Micro motion

- A connector, component or wiring harness not properly secured resulting in movement

On low current signal circuits this condition may cause high resistance, resulting in intermittent connections.
On high current power circuits this condition may cause permanent increases in the resistance and may cause a device to become inoperative.

Representative List of Control Modules and Components

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Relay Module > Component Information > Technical Service Bulletins > Customer

Interest for Relay Module: > 09-06-03-004D > Dec > 10 > Electrical - MIL ON/DTC's Set By Various Control Modules > Page 30

Express 3/4 Ton Van V8-305 5.0L VIN M SFI (1999)

This condition may be caused by a buildup of nonconductive insulating oxidized debris known as fretting corrosion, occurring between two electricalcontact surfaces of the connection or connector. This may be caused by any of the following conditions:

The following is only a representative list of control modules and components that may be affected by this connection or connector condition and include every possible module or component for every vehicle. DOESNOT

- Blower Control Module

- Body Control Module (BCM)

- Communication Interface Module (CIM)

- Cooling Fan Control Module

- Electronic Brake Control Module (EBCM)

- Electronic Brake and Traction Control Module (EBTCM)

- Electronic Suspension Control (ESC) Module

- Engine Control Module (ECM)

- Heating, Ventilation and Air Conditioning (HVAC) Control Module

- HVAC Actuator

- Inflatable Restraint Sensing and Diagnostic Module (SDM)

- Any AIR BAG module

- Seatbelt Lap Anchor Pretensioner

- Seatbelt Retractor Pretensioner

- An SIR system connection or connector condition resulting in the following DTCs being set: B0015, B0016, B0019, B0020, B0022, or B0023

- Powertrain Control Module (PCM)

- Remote Control Door Lock Receiver (RCDLR)

- Transmission Control Module (TCM)

Correction

replace the control module, wiring or component for the following conditions: ImportantDO NOT

-

be duplicated. The condition is intermittent and cannot

-

be duplicated. The condition is present and by disconnecting and reconnecting the connector the condition can no longer

Use the following procedure to correct the conditions listed above.

1. Install a scan tool and perform the Diagnostic System Check - Vehicle. Retrieve and record any existing history or current DTCs from all of the
control modules (refer to SI).

If any DTC(s) are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle to identify the connector(s) of the control module/component

which may be causing the condition (refer to SI).

If DTCs are not set, refer to Symptoms - Vehicle to identify the connector(s) of the control module/component which may be causing the

condition (refer to SI).

2. When identified, use the appropriate DTC Diagnostics, Symptoms, Schematics, Component Connector End Views and Component Locator
documents to locate and disconnect the affected harness connector(s) which are causing the condition.

ImportantDO NOT

apply an excessive amount of dielectric lubricant to the connectors as shown, as hydrolock may result when attempting to mate theconnectors. Use ONLY a clean nylon brush that is dedicated to the repair of the conditions in this bulletin.

3. With a one-inch nylon bristle brush, apply dielectric lubricant to both the module/component side and the harness side of the affected connector(s).

4. Reconnect the affected connector(s) and wipe away any excess lubricant that may be present. 5. Attempt to duplicate the condition by using the following information:

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Relay Module > Component Information > Technical Service Bulletins > Customer

Interest for Relay Module: > 09-06-03-004D > Dec > 10 > Electrical - MIL ON/DTC's Set By Various Control Modules > Page 31

Express 3/4 Ton Van V8-305 5.0L VIN M SFI (1999)

Note

Fretting corrosion looks like little dark smudges on electrical terminals and appear where the actual electrical contact is being made. In less severecases it may be unable to be seen or identified without the use of a magnifying glass.

- DTC Diagnostic Procedure

- Circuit/System Description

- Conditions for Running the DTC

- Conditions for Setting the DTC

- Diagnostic Aids

- Circuit/System Verification

If the condition cannot be duplicated, the repair is complete. If the condition can be duplicated, then follow the appropriate DTC, Symptom or Circuit/System Testing procedure (refer to SI).

Repair Order Documentation

be documented on the repair order. Failure to do so may result in a chargeback.ImportantThe following information MUST

- Customer vehicle condition.

- Was a Service Lamp or Service Message illuminated? If yes, specify which Service Lamp or Service Message.

- Was a DTC(s) set? If yes, specify which DTC(s) were set.

- After following the procedure contained within this bulletin, could the condition be duplicated?

If the condition duplicated, then document the affected module/component connector name and number on the repair order. was not

-

was

If the condition duplicated after the procedure contained within this bulletin was followed, and additional diagnosis led to the replacement ofa module or component, the SI Document ID Number be written on the repair order. MUST

Parts Information

Alternate Distributor For All of North America
Note

NyoGel(R) 760G Lubricant* is equivalent to GMSPO P/N 12377900, and P/N 10953529 (Canada), specified for use to correct the condition in thisbulletin.

*We believe this source and their products to be reliable. There may be additional manufacturers of such products/materials. General Motors does notendorse, indicate any preference for, or assume any responsibility for the products or material from this firm or for any such items that may be availablefrom other sources.

Warranty Information (excluding Saab Models)

For vehicles repaired under warranty, use the appropriate/closest labor operation depending upon the module/component connection that the dielectriclubricant was applied to:

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Relay Module > Component Information > Technical Service Bulletins > Customer

Interest for Relay Module: > 09-06-03-004D > Dec > 10 > Electrical - MIL ON/DTC's Set By Various Control Modules > Page 32

Express 3/4 Ton Van V8-305 5.0L VIN M SFI (1999)

Warranty Information (Saab Models)

For vehicles repaired under warranty, use the appropriate/closest labor operation depending upon the module/component connection that the dielectriclubricant was applied to refer to the table above.

Disclaimer

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Relay Module > Component Information > Technical Service Bulletins > All Technical Service Bulletins for Relay Module: > 09-06-03-

004D > Dec > 10 > Electrical - MIL ON/DTC's Set By Various Control Modules

Relay Module: All Technical Service BulletinsElectrical - MIL ON/DTC's Set By Various Control Modules
TECHNICAL

09-06-03-004DBulletin No.:

December 08, 2010Date:

Subject:

Intermittent No Crank/No Start, No Module Communication, MIL, Warning Lights, Vehicle Messages or DTCs Set by Various ControlModules - Diagnosing and Repairing Fretting Corrosion (Disconnect Affected Connector and Apply Dielectric Lubricant)

Models:

2011 and Prior GM Passenger Cars and Trucks

Attention:

This repair can be applied to ANY electrical connection including, but not limited to: lighting, body electrical, in-line connections, powertrain controlsensors, etc. DO NOT over apply lubricant to the point where it prevents the full engagement of sealed connectors. A light coating on the terminalsurfaces is sufficient to correct the condition.

Supercede:This bulletin is being revised to update the Attention statement and add the 2011 model year. Please discard Corporate Bulletin Number 09-06-03-004C(Section 06 - Engine/Propulsion System).

Condition

Some customers may comment on any of the following conditions:

- An intermittent no crank/no start

- Intermittent malfunction indicator lamp (MIL) illumination

- Intermittent service lamp illumination

- Intermittent service message(s) being displayed

The technician may determine that he is unable to duplicate the intermittent condition.

Cause

- Vibration

- Thermal cycling

- Poor connection/terminal retention

- Micro motion

- A connector, component or wiring harness not properly secured resulting in movement

On low current signal circuits this condition may cause high resistance, resulting in intermittent connections.
On high current power circuits this condition may cause permanent increases in the resistance and may cause a device to become inoperative.

Representative List of Control Modules and Components

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Relay Module > Component Information > Technical Service Bulletins > All Technical

Service Bulletins for Relay Module: > 09-06-03-004D > Dec > 10 > Electrical - MIL ON/DTC's Set By Various Control Modules > Page 38

Express 3/4 Ton Van V8-305 5.0L VIN M SFI (1999)

This condition may be caused by a buildup of nonconductive insulating oxidized debris known as fretting corrosion, occurring between two electricalcontact surfaces of the connection or connector. This may be caused by any of the following conditions:

The following is only a representative list of control modules and components that may be affected by this connection or connector condition and include every possible module or component for every vehicle. DOESNOT

- Blower Control Module

- Body Control Module (BCM)

- Communication Interface Module (CIM)

- Cooling Fan Control Module

- Electronic Brake Control Module (EBCM)

- Electronic Brake and Traction Control Module (EBTCM)

- Electronic Suspension Control (ESC) Module

- Engine Control Module (ECM)

- Heating, Ventilation and Air Conditioning (HVAC) Control Module

- HVAC Actuator

- Inflatable Restraint Sensing and Diagnostic Module (SDM)

- Any AIR BAG module

- Seatbelt Lap Anchor Pretensioner

- Seatbelt Retractor Pretensioner

- An SIR system connection or connector condition resulting in the following DTCs being set: B0015, B0016, B0019, B0020, B0022, or B0023

- Powertrain Control Module (PCM)

- Remote Control Door Lock Receiver (RCDLR)

- Transmission Control Module (TCM)

Correction

replace the control module, wiring or component for the following conditions: ImportantDO NOT

-

be duplicated. The condition is intermittent and cannot

-

be duplicated. The condition is present and by disconnecting and reconnecting the connector the condition can no longer

Use the following procedure to correct the conditions listed above.

1. Install a scan tool and perform the Diagnostic System Check - Vehicle. Retrieve and record any existing history or current DTCs from all of the
control modules (refer to SI).

If any DTC(s) are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle to identify the connector(s) of the control module/component

which may be causing the condition (refer to SI).

If DTCs are not set, refer to Symptoms - Vehicle to identify the connector(s) of the control module/component which may be causing the

condition (refer to SI).

2. When identified, use the appropriate DTC Diagnostics, Symptoms, Schematics, Component Connector End Views and Component Locator
documents to locate and disconnect the affected harness connector(s) which are causing the condition.

ImportantDO NOT

apply an excessive amount of dielectric lubricant to the connectors as shown, as hydrolock may result when attempting to mate theconnectors. Use ONLY a clean nylon brush that is dedicated to the repair of the conditions in this bulletin.

3. With a one-inch nylon bristle brush, apply dielectric lubricant to both the module/component side and the harness side of the affected connector(s).

4. Reconnect the affected connector(s) and wipe away any excess lubricant that may be present. 5. Attempt to duplicate the condition by using the following information:

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Relay Module > Component Information > Technical Service Bulletins > All Technical

Service Bulletins for Relay Module: > 09-06-03-004D > Dec > 10 > Electrical - MIL ON/DTC's Set By Various Control Modules > Page 39

Express 3/4 Ton Van V8-305 5.0L VIN M SFI (1999)

Note

Fretting corrosion looks like little dark smudges on electrical terminals and appear where the actual electrical contact is being made. In less severecases it may be unable to be seen or identified without the use of a magnifying glass.

- DTC Diagnostic Procedure

- Circuit/System Description

- Conditions for Running the DTC

- Conditions for Setting the DTC

- Diagnostic Aids

- Circuit/System Verification

If the condition cannot be duplicated, the repair is complete. If the condition can be duplicated, then follow the appropriate DTC, Symptom or Circuit/System Testing procedure (refer to SI).

Repair Order Documentation

be documented on the repair order. Failure to do so may result in a chargeback.ImportantThe following information MUST

- Customer vehicle condition.

- Was a Service Lamp or Service Message illuminated? If yes, specify which Service Lamp or Service Message.

- Was a DTC(s) set? If yes, specify which DTC(s) were set.

- After following the procedure contained within this bulletin, could the condition be duplicated?

If the condition duplicated, then document the affected module/component connector name and number on the repair order. was not

-

was

If the condition duplicated after the procedure contained within this bulletin was followed, and additional diagnosis led to the replacement ofa module or component, the SI Document ID Number be written on the repair order. MUST

Parts Information

Alternate Distributor For All of North America
Note

NyoGel(R) 760G Lubricant* is equivalent to GMSPO P/N 12377900, and P/N 10953529 (Canada), specified for use to correct the condition in thisbulletin.

*We believe this source and their products to be reliable. There may be additional manufacturers of such products/materials. General Motors does notendorse, indicate any preference for, or assume any responsibility for the products or material from this firm or for any such items that may be availablefrom other sources.

Warranty Information (excluding Saab Models)

For vehicles repaired under warranty, use the appropriate/closest labor operation depending upon the module/component connection that the dielectriclubricant was applied to:

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Relay Module > Component Information > Technical Service Bulletins > All Technical

Service Bulletins for Relay Module: > 09-06-03-004D > Dec > 10 > Electrical - MIL ON/DTC's Set By Various Control Modules > Page 40

Express 3/4 Ton Van V8-305 5.0L VIN M SFI (1999)

Warranty Information (Saab Models)

For vehicles repaired under warranty, use the appropriate/closest labor operation depending upon the module/component connection that the dielectriclubricant was applied to refer to the table above.

Disclaimer

> Relays and Modules > Relays and Modules - Body and Frame > Power Door Lock Control Module > Component Information > Locations

Power Door Lock Control Module: Locations

Front Crossbody Wiring (Left)

> Relays and Modules > Relays and Modules - Body and Frame > Power Door Lock Control Module > Component Information > Locations > Page 45

Express 3/4 Ton Van V8-305 5.0L VIN M SFI (1999)

Power Door Lock Control Module

In the left kick panel

> Relays and Modules > Relays and Modules - Body and Frame > Power Door Lock Control Module > Component Information > Locations > Page 46

Power Door Lock Control Module Connector

> Relays and Modules > Relays and Modules - Body and Frame > Power Door Lock Relay > Component Information > Locations

Power Door Lock Relay: Locations

> Relays and Modules > Relays and Modules - Body and Frame > Power Door Lock Relay > Component Information > Locations > Page 50

Express 3/4 Ton Van V8-305 5.0L VIN M SFI (1999)

Front Air Delivery Controls

Behind the IP, in the center of the bulkhead

> Relays and Modules > Relays and Modules - Body and Frame > Power Door Lock Relay > Component Information > Locations > Page 51

Power Door Lock Relay Connector

> Relays and Modules > Relays and Modules - Body and Frame > Power Sliding Door Module > Component Information > Service and Repair

Power Sliding Door Module: Service and Repair
REMOVAL PROCEDURE

1. Remove the sliding side door lower trim panel.2. Remove the lock rods from the sliding side door control assembly.

> Relays and Modules > Relays and Modules - Body and Frame > Power Sliding Door Module > Component Information > Service and Repair > Page 55

Express 3/4 Ton Van V8-305 5.0L VIN M SFI (1999)

3. Remove the bolts (4) that retain the sliding side door control assembly to the sliding side door.4. Remove the sliding side door control assembly (3) from the sliding side door.

5. Remove the sliding side door control assembly (3) from the vehicle.

INSTALLATION PROCEDURE

1. Install the sliding side door control assembly (3) to the vehicle.2. Install the sliding side door control assembly (3) to the sliding side door.

Refer to Fastener Notice in Service Precautions.NOTE:

3. Install the bolts (4) in order to retain the sliding side door control assembly (3) to the sliding side door.

Tighten the retaining bolts to Tighten 10 N.m (89 lb in).

> Relays and Modules > Relays and Modules - Body and Frame > Power Sliding Door Module > Component Information > Service and Repair > Page 56

Express 3/4 Ton Van V8-305 5.0L VIN M SFI (1999)

4. Install the lock rods to the sliding side door control assembly.5. Install the sliding side door lower trim panel.

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Electronic Brake Control Module > Component Information > Specifications

Electronic Brake Control Module: Specifications

EBCM Bracket Mounting Bolts ............................................................................................................................................................ 24 Nm (18 ft. lbs.)EBCM To BPMV ................................................................................................................................................................................ 5 Nm (39 inch lbs.)EHCU To Bracket ..................................................................................................................................................................................... 9 Nm (7 ft. lbs.)

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Electronic Brake Control Module > Component Information > Specifications > Page 61

Electronic Brake Control Module: Locations

Wheel Speed Sensor Wiring

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Electronic Brake Control Module > Component Information > Specifications > Page 62

Express 3/4 Ton Van V8-305 5.0L VIN M SFI (1999)

Locations View

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Electronic Brake Control Module > Component Information > Specifications > Page 63

Express 3/4 Ton Van V8-305 5.0L VIN M SFI (1999)

Fuel Pump Wiring

On the left frame rail, near the center of the vehicle

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Electronic Brake Control Module > Component Information > Diagrams > EBCM, Connector C1

Electronic Brake Control Module: DiagramsEBCM, Connector C1

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Electronic Brake Control Module > Component Information > Diagrams > EBCM, Connector C1 > Page 66

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Electronic Brake Control Module > Component Information > Diagrams > EBCM, Connector C1 > Page 67

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Electronic Brake Control Module > Component Information > Diagrams > Page 68

Electronic Brake Control Module: Service and Repair

REMOVAL PROCEDURE

IMPORTANT: (EBCM)

After installation, calibrate the new Electronic Brake Control Module to the tire size that is appropriate to the vehicle.Refer to Tire Size Calibration portion of ABS Description.

Refer to Battery Disconnect Caution in Service Precautions.CAUTION:

1. Negative Battery Cable.2. Raise vehicle and properly support.

(EHCU)

3. Remove the three Electro-Hydraulic Control Unit (1) shield bolts and shield.4. Disconnect the four electrical connectors from EBCM.

5. Remove the three bolts (1) that fasten the EHCU bracket to the frame.

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Electronic Brake Control Module > Component Information > Diagrams > Page 69

Express 3/4 Ton Van V8-305 5.0L VIN M SFI (1999)

6. Remove the EHCU from the frame allowing enough clearance to access the Electronic Brake Control Module Be careful not to bend the(EBCM).

brake pipes attached to the EHCU.

7. Remove the four T-25 Torx bolts (1) that fasten the EBCM to the BPMV.
Remove the EBCM (2) from the BPMV (4). Removal may require a light amount of force.

Do not use a tool to pry the EBCM or the BPMV. Excessive force will damage the EBCM.IMPORTANT:

8. Clean the BPMV with a clean, dry cloth.

INSTALLATION PROCEDURE

IMPORTANT: (EBCM)

If the Electronic Brake Control Module mounting bolts are corroded or damaged, do not reuse the old mounting bolts.Install new EBCM mounting bolts with the new EBCM.

Do not use RTV or any other type of sealant on the EBCM gasket or mating surfaces.IMPORTANT:

1. Install EBCM (2) to BPMV (4).

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Electronic Brake Control Module > Component Information > Diagrams > Page 70

Express 3/4 Ton Van V8-305 5.0L VIN M SFI (1999)

Refer to Fastener Notice in Service Precautions.NOTICE:

2. Install the four EBCM bolts (1).
^

Tighten the four bolts to in an X-pattern.5 Nm (39 inch lbs.)

3. Connect the four electrical connectors to the EBCM.4. Install the Electro-Hydraulic Control Unit Shield.(EHCU)

^

Tighten the three bolts to 12 Nm (8 ft. lbs.).

5. Lower the vehicle6. Connect the negative battery cable.7. Revise the tire calibration using the Scan Tool.8. Return to Diagnostic System Check. Refer to A Diagnostic System Check - ABS (Domestic) or A Diagnostic System Check - ABS (Export).

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Hydraulic Brake Booster Pump Module/Relay <--> [Hydraulic Brake Booster Pump Relay] > Component Information > Locations

Hydraulic Brake Booster Pump Module/Relay: Locations

Under the left side of the IP

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Hydraulic Brake Booster Pump Module/Relay <--> [Hydraulic Brake Booster Pump Relay] > Component Information > Locations > Page 74

Hydraulic Brake Booster Pump Module/Relay: Service and Repair
Alarm Module Replacement

REMOVAL PROCEDURE

Refer to Battery Disconnect Caution in Service Precautions.CAUTION:

1. Disconnect the negative battery cable.

2. Remove the retainers from the alarm or module.3. Disconnect the electrical connectors.4. Remove the alarm or module from the vehicle.

INSTALLATION PROCEDURE

1. Install the alarm or module to the vehicle.

2. Connect the electrical connectors.3. Install the retainers to the alarm or module.4. Connect the negative battery cable.

> Relays and Modules > Relays and Modules - Cooling System > Coolant Level Indicator Module > Component Information > Locations

Coolant Level Indicator Module: Locations

Under the IP, on the left side

> Relays and Modules > Relays and Modules - Cruise Control > Cruise Control Module > Component Information > Specifications

Cruise Control Module: Specifications

Cruise Control Module Bracket to the Cowl Retaining Nuts.......................................................................................................................... 5 N.m (44 lb in)Cruise Control Module to the Cruise Control Bracket Retaining Nuts........................................................................................................... 5 N.m (44 lb in)

> Relays and Modules > Relays and Modules - Cruise Control > Cruise Control Module > Component Information > Specifications > Page 83

Cruise Control Module: Locations

Location View

> Relays and Modules > Relays and Modules - Cruise Control > Cruise Control Module > Component Information > Specifications > Page 84

Express 3/4 Ton Van V8-305 5.0L VIN M SFI (1999)

Location Views

In the front of the engine compartment, near the left fender

> Relays and Modules > Relays and Modules - Cruise Control > Cruise Control Module > Component Information > Specifications > Page 85

Cruise Control Module Connector (Gas)

> Relays and Modules > Relays and Modules - Cruise Control > Cruise Control Module > Component Information > Specifications > Page 86

Cruise Control Module: Service and Repair

REMOVAL PROCEDURE

1. Raise and support the hood.2. Remove the air cleaner assembly from the vehicle. 3. Disconnect the electrical connector from the cruise control module.4. Disconnect the cruise control cable from the cruise control module. Refer Cruise Control Cable Replacement5. Remove the nuts (2) that retain the cruise control module to the cruise control bracket.6. Remove the cruise control module (3) from the cruise control bracket (1).7. Remove the cruise control module (3) from the vehicle.

INSTALLATION PROCEDURE

1. Install the cruise control module (3) to the vehicle.2. Install the cruise control module (3) to the cruise control bracket (1).

: Refer to in Cautions and Notices.NOTE Fastener Notice

3. Install the nuts (2) that retain the cruise control module (3) to the cruise control bracket (1).

Tighten the nuts to .Tighten 5 N.m (44 lb in)

4. Connect the cruise control cable to the cruise control module. Refer to . See: Cruise Control/Cruise ControlCruise Control Cable Replacement

Servo Cable/Service and Repair

5. Connect the electrical connector to the cruise control module.6. Install the air cleaner assembly to the vehicle.7. Close the hood.

> Relays and Modules > Relays and Modules - HVAC > Blower Motor Relay > Component Information > Locations > HVAC System - Manual

Blower Motor Relay: LocationsHVAC System - Manual

Auxiliary Blower Motor High, Low and Medium Speed Relay

Auxiliary Heater And A/C Wiring

In the left rear of the interior cabin, behind the rear wheel house

Blower Motor Resistor/Relay (Internal to Blower Motor)

> Relays and Modules > Relays and Modules - HVAC > Blower Motor Relay > Component Information > Locations > HVAC System - Manual > Page 92

Express 3/4 Ton Van V8-305 5.0L VIN M SFI (1999)

Underhood Lamp, Underhood Reel Lamp, Blower Motor, Blower Motor Resistor/Relay

At the HVAC control panel

> Relays and Modules > Relays and Modules - HVAC > Blower Motor Relay > Component Information > Locations > HVAC System - Manual > Page 93

Underhood Lamp, Underhood Lamp, Blower Motor, Blower Motor Resistor/Relay

> Relays and Modules > Relays and Modules - HVAC > Blower Motor Relay > Component Information > Diagrams > Auxiliary Blower Motor Relay, Low/Medium/High Connector

Auxiliary Blower Motor Relay, Low/Medium/High Connectors