Chevrolet Silverado / GMC Sierra. Service manual — part 662

SIR Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

SIR System Description and Operation

Electrical Information Reference

Circuit Testing

Connector Repairs

Testing for Intermittent Conditions and Poor Connections

Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

1. Ignition ON, verify no PPS DTCs are set in the PPS or SDM.

If any PPS DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle .

2. Verify DTC B1000, B1001, or U0170 is not set as current.

IMPORTANT:

A DTC B0081 set in history may not clear until the PPS
module enters the sleep mode.

When removing connectors inspect for damage,
corrosion or poor connection. Damage or corrosion in
the following requires repair or replacement of the
affected component/connector.

The PPS module

The SDM module

The PPS module harness connector

The SDM wiring harness connector

2008 Chevrolet Silverado 1500

2008 RESTRAINTS Supplemental Inflatable Restraints - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado

If any of the DTCs are set as current, refer to Diagnostic Trouble Code (DTC) List -
Vehicle .

3. Verify DTC B0081 3A is not set as current.

If DTC B0081 3A is set as current, replace the PPS with the correct part number.

4. Verify DTC B0081 39 is not set as current.

If DTC B0081 39 is set as current, replace the PPS.

5. Verfiy DTC B0081 71 or B0081 0F is not set.

If DTC B0081 71 or B0081 0F is set, clear the DTCs. No other repairs are necessary.

Clearing DTC B0081

1. To enter the sleep mode, remove the scan tool, turn the ignition OFF, and open and close

the driver door.

2. Ignition OFF and all doors closed, wait 30 seconds.

3. With a scan tool, clear DTC B0081. The DTC should clear.

Repair Procedures

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

SIR/SRS Wiring Repairs

Control Module References for PPS replacement, setup, and programming

DTC B0083-B0088

Diagnostic Instructions

Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

Review Strategy Based Diagnosis for an overview of the diagnostic approach.

Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC B0083 00

Electronic Front End Sensor 1 No Additional Information (Left)

DTC B0083 0F

2008 Chevrolet Silverado 1500

2008 RESTRAINTS Supplemental Inflatable Restraints - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado

Electronic Front End Sensor 1 Erratic (Left)

DTC B0083 39

Electronic Front End Sensor 1 Internal Electronic Failure (Left)

DTC B0083 3A

Electronic Front End Sensor 1 Incorrect Component Installed (Left)

DTC B0083 71

Electronic Front End Sensor 1 Invalid Serial Data Received (Left)

DTC B0084 00

Electronic Front End Sensor 2 No Additional Information (Right)

DTC B0084 0F

Electronic Front End Sensor 2 Erratic (Right)

DTC B0084 39

Electronic Front End Sensor 2 Internal Electronic Failure (Right)

DTC B0084 3A

Electronic Front End Sensor 2 Incorrect Component Installed (Right)

DTC B0084 71

Electronic Front End Sensor 2 Invalid Serial Data Received (Right)

DTC B0085 00

LF Side Impact Sensor No Additional Information

DTC B0085 0F

LF Side Impact Sensor Erratic

2008 Chevrolet Silverado 1500

2008 RESTRAINTS Supplemental Inflatable Restraints - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado

DTC B0085 39

LF Side Impact Sensor Internal Electronic Failure

DTC B0085 3A

LF Side Impact Sensor Incorrect Component Installed

DTC B0085 71

LF Side Impact Sensor Invalid Serial Data Received

DTC B0086 00

RF Side Impact Sensor No Additional Information

DTC B0086 0F

RF Side Impact Sensor Erratic

DTC B0086 39

RF Side Impact Sensor Internal Electronic Failure

DTC B0086 3A

RF Side Impact Sensor Incorrect Component Installed

DTC B0086 71

RF Side Impact Sensor Invalid Serial Data Received

DTC B0087 00

LR Side Impact Sensor No Additional Information

DTC B0087 0F

LR Side Impact Sensor Erratic

DTC B0087 39

2008 Chevrolet Silverado 1500

2008 RESTRAINTS Supplemental Inflatable Restraints - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &

Silverado