Chevrolet Silverado / GMC Sierra. Manual - part 666
If not the specified range, replace the inflatable restraint I/P module disable switch.
Repair Procedures
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
SIR/SRS Wiring Repairs
Inflatable Restraint Instrument Panel Module Disable Switch Replacement
Control Module References for SDM replacement, setup, and programming
DTC B1000
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 B1000 00
Electronic Control Unit (ECU) Performance No Additional Information Available
Circuit/System Description
This diagnostic is specific to the passenger presence system (PPS) module. The internal fault
detection is typically handled inside the control module, however the PPS module may set DTC
B1000 due to other system malfunctions.
Conditions for Running the DTC
The module runs the program to detect an internal fault when power up is commanded. The only
requirements are voltage and ground. This program runs even if the voltage is out of the valid
operating range.
Conditions for Setting the DTC
The module has detected an internal malfunction or a specific sensor circuit may be shorted.
Action Taken When the DTC Sets
2008 Chevrolet Silverado 1500
2008 RESTRAINTS Supplemental Inflatable Restraints - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
The module refuses all additional inputs.
Conditions for Clearing the DTC
A current DTC clears when the malfunction is no longer present.
A history DTC clears when the module ignition cycle counter reaches the reset threshold of
100, without a repeat of the malfunction.
Diagnostic Aids
DTC B1000 may set in the PPS module due to shorted circuits of the PPS pressure sensor or
the seat belt tension sensor.
This DTC may be stored as a history DTC without affecting the operation of the module.
If stored only as a history DTC and not retrieved as a current DTC, do not replace the
module.
Circuit/System Verification
Ignition ON, with a scan tool, clear DTC. Verify DTC B1000 is not set as current in the PPS.
If DTC is set as a current DTC, replace the PPS.
Repair Procedures
Perform the Diagnostic Repair Verification after completing the repair.
Control Module References for PPS replacement, setup, and programming
DTC B1001 (ROS)
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 Descriptor
DTC B1001 00
Option Configuration Error
2008 Chevrolet Silverado 1500
2008 RESTRAINTS Supplemental Inflatable Restraints - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
Circuit/System Description
The inflatable restraint sensing and diagnostic module (SDM) stores a 4-digit primary key for the
inflatable restraint vehicle rollover sensor (ROS). The SDM sends the ROS the primary key. If
the ROS determines that it is the wrong primary key, the ROS will set DTC B1001 and send the
SDM a vehicle mismatch message. The SDM then will set DTC B0090 3A and turn the SIR
Warning Indicator ON. The ROS does not use a secondary key.
Conditions for Running the DTC
Ignition voltage is between 9-16 volts.
Conditions for Setting the DTC
The 4-digit primary key stored in the SDM does not match the 4-digit key stored in the ROS.
Action Taken When the DTC Sets
The SDM commands the AIR BAG indicator ON.
The SDM disables all rollover related deployments.
Conditions for Clearing the DTC
The 4-digit Primary Key in the SDM and in the ROS match.
Diagnostic Aids
This DTC is an indication that the ROS was not set-up correctly, is not the correct part number or
that the ROS is defective.
Reference Information
Schematic Reference
SIR Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
SIR System Description and Operation
2008 Chevrolet Silverado 1500
2008 RESTRAINTS Supplemental Inflatable Restraints - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado
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 Testing
1. Verify the correct ROS part number has been installed
If the wrong ROS part number was installed, replace with the correct ROS.
2. Verify that DTC B1001 is not set in the ROS.
If DTC is set, perform the Setup New ROS procedure. If DTC resets replace the ROS.
Repair Procedures
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for ROS replacement, setup, and programming
SIR/SRS Wiring Repairs
DTC B1001 (SDM)
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.
IMPORTANT: When removing connectors inspect for damage or corrosion.
Damage or corrosion in the following requires repair or
replacement of the affected.
ROS
ROS wiring harness
2008 Chevrolet Silverado 1500
2008 RESTRAINTS Supplemental Inflatable Restraints - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra &
Silverado