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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G3500, VAN PASSENGER EXTENDEDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 501 (SUPPLEMENTAL INFLATABLE RESTRAINT SYSTEM)REPAIR INSTRUCTIONSINFLATABLE RESTRAINT SENSING AND DIAGNOSTIC MODULE REPLACEMENTINSTALLATION PROCEDURE
2008 Chevrolet Chevy Express G3500, Van Passenger Extended

Installation Procedure

2008 Chevrolet Chevy Express G3500, Van Passenger ExtendedSECTION Installation Procedure
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2009 GMC Savana Special, 2009 GMC Savana Camper Special, 2009 GMC Savana, 2009 Chevrolet RV Cutaway, and 2009 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove any dirt, grease, or other impurities from the mounting surface.
    2. Fig 1: Identifying SDM And Mounting Nuts
    GM854229Courtesy of GENERAL MOTORS CORP.
  2. Install the SDM (2) horizontally to the studs.
  3. Point the arrow on the SDM toward the front of the vehicle.
    4. CAUTION: Refer to Fastener Caution .
  4. Install the SDM mounting nuts (1) and tighten to 10 N.m (89 lb in).
  5. Install the SDM (2) electrical connector.
  6. Install the CPA to the SDM electrical connector.
  7. Install the carpet to cover SDM (2).
  8. Install the driver seat. Refer to Driver or Passenger Seat Replacement .
    9. NOTE: The AIR BAG indicator may remain ON after the SDM has been replaced. DTC B1001 may set requiring the SDM part number to be set in multiple modules. If the indicator remains ON after enabling the SIR system, perform the diagnostic system check and follow the steps thoroughly to ensure that the SDM is set properly.
  9. Enable the SIR system. Refer to SIR Disabling and Enabling .
  10. Refer to Control Module References for programming and setup information.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.