GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2007 🢒 STS 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Inflatable Restraint Sensing and Diagnostic Module Replacement

Removal Procedure

    Caution: Refer to SIR Caution in the Preface section.

    Caution: Do not strike or jolt the inflatable restraint sensing and diagnostic module (SDM). Before applying power to the SDM, make sure that it is securely fastened with the arrow facing toward the front of the vehicle. Failure to observe the correct installation procedure could cause SIR deployment, personal injury, or unnecessary SIR system repairs.

  1. Disable the SIR system. Refer to SIR Disabling and Enabling .
  2. Remove the center console. Refer to Front Floor Console Replacement.

    3. Important: The SDM is shown with the carpet removed for illustration purposes only. Removal of the front carpet or the front seats is not necessary to service the SDM.


    Object Number: 1452878 Size: SH
  3. Disconnect the wiring harness connector from the SDM.
  4. Remove the SDM mounting fasteners.
  5. Remove the SDM from the console floor.

Installation Procedure

    Object Number: 1452878 Size: SH
  1. Remove any dirt, grease, or other impurities from the mounting surface.
  2. Install the SDM horizontally to the console floor.
  3. Point the arrow on the SDM toward the front of the vehicle.

    4. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  4. Install the SDM mounting fasteners.

    5. Tighten
    Tighten fasteners to 9 N·m (80 lb in).

  5. Connect the wiring harness connector to the SDM.
  6. Install the console. Refer to Front Floor Console Replacement.
  7. Install the driver and the passenger seats to the original position.
  8. Enable the SIR system. Refer to SIR Disabling and Enabling .

    9. Important: 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. Program the new SDM into the dash integration module (DIM).
  10. Refer to Control Module References for programming and setup information.