GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2004 🢒 Regal 🢒 HVAC 🢒 HVAC Systems - Automatic 🢒 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. Object Number: 217474 Size: SH
  2. Remove the passenger front seat. Refer to Split Bench Seat Replacement or to Front Seat Replacement - Bucket in Seats.
  3. Remove the right side front and rear carpet retainers. Refer to Front Carpet Retainer Replacement and Rear Carpet Retainer Replacement in Interior Trim.
  4. Remove the center pillar, lower trim panel. Refer to Center Pillar Lower Trim Panel Replacement in Interior Trim.
  5. Remove the right insulator panel. Refer to Instrument Panel Insulator Panel Replacement - Right Side in Instrument Panel, Gages and Console.
  6. Reposition the front and rear door weatherstrips as required.
  7. Lift up the carpet to access the inflatable restraint sensing and diagnostic module (SDM).
  8. Remove the connector position assurance (CPA) from the connector to the SDM.

    9. Object Number: 217475 Size: SH
  9. Disconnect the connector from the SDM.

    10. Object Number: 238075 Size: SH
  10. Remove the SDM mounting fasteners (1).
  11. Remove the SDM (2) from the floor pan (3).

Installation Procedure
  1. Remove any dirt, grease, or other impurities from the mounting surface.

    2. Object Number: 238075 Size: SH
  2. Install the SDM (2) horizontally to the vehicle (3).
  3. Point the arrow on the SDM toward the front of the vehicle.

    4. Notice: Refer to Fastener Notice in the Preface section.

  4. Install the SDM mounting fasteners (1).

    5. Tighten
    Tighten the fasteners to 10 N·m (89 lb in).


    Object Number: 217475 Size: SH
  5. Connect the connector to the SDM.

    6. Object Number: 217474 Size: SH
  6. Install the CPA to the SDM connector.
  7. Position the carpet to cover the SDM.
  8. Reposition the front and rear door weatherstrips as required.
  9. Install the right side front and rear carpet retainers. Refer to Front Carpet Retainer Replacement and Rear Carpet Retainer Replacement in Interior Trim.
  10. Install the center pillar, lower trim panel. Refer to Center Pillar Lower Trim Panel Replacement in Interior Trim.
  11. Install the right insulator panel. Refer to Instrument Panel Insulator Panel Replacement - Right Side in Instrument Panel, Gages and Console.
  12. Install the passenger front seat. Refer to Split Bench Seat Replacement or to Front Seat Replacement - Bucket in Seats.

    13. 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.

  13. Enable the SIR system. Refer to SIR Disabling and Enabling .