GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2002 🢒 Park Avenue 🢒 Body and Accessories 🢒 Body Control System 🢒 Inflatable Restraint Sensing and Diagnostic Module Replacement

CAUTION: Be careful when you handle a sensing and diagnostic module (SDM). Do not strike or jolt the SDM. Before applying power to the SDM:

   • Remove any dirt, grease, etc. from the mounting surface
   • Position the SDM horizontally on the mounting surface
   • Point the arrow on the SDM toward the front of the vehicle
   • Tighten all of the SDM fasteners and SDM bracket fasteners to the specified torque value
Failure to follow the correct procedure could cause air bag deployment, personal injury, or unnecessary SIR system repairs.

Removal Procedure

    Object Number: 381863 Size: SH
  1. Disable the SIR system. Refer to Disabling the SIR System .
  2. Remove the front passenger seat. Refer to Seat Replacement in Seats.
  3. Remove or lift up the carpet from the vehicle. Refer to Floor Panel Carpet Replacement in Interior Trim.
  4. Lifting the carpet and insulation will gain access to the inflatable restraint sensing and diagnostic module (SDM).

    5. Object Number: 661777 Size: SH
  5. Remove both wiring harness connectors (3) that link the Connector Position Assurance (CPA) (1) to the SDM .
  6. Disconnect both wiring harness connectors (3) from the SDM (2).

    7. Object Number: 661780 Size: SH
  7. Remove the SDM mounting fasteners (2).
  8. Remove the SDM (1) from the vehicle floor (3).

Installation Procedure

    Object Number: 661780 Size: SH
  1. Install the SDM (1) to the vehicle floor (3).

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

  2. Install SDM mounting fasteners (2).

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


    Object Number: 661777 Size: SH
  3. Connect both wiring harness connectors (3) to the SDM (2).
  4. Install both wiring harness connectors (3) from the CPA (1) to the SDM .

    5. Object Number: 381863 Size: SH
  5. Install the carpet into the vehicle. Refer to Floor Panel Carpet Replacement in Interior Trim.
  6. Install the front passenger seat. Refer to Seat Replacement in Seats.
  7. Enable the SIR system. Refer to Enabling the SIR System .

    8. 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.

  8. Reprogram the BCM. Refer to Body Control Module (BCM) Programming/RPO Configuration in Body Control System.