GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Oldsmobile 🢒 2002 🢒 Bravada - 2WD 🢒 Restraints 🢒 SIR 🢒 Inflatable Restraint Sensing and Diagnostic Module Replacement

Removal Procedure

    Caution: This vehicle is equipped with a Supplemental Inflatable Restraint (SIR) System. Failure to follow the correct procedure could cause the following conditions:

       • Air bag deployment
       • Personal injury
       • Unnecessary SIR system repairs
    In order to avoid the above conditions, observe the following guidelines:
       • Refer to SIR Component Views in order to determine if you are performing service on or near the SIR components or the SIR wiring.
       • If you are performing service on or near the SIR components or the SIR wiring, disable the SIR system. Refer to Disabling the SIR System.

  1. Disable the SIR system. Refer to Disabling the SIR System .
  2. Remove the floor console. Refer to Console Replacement in Instrument Panel, Gages and Console.
  3. Partially remove the console mounting bracket in order to allow access to the rear carpet. Refer to Floor Console Bracket Replacement in Instrument Panel, Gages, and Console.

    4. Object Number: 741873 Size: SH
  4. Position the rear carpet in order to access the sensing and diagnostic module (SDM).
  5. Disconnect the electrical connectors (2) from the SDM (1).

    6. Object Number: 741874 Size: SH
  6. Remove the nuts that retain the SDM to the floor panel.
  7. Remove the SDM from the vehicle.

Installation Procedure

    Object Number: 741874 Size: SH
  1. Install the SDM to the vehicle.

    2. 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.

  2. Install the nuts that retain the SDM to the floor panel.

    3. Tighten
    Tighten the nuts to 12 N·m (106 lb in).


    Object Number: 741873 Size: SH
  3. Connect the electrical connectors (2) to the SDM (1).
  4. Return the carpet to the fully installed position.
  5. Install the console mounting bracket to the floor panel. Refer to Floor Console Bracket Replacement in Instrument Panel, Gages, and Console.
  6. Install the floor console. Refer to Console Replacement in Instrument Panel, Gages and Console.

    7. 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.

  7. Enable the SIR system. Refer to Enabling the SIR System .