GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2003 🢒 CTS - RHD 🢒 Restraints 🢒 SIR 🢒 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 in Instrument Panel, Gages and Console.

    3. Object Number: 466123 Size: SH
  3. Remove the connector position assurance (CPA) (1) from the wiring harness connector (2) to the inflatable restraint sensing and diagnostic module (SDM).
  4. Push the flex lock button (3) down and move the sliding connector locking cover (4) to the OPEN position.

    5. 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: 751942 Size: SH
  5. Disconnect the wiring harness connector from the SDM (1).
  6. Remove the SDM mounting fasteners (2).
  7. Remove the SDM from the console floor.

Installation Procedure

    Object Number: 751942 Size: SH
  1. Remove any dirt, grease, or other impurities from the mounting surface.
  2. Install the SDM (1) horizontally to the console floor.
  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 (2).

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

  5. Connect the wiring harness connector (1) to the SDM.

    6. Object Number: 466123 Size: SH
  6. Push the flex lock button (3) down and move the sliding connector locking cover (4) to the CLOSE position.
  7. Install the CPA (1) to the wiring harness connector (2) to the inflatable restraint SDM.
  8. Install the console. Refer to Front Floor Console Replacement in Instrument Panel, Gages and Console.
  9. Install the driver and the passenger seats to the original position.
  10. Enable the SIR system. Refer to SIR Disabling and Enabling .

    11. 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.

  11. Program the new SDM into the dash integration module. Refer to Body Control Module (BCM) Programming/RPO Configuration in Body Control System.