Air Bag Control Module: Service and Repair

REMOVAL PROCEDURE
1. Disable the SIR system. Refer to SIR Disabling and Enabling Zone 9.

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.
- If the vehicle interior is exposed to moisture and becomes soaked up to the level of the sensing and diagnostic module (SDM), the SDM and SDM harness connector must be replaced. The SDM could be activated when powered, which could cause airbag deployment and result in personal injury.
- Refer to SIR Caution in Service Precautions.




2. Remove the passenger front seat.
3. Remove the front carpet retainer.
4. Remove the center pillar lower trim panel.
5. Remove the right closeout/insulator panel.
6. Lift the carpet to access the sensing and diagnostic module (SDM).
7. Remove the connector position assurance (CPA) from the wiring harness connector of the inflatable restraint SDM.




8. Disconnect the SDM wiring harness connector.




9. Remove the SDM mounting fasteners (1).
10. Remove the SDM (2) from the floor pan (3).

INSTALLATION PROCEDURE
1. Remove any dirt, grease, or other impurities from the mounting surface.




2. Install the SDM (2) horizontally to the floor pan (3).
3. Point the arrow on the SDM toward the front of the vehicle.
4. Install the SDM mounting fasteners (1).

NOTE: Refer to Fastener Notice in Service Precautions.

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

IMPORTANT: If the SDM mounting holes or fasteners are damaged to the extent that the module can no longer be properly mounted, use the following repair. Torque the replacement fastener with a hand tool in order to prevent stripping the replacement fastener.

First Repair
4.1. Remove and discard the stripped fastener (1).
4.2. Install the SDM (2) with new fastener GM P/N 10156138.

Tighten
Tighten the fastener to 10 N.m (89 lb in).

Second Repair
4.1. Remove and discard the stripped fastener (1).
4.2. Install the SDM (2) using a larger fastener GM P/N 10267482 with a washer GM P/N 11500305.

Tighten
Tighten the fastener to 5 N.m (44 lb in).




5. Install the SDM wiring harness connector.




6. Install the CPA to the SDM wiring harness connector.
7. Install the carpet and the front carpet retainer.
8. Install the center pillar lower trim panel.
9. Install the right closeout/insulator panel.
10. Install the passenger front seat.
11. Enable the SIR system.