Silverado Classic 1500 4WD V8-4.8L (2007)
Air Bag Control Module: Service and Repair
Inflatable Restraint Sensing and Diagnostic Module Replacement
Removal Procedure
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.
Caution: Refer to SIR Caution.
1. Disable the SIR system. Refer to SIR Disabling and Enabling.
2. Remove the driver seat.
3. Remove the driver side door sill plate.
4. Fold back the carpet to access the inflatable restraint sensing and diagnostic module (SDM).
5. Remove the connector position assurance (CPA) (1) from the inflatable restraint SDM wiring harness connector (2).
6. Push down the flex lock button (3) and slide the connector locking cover (4) to the open position.
7. Disconnect the SDM wiring harness connector (1) from the SDM (3).
8. Remove the SDM mounting fasteners.
9. Remove the SDM from the vehicle.
Important: The following repair procedures should only be used in the event that the inflatable restraint SDM mounting studs and/or
fasteners are damaged to the extent that the SDM may no longer be properly mounted.
10. Repair the fasteners using the following procedure:
1. Remove the stripped nut and discard the nut.
2. Drill out the weld spots to the weld stud from the floor pan side, then remove and discard the stud.
3. Condition the floor panel attaching surface where the new stud is to be installed.
4. Install new weld stud GM P/N 115115602 and clamp the weld stud.
5. Migweld the stud at the drilled holes from above or below the floor pan, as required.
