Express 3500 V8-6.0L (2010)
Air Bag Control Module: Service and Repair
Inflatable Restraint Sensing and Diagnostic Module Replacement
Removal Procedure
Warning
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.
Warning: Refer to SIR Inflator Module Handling and Storage Warning (See: Restraint Systems/Service Precautions/SIR Inflator Module
Handling and Storage Warning).
1. Disable the SIR system. Refer to SIR Disabling and Enabling (See: Body and Frame/Interior Moulding / Trim/Dashboard / Instrument Panel/Air
Bag(s) Arming and Disarming/Service and Repair).
2. Remove the driver seat. Refer to Driver or Passenger Seat Replacement (See: Body and Frame/Seats/Service and Repair/Driver or Passenger Seat
Replacement).
3. Fold back the carpet to access the inflatable restraint sensing and diagnostic module (SDM).
4. Remove the connector position assurance (CPA) from the SDM electrical connector.
5. Disconnect the SDM electrical connector.
6. Remove the SDM (2) mounting nuts (1).
7. Remove the SDM (2) from the vehicle.
Note: The following repair procedures should only be used in the event that the inflatable restraint sensing and diagnostic module (SDM)
mounting studs are damaged to the extent that the SDM may no longer be properly mounted.
8. Repair the studs using the following procedure:
1. Remove and discard the stripped nut.
2. Drill out the weld spots for the weld stud that has been damaged, remove and discard the damaged 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 into place.
5. Migweld the stud at the drilled holes.
6. Apply body sealer GM P/N 9984248 around any exposed openings.
7. Install a new nut (1) GM P/N 11515933.
Installation Procedure
1. Remove any dirt, grease, or other impurities from the mounting surface.
