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Home >> Hummer >> 2003 >> H2 >> Repair and Diagnosis >> External Pages >> Different car >> Section 578 (Supplemental Inflatable Restraint System) >> Repair Instructions >> Inflatable Restraint Sensing and Diagnostic Module Replacement >> Removal Procedure
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Removal Procedure

WARNING: This page is about a different car, the 2004 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disable the SIR system. Refer to SIR Disabling and Enabling Zones .
    2. Fig 1: Removing Drivers Seat
    GM833561Courtesy of GENERAL MOTORS CORP.
  2. Remove the drivers seat. Refer to Seat Replacement - Front Bucket in Seats.
  3. Remove the driver side door sill plate. Refer to Door Sill Plate Replacement - Front in Interior Trim.
  4. Fold back the carpet to access the inflatable restraint sensing and diagnostic module (SDM).
    5. Fig 2: View Of Connector Position Assurance (CPA) Flex Lock Button
    GM466123Courtesy of GENERAL MOTORS CORP.
  5. Remove the connector position assurance (CPA) (1) from the inflatable restraint sensing and diagnostic module (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. Fig 3: SDM Wiring Harness Connector & SDM
    GM388339Courtesy of GENERAL MOTORS CORP.
  7. Disconnect the SDM wiring harness connector (1) from the SDM (3).
    8. Fig 4: Identifying SDM
    GM833562Courtesy of GENERAL MOTORS CORP.
  8. Remove the SDM mounting fasteners.
  9. Remove the SDM from the vehicle.
    10. IMPORTANT: The following repair procedures should only be used in the event that the inflatable restraint sensing and diagnostic module (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.
    6. Apply body sealer GM P/N 9984248 around any exposed openings.
    7. Install a new fastener GM P/N 11515933.
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