GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2009 🢒 TopKick C-Series (Conventional) C4/C5 🢒 Safety and Security 🢒 Supplemental Inflatable Restraints 🢒 Steering Wheel Inflatable Restraint Module Coil Replacement

Removal Procedure

    Warning: Refer to SIR Warning in the Preface section.


    Object Number: 360577 Size: SH
  1. Disable the SIR system. Refer to SIR Disabling and Enabling.
  2. Remove the steering column trim covers. Refer to Steering Column Trim Cover Replacement.
  3. Remove the wire harness assembly (4) from the wire harness strap (5).
  4. Remove the 2 wire harness straps (3) from the wire harness assembly.
  5. Remove the wire harness strap (2) from the upper tilt head assembly (1).

    6. Object Number: 361442 Size: SH
  6. Remove the retaining ring (1).
  7. Remove the SIR coil (2).
  8. Remove the wave washer (3) from the steering column upper shaft.

Installation Procedure

    Object Number: 293254 Size: SH
  1. Align the block tooth on the upper shaft to the 12 o'clock position (1).

    2. Object Number: 361725 Size: SH

    Caution: Ensure all fasteners are securely seated before applying needed torque. Failure to do so may result in component damage or malfunctioning of steering column.

  2. Install the wave washer (1) to the steering column upper shaft.
  3. A new SIR coil assembly will come pre-centered. However if centering is required, refer to Inflatable Restraint Steering Wheel Module Coil Centering.

    4. Object Number: 360591 Size: SH
  4. Align the SIR coil (2) with the horn tower on the turn signal cancel cam (1)

    5. Note: Do not remove the tab on the SIR coil until installation is complete.

  5. Install the pre-centered SIR coil (2) to the steering column upper shaft.

    6. Object Number: 293255 Size: SH
  6. Remove and discard the centering tab (1).

    7. Object Number: 360597 Size: SH

    Caution: Gently pull on the lower coil assembly wire in order to remove any wire kinks inside of the column assembly. Verify that there are NO kinks or bends in the SIR coil assembly wire. If a kink or bend is present, interference may occur with the shaft lock mechanism. Turning the steering wheel may cut or damage the wire.

  7. Install the retaining ring (1). Verify that the ring (1) is firmly seated in the groove on the upper shaft (2).

    8. Object Number: 360577 Size: SH
  8. Install the wire harness assembly (4) into the wire strap (5).
  9. Install the wire harness strap (2) into the upper tilt head assembly (1).
  10. Install wire harness straps (3) to the wire harness assembly.
  11. Install the steering column trim covers. Refer to Steering Column Trim Cover Replacement.
  12. Enable the SIR system. Refer to SIR Disabling and Enabling.