GM Service Manual Online
For 1990-2009 cars only

    Object Number: 421395  Size: SH
  1. Install the wave washer (1) onto the steering shaft assembly.

  2. Object Number: 322951  Size: SH

    Important: A new inflatable restraint steering wheel module coil will be pre-centered. Do not remove the centering tab from the inflatable restraint steering wheel module coil until the installation is complete.

  3. If you are installing the existing coil, center the coil first. Refer to Inflatable Restraint Coil Centering - Off Vehicle .
  4. Align the inflatable restraint steering wheel module coil (4) with the horn tower on the turn signal cancel cam assembly (1).
  5. Slide the inflatable restraint steering wheel module coil (4) onto the steering shaft assembly.
  6. Firmly seat the retaining ring (3) into the groove on the steering shaft assembly.
  7. Remove the centering tab from the new inflatable restraint steering wheel module coil (4).
  8. Discard the centering tab.

  9. Object Number: 421403  Size: SH

    Caution: Improper routing of the wire harness assembly may damage the inflatable restraint steering wheel module coil. This may result in a malfunction of the coil, which may cause personal injury.

  10. Attach the wire harness assembly to the steering column with new wire harness straps (1).
  11. Install the upper and lower trim covers. Refer to Steering Column Trim Covers - Assemble - Off Vehicle .
  12. Enable the inflatable restraint steering wheel module. Refer to Enabling the SIR System in SIR.