GM Service Manual Online
For 1990-2009 cars only

    Object Number: 421408  Size: SH

    Caution: This vehicle is equipped with a Supplemental Inflatable Restraint (SIR) System. Failure to follow the correct procedure could cause the following conditions:

       • Air bag deployment
       • Personal injury
       • Unnecessary SIR system repairs
    In order to avoid the above conditions, observe the following guidelines:
       • Refer to SIR Component Views in order to determine if you are performing service on or near the SIR components or the SIR wiring.
       • If you are performing service on or near the SIR components or the SIR wiring, disable the SIR system. Refer to Disabling the SIR System.

  1. Disable the inflatable restraint steering wheel module. Refer to Disabling the SIR System in SIR.
  2. Remove the upper and lower trim covers. Refer to Steering Column Trim Covers - Disassemble - Off Vehicle .
  3. Important: When removing the horn contact, the horn contact spring may become a projectile. Remove slowly.

  4. Remove the horn contact (2) from the signal switch housing assembly (1) in the following manner:
  5. 3.1. Turn the horn contact plunger to release it from the signal switch housing assembly (1).
    3.2. Remove the horn contact (2) and spring.

    Object Number: 421403  Size: SH
  6. Remove the wire harness straps (1) from the steering column and the steering column wire harness assembly.

  7. Object Number: 421410  Size: SH
  8. Disconnect the connectors of the steering column wire harness assembly.