GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

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 SIR system. Refer to Disabling the SIR System in SIR.
  2. Remove the steering column. Refer to Steering Column Replacement .
  3. Remove the headlamp dimmer switch. Refer to Headlamp Dimmer Switch Replacement - On Vehicle .

  4. Object Number: 378838  Size: SH
  5. Remove the headlamp dimmer switch and ignition switch retaining stud (3).
  6. Remove the ignition switch.
  7. Disconnect the electrical connector to the ignition switch.

Installation Procedure


    Object Number: 378838  Size: SH
  1. Connect the electrical connector to the electrical switch.
  2. Install the ignition switch (2) to the steering column (3).
  3. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  4. Install the headlamp dimmer switch and ignition switch retaining stud.
  5. Tighten
    Tighten the headlamp dimmer switch and ignition switch retaining stud to 4 N·m (35 lb in).

  6. Install the headlamp dimmer switch. Refer to Headlamp Dimmer Switch Replacement - On Vehicle .
  7. Install the steering column. Refer to Steering Column Replacement .
  8. Enable the SIR system. Refer to Enabling the SIR System in SIR.