GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 378830  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 SIR system. Refer to Disabling the SIR System in SIR.
  2. Remove the steering column. Refer to Steering Column Replacement .
  3. Disconnect the dimmer switch electrical connector.
  4. Remove the dimmer switch retaining nut (4) and bolt (3).
  5. Remove the dimmer switch rod (5) from the dimmer switch.
  6. Remove the dimmer switch (2).

Installation Procedure


    Object Number: 378830  Size: SH
  1. Install the dimmer switch (2).
  2. Install the dimmer switch rod (5) to the dimmer switch (2).
  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 dimmer switch retaining nut (4) and bolt (3).
  5. Tighten
    Tighten the dimmer switch retaining nut and bolt to 4 N·m (35 lb in).

  6. Connect the dimmer switch electrical connector.
  7. Install the steering column. Refer to Steering Column Replacement .
  8. Enable the SIR system. Refer to Enabling the SIR System in SIR.