GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

    Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

  1. Disconnect the negative battery cable.
  2. Disable the SIR system. Refer to Disabling the SIR System in SIR.
  3. Remove the left sound insulator. Refer to Instrument Panel Insulator Panel Replacement - Left Side .
  4. Disconnect the electrical connector.

  5. Object Number: 291493  Size: SH
  6. Remove the bolts from the dimmer module (1).

Installation Procedure

    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.


    Object Number: 291493  Size: SH
  1. Install the bolts to the dimmer module (1).
  2. Tighten
    Tighten the screws to 4 N·m (35 lb in).

  3. Connect the electrical connector.
  4. Install the left sound insulator. Refer to Instrument Panel Insulator Panel Replacement - Left Side .
  5. Enable the SIR system. Refer to Disabling the SIR System in SIR.
  6. Connect the negative battery cable.