GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Important: The high-mounted stop lamp has a LED circuit board which is not serviced as a separate part. The entire high-mounted stoplamp must be replaced if the LED circuit board fails.


    Object Number: 313921  Size: SH
  1. Remove the screws from the high-mounted stop lamp.
  2. Remove the high-mounted stoplamp from the body.
  3. Disconnect the electrical connector.

Installation Procedure

  1. Connect the electrical connector.

  2. Object Number: 313921  Size: SH
  3. Install the high-mounted stop lamp to the body.
  4. 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.

  5. Install the screws to the high-mounted stop lamp.
  6. Tighten
    Tighten the screws to 6 N·m (53 lb in).