GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 778921  Size: SH
  1. Remove the sunroof switch selector knob by pulling knob in a downward motion.

  2. Object Number: 778933  Size: SH
  3. Remove the potentiometer from the sunroof switch by releasing tabs (push inward).

  4. Object Number: 779045  Size: SH
  5. Remove the dome lamp lens with a small flat-bladed tool.
  6. Remove the dome lamp from the actuator cover with a small flat-bladed tool.


    Object Number: 779049  Size: SH
  7. Remove the electrical connectors from the dome lamp.

  8. Object Number: 779054  Size: SH
  9. Remove the screws from the actuator motor cover.

  10. Object Number: 779059  Size: SH
  11. Remove the sunroof actuator motor cover, pull down and forward to release actuator motor cover from headliner.

Installation Procedure


    Object Number: 779059  Size: SH
  1. Install the sunroof actuator motor cover to the headliner.

  2. Object Number: 779054  Size: SH

    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.

  3. Install the screws to the sunroof actuator motor cover.
  4. Tighten
    Tighten screws to 2 N·m (18 lb in).


    Object Number: 779049  Size: SH
  5. Install the electrical connectors to the dome lamp.

  6. Object Number: 779063  Size: SH
  7. Install the dome lamp into the actuator cover and press until fully seated.
  8. Install dome lamp lense to the dome lamp and press until fully seated.


    Object Number: 778933  Size: SH
  9. Install the potentiometer to the sunroof switch.

  10. Object Number: 778921  Size: SH
  11. Align selector knob with shaft for sunroof switch and press knob untill fully seated.