GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 41718 Sunroof Timing Pins

Removal Procedure

Important: This sunroof system is timed from the factory in order to allow the actuator to shut off automatically when the sunroof window reaches a certain position. Anytime the sunroof actuator requires removal from the sunroof module, ensure that the sunroof window is in the fully closed position and the sunroof timing pins are installed. Improper removal may cause the timing to be thrown off.

  1. Position the sunroof glass panel to the fully closed position.
  2. Remove the headliner. Refer to Headlining Trim Panel Replacement in Interior Trim.

  3. Object Number: 548328  Size: SH
  4. Remove the right and left front screw from the sunroof glass panel. Refer to Sunroof Glass Panel Replacement .
  5. Important: Before removing the sunroof actuator, ensure that the sunroof timing pins J 41718 are tight and holding the cable/cam mechanisms.

  6. Install the J 41718 into both the right and left front sunroof glass panel screw holes in order to retain the cable/cam adjustments.

  7. Object Number: 791521  Size: SH
  8. Disconnect the electrical connector from the sunroof module actuator.

  9. Object Number: 548068  Size: SH
  10. Remove the bolts from the sunroof actuator.

  11. Object Number: 791663  Size: SH
  12. Remove the sunroof actuator from the sunroof module.

Installation Procedure


    Object Number: 791663  Size: SH
  1. Position the sunroof actuator to the sunroof module.
  2. 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: 548068  Size: SH
  3. Install the sunroof actuator bolts.
  4. Tighten
    Tighten the sunroof actuator bolts to 4 N·m (35 lb in).

  5. Connect the electrical connector to the sunroof actuator.

  6. Object Number: 548328  Size: SH
  7. Remove the sunroof timing pins.
  8. 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.

  9. Install the front screws to the sunroof window.
  10. Tighten
    Tighten the screws to 4 N·m (35 lb in).

  11. Check for the proper operation of the sunroof. Refer to Sunroof Description and Operation .
  12. Install the headliner. Refer to Headlining Trim Panel Replacement in Interior Trim.