GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Notice: This sunroof system is timed from the factory so that the sunroof actuator automatically shuts off when the window panel reaches a certain position. Be careful not to disrupt this factory timing when removing the sunroof actuator from the sunroof module. Disrupting the factory timing may cause damage to the sunroof system. Close the window panel whenever you remove the sunroof actuator from the sunroof module assembly.

  1. Close the sunroof.
  2. Remove the windshield side upper garnish molding. Refer to Windshield Pillar Garnish Molding Replacement in Interior Trim.

  3. Object Number: 280687  Size: MH
  4. Remove the sunshades (2). Refer to Sunshade Replacement in Interior Trim.
  5. Remove the sunroof control switch. Refer to Sunroof Switch Replacement .
  6. Remove the sunroof opening trim lace. Refer to Sunroof Opening Trim Finish Lace Replacement .
  7. Remove the lower headlining trim finish panel as required.
  8. Disconnect the wire harness connectors from the sunroof motor.
  9. If the sunroof window is not fully closed complete the following steps:
  10. 8.1. Locate the Allen head screw on the drive gear of the sunroof motor.

    The Allen head screw is accessible with the sunroof motor in place.

    8.2. If there is a red retainer surrounding the Allen head screw remove the red retainer.

    Us a small flat blade screwdriver.

    8.3. Turn the Allen head screw until the sunroof glass is fully closed.

    Use the appropriate size Allen wrench.

    You may need to apply a significant amount of force in order to move the sunroof motor with the Allen wrench.

    8.4. After the sunroof glass is fully closed, unscrew the screw approximately 15 degrees.
  11. Remove the sunroof motor bracket bolts.
  12. Remove the sunroof motor.

  13. Object Number: 282455  Size: SH
  14. Before you install a new motor or re-install the old motor, ensure that the motor is timed to the closed position.

Installation Procedure


    Object Number: 282455  Size: SH
  1. Time the original sunroof motor or the new sunroof motor to the closed position.

  2. Object Number: 280687  Size: MH
  3. Install the sunroof motor (7).
  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 sunroof motor bracket bolts (13).
  6. Tighten
    Tighten the sunroof motor bracket bolts to the fully driven and fully seated position. Do not strip the bolts.

  7. Connect the wire harness connectors to the sunroof motor (7).
  8. Install the sunroof opening trim lace. Refer to Sunroof Opening Trim Finish Lace Replacement .
  9. Install the sunroof control switch. Refer to Sunroof Switch Replacement .
  10. Install the sunroof sunshade. Refer to Sunshade Replacement in Interior Trim.
  11. Install the windshield side upper garnish moldings. Refer to Windshield Pillar Garnish Molding Replacement in Interior Trim.