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.

Important: Whenever the motor is removed from the vehicle, both the track and the motor must be synchronized before installation. Refer to Track and Motor Synchronization .


    Object Number: 258865  Size: SH
  1. Lower the formed headliner at the front. Refer to Headlining Trim Panel Replacement in Interior Trim.
  2. Remove the 2 fasteners attaching the motor to the roof panel.
  3. Important: Note the location of the electrical connectors before disconnecting.

  4. Disconnect the electrical connectors from the motor.
  5. Remove the sunroof motor.

Installation Procedure

Important: Whenever the motor is removed from the vehicle, both the track and the motor must be synchronized before installation. Refer to Track and Motor Synchronization .


    Object Number: 258865  Size: SH
  1. Connect the electrical harness connectors to the motor.
  2. Synchronize the sunroof motor. Refer to Track and Motor Synchronization .
  3. Install the motor to the roof.
  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 bolts attaching the sunroof motor to the roof panel.
  6. Tighten
    Tighten the bolts to 2 N·m (18 lb in).

  7. Install the formed headliner. Refer to Headlining Trim Panel Replacement in Interior Trim.