GM Service Manual Online
For 1990-2009 cars only

Synchronization Procedure


    Object Number: 861218  Size: SH

    Important: Verify that both the sunroof motor/actuator and the sunroof guide mechanisms are in the vent position before you begin the synchronization procedure.

  1. Plug the motor/actuator into the harness and provide power until the motor/actuator stops in the vent position. If the motor does not operate when powered, then the motor is already in the vent position.
  2. If the sunroof window is in the closed position, remove the sunroof window. Refer to Sunroof Window Replacement .
  3. Verify that the sunroof guide mechanisms are fully forward and in the vent position.
  4. Install the sunroof motor/actuator. Refer to Sunroof Motor/Actuator Replacement .
  5. Install the sunroof window, if necessary. Refer to Sunroof Window Replacement .
  6. Operate the sunroof to verify proper operation.