GM Service Manual Online
For 1990-2009 cars only

The sunroof motors and sunroof sunshade motors may be operated manually.


    Object Number: 1275543  Size: SH
  1. If the front window is partially open, remove the front window. Refer to Sunroof Window Replacement .
  2. Remove the center sunroof window. Refer to Sunroof Window Replacement .
  3. Important: The four-motor/actuator assembly is for the ultraview-full sunroof with the rear vent.


    Object Number: 1275547  Size: SH

    Important: The two motor/actuator assembly is for the ultraview-half sunroof without the rear vent.

  4. Install a 5/32 in Allen wrench into the hex head gear drive, located on top of the motors.
  5. Turn the Allen wrench clockwise to open the sunroof and sunshade. Turn the Allen wrench clockwise to close the sunroof and sunshade.
  6. After opening or closing the sunroof for service, remove the Allen wrench.
  7. Install the front window, if necessary. Refer to Sunroof Window Replacement .
  8. Install the center sunroof window. Refer to Sunroof Window Replacement .
  9. Initialize the sunroof and sunshade. Refer to Sunroof Rear Window Initialization Process or to Sunroof Front Window/Sunshade Initialization Process .