GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

    Warning: Refer to Battery Disconnect Warning in the Preface section.


    Object Number: 1256850  Size: SH
  1. Disconnect the negative battery cable.
  2. Remove the headliner. Refer to Headlining Trim Panel Replacement.
  3. Remove the drain hoses.

  4. Object Number: 1256851  Size: SH
  5. Disconnect the electrical connectors.
  6. Remove the screws and the motor.

  7. Object Number: 1256852  Size: SH
  8. Remove the motor control module.
  9. Remove the bolts and the housing from the vehicle.

  10. Object Number: 1256853  Size: SH
  11. Remove the rubber end caps.
  12. Remove the drain nozzles.
  13. Remove the shade stops.
  14. Remove the glass stops.

  15. Object Number: 1256855  Size: SH
  16. Remove the shade.
  17. Remove the glass and the frame from the housing.
  18. Remove the plastic trim.
  19. Remove the screws and the glass from the frame.

Installation Procedure


    Object Number: 1256855  Size: SH
  1. Install the glass to the frame with the screws.

  2. Object Number: 1256853  Size: SH
  3. Install the plastic trim.
  4. Install the glass and the frame to the housing.
  5. Install the shade.
  6. Install the glass stops.
  7. Install the shade stops.
  8. Install the drain nozzles.
  9. Install the rubber end caps.
  10. Caution: Refer to Fastener Caution in the Preface section.


    Object Number: 1256852  Size: SH
  11. Install the housing to the roof of the vehicle with the bolts and tighten to 10 N·m (89 lb in).

  12. Object Number: 1256851  Size: SH
  13. Install the motor control module.
  14. Install the motor with the screws and tighten to 3 N·m (27 lb in).
  15. Connect the electrical connectors.

  16. Object Number: 1256850  Size: SH
  17. Install the drain hoses
  18. Install the headliner. Refer to Headlining Trim Panel Replacement.
  19. Connect the negative battery cable.
  20. Calibrate the power sunroof, if necessary. Refer to Power Sunroof Calibration.