GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Notice: Use care when removing and installing the headliner. If reusing the headliner lay the headliner down flat on a clean surface. Excessive bending will damage the headliner.

  1. Remove the headliner. Refer to Headlining Trim Panel Replacement in Interior Trim.

  2. Object Number: 258904  Size: SH
  3. Cycle the glass panel to the rear.
  4. Important: Do not remove the fine-thread machine fasteners (4) second from the rear. Identify the fasteners from the inside of the vehicle.

  5. Remove the 8 fasteners (2) from the cover plates. Start with the rear most fastener on both sides.
  6. Cycle the glass panel to the flush or closed position.
  7. Remove the motor. Refer to Power Sunroof Motor Replacement .

  8. Object Number: 258905  Size: SH
  9. Remove the 2 transmission fasteners (1) at the rear of the sunroof housing.

  10. Object Number: 258906  Size: SH

    Important: 

       • In order to prevent damage to the finish, mask the roof panel in front of the sunroof opening using masking tape and paper.
       • Handle the module by the glass panel. Do not squeeze the module or bend the components.

  11. Remove the sunroof module (1) by lifting up and forward.
  12. Transfer all necessary component parts.

Installation Procedure


    Object Number: 258906  Size: SH
  1. Insert the rear of the module through the roof opening. Index the module on the raised guides on the track.
  2. Important: Do not damage the finish at the front of the opening.

  3. Slide the module (1) into the sunroof opening.
  4. As you slide the module under the rear retaining clips, you will feel resistance during the last 6-9 cm (2-3 in) of travel.

  5. Verify that the module (1) is under the clips. This will prevent noise during travel over road irregularities.
  6. Lower the glass panel into the opening.

  7. Object Number: 258905  Size: SH
  8. Install the 2 fasteners (1) in the transmission.
  9. Install the motor. Refer to Power Sunroof Motor Replacement .
  10. Cycle the glass fully to the rear.
  11. Cycle the glass forward 3 mm (0.125 ) in order to remove the load from the bumpers.

  12. Object Number: 258904  Size: SH
  13. Install the 2 rear fasteners (one per side) in the module (3) in order to align the unit.
  14. Install the 6 fasteners (2).
  15. Inspect for the following conditions:
  16. • Proper operation
    • Proper fit
  17. Synchronize the track and motor. Refer to Track and Motor Synchronization .
  18. Install the headliner. Refer to Headlining Trim Panel Replacement in Interior Trim.