GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. It is only necessary to lower the headliner. Only do those step in headliner replacement that will lower the headliner enough to gain access to the part. Refer to Headlining Trim Panel Replacement.

  2. Object Number: 977375  Size: SH
  3. Remove the sunroof window. Refer to Sunroof Window Replacement.
  4. Disconnect the electrical connector from the sunroof module.
  5. Disconnect the front and rear sunroof drain hoses. Refer to Sunroof Housing Front Drain Hose Replacement and Sunroof Housing Rear Drain Hose Replacement.
  6. With the aid of an assistant, remove the bolts that secure the sunroof module.

Installation Procedure

  1. Before transferring any parts perform the timing/synchronization of the sunroof frame. Refer to Sunroof Track Timing/Synchronization.
  2. Transfer all necessary parts to the new module.

  3. Object Number: 977375  Size: SH
  4. With the aid of an assistant, position the new sunroof module into the roof opening.
  5. Caution: Refer to Fastener Caution in the Preface section.

  6. With the aid of an assistant, install the bolts that secure the sunroof module to the roof.
  7. Tighten
    Tighten the bolts to 8 N·m (70 lb in).

  8. Connect the front and rear sunroof drain hoses. Refer to Sunroof Housing Front Drain Hose Replacement and Sunroof Housing Rear Drain Hose Replacement.
  9. Connect the electrical connectors to the sunroof module.
  10. Install and adjust the sunroof window. Refer to Sunroof Window Height and Opening Fit Adjustment.
  11. Ensure the motor/actuator initialization/teach process has been done. Refer to Sunroof Motor/Actuator Initialization/Teach Process.
  12. Verify the proper operation of the sunroof before installing the headliner.
  13. Install the headliner. Refer to Headlining Trim Panel Replacement.