GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. It is only necessary to lower the headliner. Only perform the steps in the headliner replacement procedure 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. Remove the bolts (1) that secure the sunroof module (2) to the roof.
  7. With an assistant, lower and remove the sunroof module assembly.
  8. Transfer all necessary components to the new frame assembly.

Installation Procedure


    Object Number: 977375  Size: SH
  1. With an assistant, position the new sunroof module assembly into the roof opening.
  2. Install the bolts (1) which secure the sunroof module (2) assembly to the roof and tighten the bolts by hand.
  3. Place a 12 mm (0.47 in) pin into the sunroof module alignment holes.
  4. Caution: Refer to Fastener Caution in the Preface section.

  5. Remove the alignment pins and tighten the bolts to 9 N·m (80 lb in).
  6. Install the sunroof window. Refer to Sunroof Window Replacement.
  7. Connect the front and rear sunroof drain hoses. Refer to Sunroof Housing Front Drain Hose Replacement and Sunroof Housing Rear Drain Hose Replacement.
  8. Connect the electrical connectors to the sunroof module.
  9. Secure the harness to the sunroof module.
  10. Adjust the sunroof window. Refer to Sunroof Window Height and Opening Fit Adjustment.
  11. Verify the proper operation of the sunroof before securing the headliner.
  12. Ensure the motor/actuator initialization/teach process has been done. Refer to Sunroof Motor/Actuator Initialization/Teach Process.
  13. Install the headliner. Refer to Headlining Trim Panel Replacement.