GM Service Manual Online
For 1990-2009 cars only

Object Number: 1245145  Size: SH

Note: Before performing any panel adjustment procedures, refer to Folding Top Clearance Gap Specifications.

Note: Before making adjustments to the up/down position of the rear compartment lid, determine which panel needs the adjustment and for what reason.

   • When the rear compartment lid is closed and latched, if the front of the lid is too high or too low relative to the quarter panel and to the rear storage compartment panel, adjust the position of the lid by adjusting the rubber bumpers (2) at the front edge of the lid wings. Refer to the Rear Compartment Lid Wing Adjustment Procedure.
   • When the rear compartment lid is closed and latched, if the lid is too high or too low relative to the quarter panel and to the rear storage compartment panel, adjust the position of the lid by adjusting the rubber bumpers (1) at the rear edges of the rear compartment. Refer to the Rear Compartment Lid Adjustment Procedure.
   • When the vehicle is being driven, if the rear compartment lid rattles, inspect the cross car bumpers. Refer to the Cross Car Adjustment Procedure.

Fore/Aft Adjustment Procedure


    Object Number: 1294374  Size: SH
  1. Place the folding top in the down position.
  2. Place a protective covering over the interior of the vehicle and the adjacent body panels.

  3. Open the rear compartment.

  4. Object Number: 1245292  Size: SH
  5. Loosen the nuts (3) from the rear compartment lid (1).
  6. Apply LOCTITE™ Blue, GM P/N 12345382 (Canadian P/N 10953489) or equivalent to the bolts.
  7. Caution: Refer to Fastener Caution in the Preface section.

  8. Adjust the lid as necessary. Tighten the nuts to 11 N·m (97 lb in).
  9. Close the lid.
  10. Verify that the lid is aligned properly. Refer to Folding Top Clearance Gap Specifications.
  11. Repeat the adjustment procedure as necessary.
  12. Remove the protective covering.
  13. Inspect the folding top for proper operation. Refer to Power Folding Top Description and Operation.

Cross Car Adjustment Procedure - First Design


Object Number: 1245141  Size: SH

The cross car position of the rear compartment is determined by the 2 cross car bumpers (1), one on each side of the rear compartment lid. Each bumper contacts a non-adjustable bracket (2), that is mounted to the longitudinal frame support of the folding top. Both of the bumpers must contact these brackets when the rear compartment lid is closed.


    Object Number: 1294374  Size: SH
  1. Place the folding top in the down position.
  2. Measure the gaps on both sides of the rear compartment lid. Determine the direction and amount of adjustment required. Refer to Folding Top Clearance Gap Specifications.
  3. Open the rear compartment.
  4. Place a protective covering over the interior and the adjacent body panels.

  5. Object Number: 1245143  Size: SH
  6. Loosen the cross car bumper nuts (1) on the rear compartment lid.
  7. Apply LOCTITE™ Blue, GM P/N 12345382 (Canadian P/N 10953489) or equivalent to the bolts.
  8. Caution: Refer to Fastener Caution in the Preface section.

  9. Adjust the bumpers as necessary. Tighten the nuts to 11 N·m (97 lb in).
  10. Close the rear compartment.
  11. Verify that the lid is aligned properly. Refer to Folding Top Clearance Gap Specifications.
  12. Repeat the adjustment procedure as necessary.
  13. Remove the protective covering.
  14. Inspect the folding top for proper operation. Refer to Power Folding Top Description and Operation.

Cross Car Adjustment Procedure - Second Design


Object Number: 1357370  Size: SH

The cross car position of the rear compartment is determined by the 2 cross car bumpers (1), one on each side of the rear compartment lid. Each bumper contacts a non-adjustable bracket (2), that is mounted to the longitudinal frame support of the folding top. Both of the bumpers must contact these brackets when the rear compartment lid is closed.


    Object Number: 1294374  Size: SH
  1. Place the folding top in the down position.
  2. Measure the gaps on both sides of the rear compartment lid. Determine the direction and amount of adjustment required. Refer to Folding Top Clearance Gap Specifications.
  3. Open the rear compartment.
  4. Place a protective covering over the interior and the adjacent body panels.

  5. Object Number: 1357369  Size: SH
  6. Loosen the cross car bumper jamb nuts.
  7. Caution: Refer to Fastener Caution in the Preface section.

  8. Adjust the bumpers (1) as necessary. Tighten the jamb nuts to 10 N·m (89 lb in).
  9. Close the rear compartment.
  10. Verify that the lid is aligned properly. Refer to Folding Top Clearance Gap Specifications.
  11. Repeat the adjustment procedure as necessary.
  12. Remove the protective covering.
  13. Inspect the folding top for proper operation. Refer to Power Folding Top Description and Operation.

Rear Compartment Lid Wing Adjustment Procedure - Up/Down


    Object Number: 1294374  Size: SH
  1. Place the folding top in the down position.
  2. Place a protective covering over the interior of the vehicle and the adjacent body panels.
  3. Open the rear compartment.

  4. Object Number: 1245145  Size: SH
  5. Loosen the jam nuts from the rubber bumper (2) on the quarter panel.
  6. Caution: Refer to Fastener Caution in the Preface section.

  7. Adjust the rubber bumpers (2) up or down to obtain the necessary adjustment. Tighten the jam nuts to 10 N·m (89 lb in).
  8. Close the rear compartment.
  9. Verify that the lid is aligned properly. Refer to Folding Top Clearance Gap Specifications.
  10. Repeat the adjustment procedure as necessary.
  11. Remove the protective covering.
  12. Inspect the folding top for proper operation. Refer to Power Folding Top Description and Operation.

Rear Compartment Lid Adjustment Procedure - Up/Down


    Object Number: 1294372  Size: SH
  1. Place the folding top in the down position.
  2. Place a protective covering over the interior of the vehicle and the adjacent body panels.

  3. Open the rear compartment.

  4. Object Number: 1245145  Size: SH
  5. Loosen the jam nuts from the rear compartment lid bumper (1).
  6. Caution: Refer to Fastener Caution in the Preface section.

  7. Adjust the rubber bumpers (1) up or down to obtain the necessary adjustment. Tighten the nuts to 26 N·m (19 lb ft).
  8. Close the rear compartment.
  9. Verify that the lid is aligned properly. Refer to Folding Top Clearance Gap Specifications.
  10. Repeat the adjustment procedure as necessary.
  11. Remove the protective covering.
  12. Inspect the folding top for proper operation. Refer to Power Folding Top Description and Operation.