GM Service Manual Online
For 1990-2009 cars only

Important: Before performing any panel adjustment procedures, refer to Folding Top Manual Operation .

Fore/Aft and Cross Car Adjustment Procedure


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

  4. Object Number: 1228644  Size: SH
  5. Loosen the compartment panel bolts (2) and the nuts (1).
  6. Apply LOCTITE™ Blue, GM P/N 12345382 (Canadian P/N 10953489) or equivalent to the bolts.
  7. Notice: Refer to Fastener Notice in the Preface section.

  8. Adjust the panel as necessary.
  9. Tighten

        • Tighten the bolts to 11 N·m (97 lb in).
        • Tighten the nuts to 6 N·m (53 lb in).
  10. Close the rear compartment.
  11. Verify that the compartment panel is aligned properly. Refer to Folding Top Manual Operation .
  12. Repeat the adjustment procedure as necessary.
  13. Remove the protective covering.
  14. Cycle the folding top under power through one complete cycle in both directions.
  15. Inspect the folding top for proper operation. Refer to Power Folding Top Description and Operation .

Up/Down Adjustment Procedure


    Object Number: 1294374  Size: SH
  1. Place the folding top in the down position.
  2. Open the rear compartment.
  3. Place a protective covering over the interior of the vehicle and the adjacent body panels.
  4. Locate the hydraulic pump beneath the carpet in the storage compartment on the driver side of the trunk.

  5. Object Number: 1274131  Size: SH
  6. Turn the hydraulic pump bypass valve (1) counterclockwise until the valve stops.

  7. Object Number: 1228701  Size: SH
  8. Unlock the storage compartment panel by pulling both of the over-center links (1) down.

  9. Object Number: 1245289  Size: SH
  10. Loosen the bumper jam nuts (1) on the compartment panel.
  11. Notice: Refer to Fastener Notice in the Preface section.

  12. Adjust the bumpers as necessary.
  13. Tighten
    Tighten the jam nuts to 10 N·m (89 lb in).


    Object Number: 1228701  Size: SH
  14. Lock the storage compartment panel by pushing both of the over-center links (1) up.

  15. Object Number: 1274131  Size: SH
  16. Turn the pump bypass valve (1) clockwise until the valve stops.
  17. Install the support and the carpet over the hydraulic pump.
  18. Close the rear compartment.
  19. Verify that the compartment panel is properly aligned. Refer to Folding Top Manual Operation .
  20. Repeat the adjustment procedure as necessary.
  21. Cycle the folding top under power through one complete cycle in both directions.
  22. Inspect the folding top for proper operation. Refer to Power Folding Top Description and Operation .