GM Service Manual Online
For 1990-2009 cars only

Important: Due to the tight clearance of the storage compartment front closeout panel to the upper rear end trim finish panel and the rear roof panel headliner, slowly cycle the folding top a few seconds at a time to ensure panels are moving properly and not hanging up or interfering with the folding top.

Important: Inspect the closeout panels with the folding top in the down position. Align the closeout panels so there is an even gap to the upper trim finish panel and to each other. Also ensure there is a consistent closeout of the panel seals to the rear compartment lid.

Fore/Aft Adjustment Procedure


Object Number: 1791537  Size: SH

Important: The folding top will only remain in partial open or closed position for 3 minutes before the hydraulic pressure is released and the top will descend. For adjustments exceeding this time limit, place the folding top in the service position. Refer to Folding Top Retainer Strap Installation Position .


    Object Number: 1792089  Size: SH
  1. Cycle the folding top until the storage compartment closeout panels are in the vertical position.
  2. Loosen the front storage compartment closeout panel hinge bolts (1) and adjust the closeout panel as necessary. Refer to Folding Top Stowage Compartment Closeout Panel Hinge Replacement - Front .
  3. Carefully cycle the folding top, inspecting for proper operation and alignment of the storage compartment closeout panel.

Parallel Adjustment Procedure


    Object Number: 1792089  Size: SH
  1. Cycle the folding top until the storage compartment closeout panels are in the vertical position.

  2. Object Number: 1792267  Size: SH
  3. Adjust the stop (1) located on the underside of the front stowage compartment closeout panel link assembly. Refer to Roof Retractable Stowage Compartment Closeout Panel Actuator Cable Replacement .
  4. Carefully cycle the folding top, inspecting for proper operation and alignment of the storage compartment closeout panel.

Height Adjustment Procedure


    Object Number: 1792089  Size: SH
  1. Cycle the folding top until the storage compartment closeout panels are in the vertical position.

  2. Object Number: 1794287  Size: SH
  3. Loosen the jam nut (1) on the pin/stop located on the folding top side rail link assembly. thread the pin inward or outward as necessary.
  4. Carefully cycle the folding top, inspecting for proper operation and alignment of the storage compartment closeout panels.
  5. Re-tighten the jam nut once proper height is achieved.
  6. Inspect the folding top for proper operation. Refer to Power Folding Top Description and Operation .

Loose or Rattling Outer Panels


    Object Number: 1827788  Size: SH
  1. Cycle the folding top until the storage compartment closeout panels are in the vertical position.
  2. Tighten the screw  (1) under the hinge (2) on the front outer stowage compartment closeout panel link so that the outer panel slightly rubs when its manually cycled outward. Then , back -off the screw slightly.
  3. Carefully cycle the folding top, inspecting for proper operation and alignment of the storage compartment closeout panels.