GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2008 🢒 XLR 🢒 Roof 🢒 Folding Top 🢒 Folding Top Quarter Window Adjustment

Fore/Aft and Cross Car Adjustment Procedure

    Object Number: 1111822 Size: SH
  1. Open the folding top as shown in the illustration. Dimension (A) is 400 mm (15.75 in) from the windshield header to the leading edge of the folding top panel.
  2. Place a protective covering over the interior of the vehicle and the adjacent body panels.

    3. Object Number: 1229875 Size: SH
  3. Partially remove the quarter window trim (1) to gain access to the quarter window screws (2).
  4. Using a grease pencil, mark the location of the screws (2) to the quarter window bracket (3).
  5. Loosen the quarter window screws (2).
  6. Adjust the quarter window, as necessary.
  7. Apply LOCTITE™ Blue, GM P/N 12345382 (Canadian P/N 10953489) or equivalent to the bolts.

    8. Notice: Refer to Fastener Notice in the Preface section.

  8. Tighten the quarter window screws (2).

    9. Tighten
    Tighten the screws to 7 N·m (62 lb in).

  9. Install the quarter window trim (1).
  10. Manually close the folding top. Refer to Folding Top Manual Operation .
  11. Repeat the adjustment procedure, as necessary.
  12. Remove the protective covering.
  13. Cycle the folding top under power through one complete cycle in both directions.
  14. Inspect the folding top for proper operation. Refer to Power Folding Top Description and Operation .

Approach Angle Adjustment Procedure (First Design)

    Object Number: 1111822 Size: SH
  1. The distance (A) from the windshield header to the leading edge of the folding top panel is 400 mm (15.75 in).
  2. Place a protective covering over the interior of the vehicle and the adjacent body panels.

    3. Object Number: 1246524 Size: SH

    Important: The descriptions and the illustrations below represent the driver side quarter window. The passenger side window is similar, but the directions are reversed.

  3. While holding the turnbuckle (2), loosen both of the jam nuts (1) on the drive rod.

    4. Object Number: 1246526 Size: SH
  4. Turn the turnbuckle (2), as necessary, to adjust the quarter window.
    5. • Turn the turnbuckle clockwise to adjust the driver side window in.
    • Turn the turnbuckle counterclockwise to adjust the driver side window out.
    • Turn the turnbuckle counterclockwise to adjust the passenger side window in.
    • Turn the turnbuckle clockwise to adjust the passenger side window out.

    Object Number: 1246536 Size: SH
  5. While holding the turnbuckle (2) tighten both of the drive rod jam nuts (1).

    6. Tighten
    Tighten the jam nuts to 6 N·m (53 lb in).


    Object Number: 1245291 Size: SH

    Important: A properly aligned quarter window (1) will contact the inner side of the bulb seal (2) at the midpoint of the down slope.

  6. Manually close the folding top, until the rear edge of the quarter window starts to contact the bulb seal. Refer to Folding Top Manual Operation .
  7. Repeat the adjustment procedure, as necessary.
  8. Remove the protective covering.
  9. Cycle the folding top under power through one complete cycle in both directions.
  10. Inspect the folding top for proper operation. Refer to Power Folding Top Description and Operation .

Approach Angle Adjustment Procedure (Second Design)

    Object Number: 1111822 Size: SH
  1. The distance (A) from the windshield header to the leading edge of the folding top panel is 400 mm (15.75 in).
  2. Place a protective covering over the interior of the vehicle and the adjacent body panels.

    3. Object Number: 1229886 Size: SH

    Important: The descriptions and the illustrations below represent the driver side quarter window. The passenger side window is similar, but the directions are reversed.

  3. If the vehicle is equipped with a jamb nut, loosen the jamb nut (1) from the drive rod socket.

    4. Object Number: 1229883 Size: SH
  4. Remove the ball stud lock ring (1).

    5. Object Number: 1357371 Size: SH
  5. Remove the drive rod socket (2) from the ball stud (1).
  6. Turn the drive rod socket, as necessary, to adjust the quarter window.
    7. • Turn the socket clockwise to adjust the driver side window in.
    • Turn the socket counterclockwise to adjust the driver side window out.
    • Turn the socket counterclockwise to adjust the passenger side window in.
    • Turn the socket clockwise to adjust the passenger side window out.
  7. Install the drive rod socket (2) to the ball stud (1).

    8. Object Number: 1229883 Size: SH
  8. Install the ball stud lock ring (1).

    9. Object Number: 1229886 Size: SH
  9. If the vehicle is equipped with a jamb nut, install the jam nut (1) to the drive rod socket. Do NOT tighten the jamb nut.

    10. Object Number: 1245291 Size: SH

    Important: A properly aligned quarter window (1) will contact the inner side of the bulb seal (2) at the midpoint of the down slope.

  10. Manually close the folding top, until the rear edge of the quarter window starts to contact the bulb seal. Refer to Folding Top Manual Operation .
  11. Repeat the adjustment procedure, as necessary.
  12. Remove the protective covering.
  13. Cycle the folding top under power through one complete cycle in both directions.
  14. Inspect the folding top for proper operation. Refer to Power Folding Top Description and Operation .