GM Service Manual Online
For 1990-2009 cars only

Caution: Disconnect the power window switch when working inside the driver's door. When operated, the Express Down Feature allows the door window to drop very quickly, without stopping, which could cause personal injury.

  1. Raise the door window.

  2. Object Number: 63818  Size: SH
  3. Remove the door trim panel. Refer to Door Trim Panel Replacement .

  4. Object Number: 63834  Size: SH
  5. Remove the mastic sealer from the window clamp access holes.

  6. Object Number: 63801  Size: SH
  7. Loosen the window clamps on the window regulator.
  8. Jiggle the window to break the window loose from the clamps rubber seals. Verify that the rubber inserts are not dislodged, or stuck on the window.
  9. Note the imprinted reference mark on the glass. Position the mark to the trailing edge of the rearmost clamp on the window regulator.

  10. Object Number: 1285768  Size: SH
  11. Apply masking tape to the leading (1), and top edges (2) of the outer window.
  12. Place a mark on the leading edge tape (1) 8 mm (0.3 in) from the top of the window.
  13. Place a mark on the top tape edges at (2), 10 mm (0.4 in) from the top of the window.
  14. Adjust the window using one of the following methods:
  15. • Put a socket on the clamp bolt and use the socket to move the window.
        1. Adjust the window forward or rearward first.
        2. Adjust the front height second.
        3. Adjust the rear height last.
    • Sit in the vehicle with the door closed and with the aid of an assistant standing outside of the vehicle, position the window in the door opening.
        1. Adjust the window forward or rearward first.
        2. Adjust the front height second.
        3. Adjust the rear height last.
  16. Slide the window in the window clamps as necessary.
  17. • The window should penetrate the leading seal (1) 8 mm (0.3 in).
    • The window should penetrate the top seal at (2) and (3) 10 mm (0.4 in).

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  18. Tighten the window clamps.
  19. Tighten
    Tighten the window regulator window clamp bolts to 16 N·m (12 lb ft).

  20. Carefully open the door, noting any interference between the window and seals.

  21. Object Number: 63834  Size: SH
  22. Install new mastic sealer to the window clamp access holes.

  23. Object Number: 63818  Size: SH
  24. Install the door trim panel. Refer to Door Trim Panel Replacement .
  25. Perform minor height and minor tip-in adjustments as necessary. Refer to Door Window Tip-In Adjustment and Door Window Minor Height Adjustment .