GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2003 🢒 LeSabre 🢒 Body and Accessories 🢒 Doors 🢒 Rear Side Door Window Regulator Replacement

Removal Procedure

    Object Number: 428660 Size: SH
  1. Remove the door trim panel. Refer to Rear Side Door Trim Panel Replacement .
  2. Remove the door module. Refer to Door Control Module Replacement .
  3. Remove the water deflector. Refer to Rear Side Door Water Deflector Replacement .
  4. Tape the window in the closed position.
  5. Loosen the window regulator to window clamp fasteners 4 revolutions.
  6. Lower the window regulator about 1/2 way down.
  7. Disconnect the electrical connector from the power window motor.
  8. Remove the window regulator to inner door panel fasteners (1,2,3).
  9. Remove the window regulator.
    10. 9.1. Tilt the motor end of the window regulator to the forward end of the door.
    9.2. Tilt the top of the regulator toward the lower, rear corner of the door.
    9.3. Remove the regulator through the front access hole in the door panel.

Installation Procedure

    Object Number: 428660 Size: SH
  1. Install the window regulator into the door through the front access hole in the door panel.

    2. 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.

  2. Install the window regulator fasteners in the following order:

    3. Tighten

    1. Tighten the fastener (1) to 9 N·m (80 lb in).
    2. Tighten the fastener (3) to 9 N·m (80 lb in).
    3. Tighten the fastener (2) to 9 N·m (80 lb in).
  3. Remove the tape from the window.
  4. Lower the window into the window regulator clamps.
  5. Connect the power window motor electrical connector.

    6. Important: Start the vehicle to ensure maximum power to the window motor. This is required to fully seat the window for adjustment.

  6. Raise the window to the fully closed position.

    7. Tighten
    Tighten the window clamp fasteners to 11 N·m (95 lb in).

  7. Inspect the window for proper operation and a tight seal before installing the water deflector and the trim panel.
  8. Install the water deflector. Refer to Rear Side Door Water Deflector Replacement .
  9. Install the door module. Refer to Door Control Module Replacement .
  10. Install the door trim panel. Refer to Rear Side Door Trim Panel Replacement .