GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2006 🢒 LaCrosse 🢒 Body 🢒 Doors 🢒 Rear Side Door Window Adjustment

Causes of Slow Moving Window

    Important: Owners may comment that the windows operate slowly when going up or down.

  1. Listed below are conditions that may cause a slow moving window .
    2. • The window run channel outboard lip at the rear of door frame.
    • The window is not seated in the run channel.
    • The window is misaligned in the opening.
    • The regulator is misaligned causing misalignment of the window .
  2. After inspecting the conditions above, do the following:

    3. Remove the rear door trim panel. Refer to Rear Side Door Trim Panel Replacement .

  3. Remove the rear door water deflector. Refer to Rear Side Door Water Deflector Replacement .

    4. Object Number: 1363625 Size: SH
  4. Ensure that the window guide to is fully seated and clipped.

    5. Ensure that the window is fully seated in the window guide run channel.

  5. Inspect the window for equal distance between the front and rear run channels.
  6. Inspect the power window motor for being loose.
  7. Inspect the window for alignment.

Adjustment Procedure

    Object Number: 1363645 Size: SH
  1. Inspect for the following conditions before making adjustments.
    2. • Using a flat-bladed tool, straighten the run channel lip by pulling it out to its correct position.
    • Use a flat-bladed tool to push the run channel rearward to seat it in the door frame.
    • Inspect the window guide channel to window bolts to ensure that they are in the proper slots and the window is not tilted forward.
    • Inspect the window to be straight up and down position.
    • Loosen the bolts that attach the window regulator (1) to the inner door panel, in the specified sequence (2, 3, 4).

    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. Loosen the bolts that attach the window regulator (1) to the inner door panel in the specified sequence (2, 3, 4).

    3. Tighten
    Tighten the bolts to 10 N·m (89 lb in).

  3. Inspect the window for proper operation.
  4. Install the rear door water deflector. Refer to Rear Side Door Water Deflector Replacement .
  5. Install the rear door trim panel. Refer to Rear Side Door Trim Panel Replacement .