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

Causes of Slow Moving Window


    Object Number: 443897 Size: SH

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

    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 rearview mirror is rolled over or the window run channel outboard lip at the rear of door frame (2).
    • 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 .
    • Inspect the power window motor for being loose.

    Object Number: 1362843 Size: SH
  2. After inspecting the conditions above, do the following:

    3. Remove the front door trim panel. Refer to Front Side Door Trim Panel Replacement .

  3. Remove the front door water deflector. Refer to Front Side Door Water Deflector Replacement .
  4. Ensure that the window guide to is fully seated and clipped.
  5. Ensure that the window is fully seated into the window guide run channel.
  6. Inspect the window for equal distance between the front and rear run channels.

Adjustment Procedure
  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 retainer to window for the proper alignment to the slots in the window.
    • Inspect the window to be straight up and down position.

    Object Number: 1362845 Size: SH
    • 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. Tighten 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 front door water deflector. Refer to Front Side Door Water Deflector Replacement .
  5. Install the front door trim panel. Refer to Front Side Door Trim Panel Replacement .