GM Service Manual Online
For 1990-2009 cars only

Use this procedure when window height is off less than 3  mm (0.12 in).


    Object Number: 166835  Size: SH
  1. Open the door and remove the small front access plug and the rear access plug from the underside of the door.
  2. Adjust the front and the rear window regulator jack screws equally.
  3. Close the door and check the window alignment.
  4. Open the door and install the access plugs.