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Window UPSTOP Adjustment

NOTE: Window upstop adjuster are color coded. Front upstop adjuster is Neutral, and rear is Black. Adjuster head is 0.23 " (6 mm). One full turn equals 0.04 " (one mm) of glass movement. While facing door inner panel, a clockwise rotation moves window up or counterclockwise rotation moves window down. Lower window slightly in order to relieve pressure before moving any adjusters.
  1. Remove roof rail weatherstrip. Insert a one inch (2.6 cm) roll of masking tape in weatherstrip retainer assembly. Place window in full UP position and close door.
  2. Measure gap between edge of weatherstrip retainer assembly and top edge of window. See Fig 1 . If gap is not within specifications, determine necessary amount of movement for assembly and adjust upstops as necessary.
  3. Install roof rail weatherstrip. Install watershield and speaker assembly to door panel trim. Install door trim panel.
Fig 1: Measuring Upstop Clearance
G00063068Courtesy of GENERAL MOTORS CORP.