GM Service Manual Online
For 1990-2009 cars only

    Object Number: 490212  Size: SH
  1. Park the vehicle on a flat surface.
  2. Inspect the fit of the door window to the weatherstrips.
  3. Inspect the windshield reveal molding.
  4. Perform a generalized water test using a test stand. This will aid you in determining where to perform a localized test.