GM Service Manual Online
For 1990-2009 cars only

Notice: The air hose test should only be used on fully cured urethane adhesive. Otherwise, damage to the urethane adhesive bead could result in additional leaks.

  1. Use liquid detergent diluted with water in a squirt bottle.
  2. Use a helper inside the cab with an air hose.

  3. Object Number: 95574  Size: SH
  4. Begin at the bottom window and gradually move up the window edges across the top, and squirt soap solution on the window moldings and the glass on the outside of the vehicle.
  5. Important: Do NOT exceed the air pressure of 205 kPa (30 psi).

  6. Use a helper to aim the compressed air at the same locations from the inside of the vehicle.
  7. Bubbles will form in the soap solution at the location of the leak.