Depending on where the leak is located, you may have to remove the trim molding or the headliner in order to repair the leak.

In order to repair a leak when removal of the molding or the headliner is necessary, perform the following steps:

1. Cut out a portion of the adhesive in the leak area from inside or outside the vehicle.
2. Clean and remove all loose particles from the area.
3. Caulk in adhesive between the window and the pinchweld flange where the old adhesive has been cut away.
4. Feather the old adhesive out several inches in order to cover each side of the leak area.
5. Use urethane adhesive, GM P/N 12346284, or equivalent.
6. Mist the newly applied adhesive with water in order to cure the adhesive.
7. Test the vehicle for leaks.
8. Install the molding.
9. Allow the adhesive to dry for several hours.
10. Test for water leaks. Refer to the following procedures:

•	Waterleak Test Preparation

•	Water Hose Test

•	Air Hose Test