For 1990-2009 cars

1. Remove the trim moldings or the headliner as needed in order to repair the leak.
2. Determine the source of water entry.
3. If water is leaking at the edge of the windshield, reseal the windshield using Urethane Adhesive Caulking Kit GM P/N 12346392 or the equivalent.
4. If water leaks into the vehicle at the sides of the stationary windows, reseal the window using Urethane Adhesive Caulking Kit GM P/N 12346392 or the equivalent.