Sunroof Maintenance
1. Clean the surface of the window by wiping with a clean, dampened cloth using GM Window Cleaner GM P/N 10500427 or equivalent.2. Apply a silicone lubricant (GM P/N 12345579 or equivalent) in order to perform the following functions:
^ Prolong the weatherstrip life
^ Help to seal the weatherstrip
^ Assist in eliminating squeaks