1993 Pontiac Firebird Owner's Manual - Page 266

Glass Glass should be cleaned often.GM Glass Cleaner (GM Part No. 1050427) or a liquid household glass cleanerwill remove normal tobacco smoke anddust Cleaning the Outsideof the Windshield and Wiper Blades If the windshield is not clearafter using the windshield washer, or if the wiper blade chatters when running,wax or other material may be on the blade or films. windshield. Don't use abrasive cleaners on glass, because they may cause scratches. Avoid Clean the outside of the windshield with placing decals on the inside rear window, GM Windshield Cleaner, Bon-Ami Powder@(GM Part No. 1050011). The since they may have to be scrapedoff later. If abrasive cleanersare used on the windshield is cleanif beads do not form when you rinse it with water. inside of the rear window, an electric defogger element may be damaged. Any Clean the bladeby wiping vigorously temporary license should notbe attached with a cloth soaked in full strength across the defogger grid. windshield washer solvent. Then rinse the blade with water. Wiper blades should bechecked on a regular basis and replaced when worn. Cleaning Win Lift-off Roof Panels Special care is necessary when cleaning, removing and/or storingthe roof panels. Flush off dust and dirt with water, then dry the panels. Clean the panels with GM Glass Cleaner. Leave the cleaner on the panel for one minute, then wipe the panel with a soft, lint-free cloth. Don't use abrasive cleaning materials.