1997 Pontiac Firebird Owner's Manual - Page 307

Cleaning theOutside of the Windshield an'dWiper B'lades If the windshield isnot clear after using the windshield washer, or if the wiper blade chatters when running, wax, sap or other materialmay be on the bladeor windshield. Clean theoutside of the windshield with GM Windshield Cleaner, Bon Ami' Powder (non-scratching glass cleaning powder), GM P r No. 1050011. The at windshield is clean if beads do not form when you rinse it with water. Weatherstrips Silicone grease on weatherstrips will make them last longer, seal better, and not stick or squeak. Apply silicone greasewith a clean cloth at least every six months. During very cold, damp weather more frequent application may be required. (See "Recommended Fluids and Lubricants" in the Index.) Cleaning a Removable Roof Panel Special care is necessary when cleaning, removing and/or storing the roof panel. Flush with water to remove dust and dirt, then dry the panel. Clean the panel with GM Glass Cleaner. Leave the cleaner on the panel for minute, then wipe the one panel with a soft, lint-free cloth. Don't use abrasive cleaning materials. Grime from the windshield will stick to the wiper blades and affect their performance. Clean the blade by wiping vigorously with a cloth soaked in full-strength windshield washer solvent. Then rinsethe blade with water. Check the wiper blades and clean them as necessary; replace blades that look worn. 6-62