1997 GMC Suburban Owner's Manual - Page 338

Cleaning theTop of the Instrument Panel Use only mild soap and water to clean the top surfaces of the instrument panel. Sprays containingsilicones or waxes may cause annoying reflections in the windshield and even make it difficult to see through the windshield under certain conditions. Don't use abrasive cleaners on glass, because they may came scratches. Avoid placing decals o n the inside rear window, since they may have to be scraped off later. If abrasive cleaners are used on the inside of the rear window, an electric defogger element may be damaged. Any temporary license should not be attached across the defogger grid. Care of Safety Belts Keep belts clean and dry. Cleaning the Outsideof the Windshield, Backglass and Wiper Blades I I A CAUTION: If the windshield is not clear after using the windshield washer, or if the wiper blade chatters when running, wax, sap or other material may be on the blade or windshield. Do not bleach or dye safety belts. you do, it If may severely weaken them. In a crash, they might not be able to provide adequate protection. Clean safety belts only with mild soap and lukewarm water. Clean the outside of the windshield with GM Windshield Cleaner, Bon Ami@Powder (non-scratching glass cleaning powder), GM Part No. 105001I or equivalent. The windshield is clean if beads do not form when you rinse it with water. Grime from the windshieldwill stick to the wiper blades and 'affect their performance. Cle'an the blade by wiping vigorously with a cloth soaked in full-strength windshield washer solvent. Then rinse the bladewith water. Check the wiper blades and clean them as necessary; replace blades that look worn. Glass Glass should be cleaned often. GM Glass Cleaner (GM Part No. 1050427) or a liquid household glass cleaner will remove normal tobacco smoke and dust films on interior glass.