1994 Chevrolet Astro Owner's Manual - Page 276

Cleaning Vinyl Use warm water and a clean cloth. Rub with a clean, damp cloth to remove dirt.You may have to do it more than once. Things like tar, asphalt and shoe polish will stain you don't get them if off quickly. Use a clean cloth and a solvent-type vinyl cleaner. Cleaning theTop of the Instrument Panel Use only mild soap and waterto clean the top surfaces the instrument of panel. Sprays containing silicones or waxes may cause annoying reflections in the windshield and even make it difficult see through the windshield to under certain conditions. Care of Safety Belts Keep belts clean and dry. Glass Glass should be cleanedoften. GM Glass Cleaner (GM Part No. 1050427) or a liquid householdglass cleaner will remove normal tobacco smoke and dust films. Don't use abrasive clean' on glass, because tney may cause scratches. Avoid placing decals on me inside rear window, since they may haveto be scraped off later. If abrasive cleaners used on the insideof the rear are window, an electric defogger element may be damaged. Any temporary license should not be attached across the defogger grid. Cleaning the Outside the Windshield, of Backglass and Wiper Blades If the windshield is notclear after using the windshield washer, or if the wiper blade chatters when running, wax other material may be on the or blade or windshield.