1998 Pontiac Bonneville Owner's Manual - Page 303

Cleaning the Outside the of Windshield and Wiper Blades six months. During very cold, damp weather more frequent applicationmay be required. (See "Recommended Fluids and Lubricants" the Index.) in If the windshield is not clear after using the windshield Cleaning the Outside Your Vehicle of washer, or if the wiper blade chatters when running, wax, sap or other material may be on the blade or The paintfinish on your vehicle provides beauty, depth windshield. of color, gloss retention and durability. Clean the outside the windshieldwith GM of Windshield Cleaner, Bon Ami@Powder (non-scratching Washing Your Vehicle The best way to preserve your vehicle's is to finish glass cleaning powder),GM Part No. 1050011. The windshield is clean beads do not if form when you keep it clean by washing it often with lukewarm or rinse it with water. cold water. Grime from the windshield will stick the wiper to Don't wash your vehicle the direct rays the sun. in of blades and affect their performance. Clean the blade by Don't use strong soaps chemical detergents. Use or wiping vigorously with a cloth soaked in full-strength liquid hand,dish or car washing (mild detergent) soaps. windshield washer solvent. Then rinse the blade You can get GM-approved cleaning products from your with water. dealer. (See "Appearance Care and Materials" the in Index.) Don't use cleaning agents that are petroleum Check the wiper blades and clean them as necessary; based, orthat contain acid or abrasives. cleaning All replace blades that look worn. agents should be flushed promptly and not allowed to dry on the surface, or they could stain. Dry finish the Weatherstrips with a soft, clean chamois or all-cotton towel to an Silicone grease weatherstrips will make them last on avoid surface scratches and water spotting. longer, seal better, and not stick or squeak. Apply High pressure car washes may cause water to enter silicone grease with a clean cloth at least every your vehicle. 6-52