1997 GMC Savana Van Owner's Manual - Page 288

Cleaning the Outside Your Vehicle of The paint finish on your vehicle provides beauty, depth of color, gloss retention and durability. Finish Care Occasional waxing or mild polishing of your vehicle by hand may benecessary to remove residue from the paint finish. You can get GM-approved cleaning products from your dealer. (See "Appearance Care and Materials" in the Index.) Your GM manufactured vehicle may have a "basecoat/clearcoat"paint finish. The clearcoat gives more depth and gloss to the colored basecoat. Always use waxes and polishes that are non-abrasive and made for a basecoatklearcoat paint finish. Washing Your Vehicle The best way to preserve your vehicle's finish to keep it is clean by washing it often with lukewarmor cold water. Don't wash your vehicle in the direct rays of the sun. Don't use strong soaps or chemical detergents. Use liquid hand, dish or car washing (mild detergent) soaps. Don't use cleaning agents that are petroleum based, or that contain acid or abrasives. All cleaning agents should be flushed promptly and not allowed to dry on the surface, or they could stain. Dry the finish with a soft, clean chamois or an all-cotton towel to avoid surface scratches and water spotting. High pressure vehicle washes may cause water to enter your vehicle. KNOTICE: Machinecompoundingoraggressivepolishing on a basecoatlclearcoat paint finish may dull the finish or leave swirl marks. Foreign materials such as calcium chloride and other salts, ice melting agents, road oil and tar,tree sap, bird droppings, chemicals from industrial chimneys, etc., can damage your vehicle'sfinish if they remain on painted surfaces. Wash the vehicle as soon aspossible. If necessary, usenon-abrasive cleaners that are marked safe for painted surfaces to remove foreign matter. Cleaning Exterior LampsLenses Use lukewarm or cold water, a soft cloth and a liquid hand, dish or vehicle washing (mild detergent) soap to clean exterior lamps and lenses. Follow instructions under "Washing Your Vehicle." 6-54