1995 GMC Sonoma Owner's Manual - Page 271

Finish Care Occasional waxing or mild polishing of your vehicle by hand may be necessary to remove residue from the paint finish. can get GM You approved cleaning products from your dealer. (See "Appearance Careand Materials" in the Index.) Your vehicle has a "basecoatklearcoat" paint finish. The clearcoat gives more depth and gloss to the colored basecoat. Always use waxesand polishes thatare non-abrasive and made for a basecoatklearcoat paint finish. I NOTICE: Machine compounding or aggressive polishing a on or basecoatklearcoat paint finish may dull the finish leave swirl marks. Foreign materials suchas calcium chloride and other salts, ice melting agents, road oil and tar, tree sap, bird droppings, chemicals fromindustrial chimneys, etc. can damageyour vehicle's finish if they remain on painted surfaces. Wash the vehicle assoon as possible.If necessary, use non-abrasive cleaners that are marked safe for painted surfaces to remove foreign matter. Exterior painted surfaces are subject to aging, weather and chemical fallout that can take theirtoll over a period of years. You can help to keep the paint finish lookingnew by keeping your vehicle garaged covered whenever or possible. Protecting Exterior Bright Metal Parts Bright metal parts should cleaned regularly to keep their luster. Washing be with water is allthat is usually needed. However, you may use GM Chrome Polish on chrome or stainless steel if necessary. trim, Use special carewith aluminum trim.To avoid damaging protective trim, never use auto or chrome polish, steam or caustic to clean aluminum. soap A coating of wax, rubbed to high polish, is recommended for all bright metal parts. Aluminum Wheels (If So Equipped) Your aluminum wheels havea protective coating similar the painted to surface of your vehicle. Don't use strong soaps, chemicals, chrome polish, abrasive cleanersor abrasive cleaningbrushes on them because you could damage this coating. After rinsing thoroughly, a wax may be applied. 6-53