1998 GMC Suburban Owner's Manual - Page 350

Protecting Exterior Bright Metal Parts Bright metal parts should be cleaned regularly to keep their luster. Washing with water is all that is usually needed. However, you may use chrome polish on chrome or stainless steel trim, if necessary. Use special care with aluminum trim. To avoid damaging protective trim, never use auto or chrome polish, steam or caustic soap to clean alL1tninul-n. A coating of wax, rubbed t o high polish, is recomInended for all bright metal parts. Don't take your vehicle through an automatic car wash that has silicon carbide tire cleaning brushes. These brushes can also damage the surface of these wheels. Cleaning Tires To clean your tires, use a stiff brush with a tire cleaner. NOTICE: When applying a tire dressing always take care to wipe off any overspray or splash from all body or wheels of the painted surfaces on the vehicle. Petroleum-based products may damage the paint finish. Cleaning Aluminum Wheels (If Equipped) Keep your wheels clean using a soft clean cloth with mild soap and water. Rinse with clean water. After rinsing thoroughly, dry with a soft clean towel. A wax may then be applied. Sheet Metal Damage If your vehicle is damaged and requires sheet metal repair or replacement. make sure the body repair shop applies anti-corrosion material to the parts repaired or replaced to restore corrosion protection. The surfkce of these wheels is similar to the painted surface of your vehicle. Don't use strong soaps, chemicals, abrasive polishes, abrasive cleaners or abrasive cleaning brushes on them because you could damage the surface. 6-58