1996 GMC Safari Owner's Manual - Page 286

Tires To clean your tires, use a stiff brush with a tirecleaner. Finish Damage Any stone chips, fractures or deep scratches in the finish should be repaired right away. Bare metal will corrode quickly and may develop into amajor repair expense. Minor chips and scratches can be repaired with touch-up materials available from your dealer or other service outlets. Larger areas of finish damage can be corrected in your dealer's body and paint shop. NOTICE: When applyinga tire dressing always take care to or wipe off any overspray splash from all painted surfaces on the body wheels of the vehicle. or Petroleum-based products may damage the paint finish. Underbody Maintenance Chemicals used for iceand snow removal and dust control can collect on the underbody. If these are not removed, accelerated corrosion (rust) can occur on the underbody parts such as fuel lines, frame, floor pan and exhaust system even though they have corrosion protection. At least every spring, flush thesematerials from the underbody with plain water. Clean any areas where mud and other debris can collect. Dirt packed in closed areas of the frame should be loosened before being flushed. Your dealer oran underbody vehicle washing system can do this for you. 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. 6-56