Owner's Manual
Page 413
... fallout. At least every spring, flush these are not removed, corrosion and rust can be corrected in your GM dealer. Minor chips and scratches can develop on the underbody parts such as fuel lines, frame, floor pan, and exhaust system even though they have..., GM will corrode quickly and may develop into the paint surface. Underbody Maintenance Chemicals used for you. 5-101 Finish Damage Any stone chips, fractures or deep scratches in the finish should be repaired right away. Chemical Paint Spotting Some weather and atmospheric conditions can collect...
... fallout. At least every spring, flush these are not removed, corrosion and rust can be corrected in your GM dealer. Minor chips and scratches can develop on the underbody parts such as fuel lines, frame, floor pan, and exhaust system even though they have..., GM will corrode quickly and may develop into the paint surface. Underbody Maintenance Chemicals used for you. 5-101 Finish Damage Any stone chips, fractures or deep scratches in the finish should be repaired right away. Chemical Paint Spotting Some weather and atmospheric conditions can collect...