Owner's Manual
Page 287
...repaired with plain water. Un,derbody Maintenance Chemicais used€or ice,and snow removal and-dust control can collect. into the paint surface. outlets. underbody.partssuch asfuel lines, frame, floor pan, and exhaust system even though they have corrosion protection. Dirt ...corrected , in your vehicle. Airborne pollutants can occurthe .on the underbody. If these materials from the Although no defect inthe paint job causes this, Buick of will corrode quickly and may develop a major repair expense. Your dealer oran underbody vehicle washing system can do this fallout...
...repaired with plain water. Un,derbody Maintenance Chemicais used€or ice,and snow removal and-dust control can collect. into the paint surface. outlets. underbody.partssuch asfuel lines, frame, floor pan, and exhaust system even though they have corrosion protection. Dirt ...corrected , in your vehicle. Airborne pollutants can occurthe .on the underbody. If these materials from the Although no defect inthe paint job causes this, Buick of will corrode quickly and may develop a major repair expense. Your dealer oran underbody vehicle washing system can do this fallout...