Owner's Manual
Page 300
...in the paint job causes this fallout condition within 12 months or 12,000 miles (20 000 km) of new vehicles damaged by this , Buick will corrode quickly and may damage the paint finish. Minor chipsand scratches can create a chemical fallout. If these materials from your dealer or ... spots etched into a majorrepair expense. Dirt packed in the finish should be repaired right away. This damage can collect on the underbody parts such as fuel lines, frame, floor pan and exhaust system even though they have corrosion protection. Underbody Maintenance Chemicals used for you.
...in the paint job causes this fallout condition within 12 months or 12,000 miles (20 000 km) of new vehicles damaged by this , Buick will corrode quickly and may damage the paint finish. Minor chipsand scratches can create a chemical fallout. If these materials from your dealer or ... spots etched into a majorrepair expense. Dirt packed in the finish should be repaired right away. This damage can collect on the underbody parts such as fuel lines, frame, floor pan and exhaust system even though they have corrosion protection. Underbody Maintenance Chemicals used for you.