See also:

Removing the Flat Tire andInstalling the Spare Tire
1. If your vehicle has a wheel cap that covers the wheel nuts, position the chisel end of the wheel wrench in the notch and pry it off. 2. Using the wheel wrench, loosen all the wheel nuts. ...

Reporting Safety Defects to General Motors
In addition to notifying NHTSA (or Transport Canada) in a situation like this, please notify General Motors. Call 1-800-521-7300, or write: Buick Customer Assistance Center P.O. Box 33136 Detroit, M ...

Traction – AA, A, B, C
The traction grades, from highest to lowest, are AA, A, B, and C. Those grades represent the tire's ability to stop on wet pavement as measured under controlled conditions on specified gov ...