See also:

Different Size Tires and Wheels
If wheels or tires are installed that are a different size than the original equipment wheels and tires, vehicle performance, including its braking, ride and handling characteristics, stabil ...

Vehicle Identification Number (VIN)
Vehicle Identification Number (VIN) This legal identifier is in the front corner of the instrument panel, on the left side of the vehicle. It can be seen through the windshield from outsi ...

Automatic Crash Response
In a crash, built in sensors can automatically alert an OnStar advisor who is immediately connected to the vehicle to see if you need help. ...