OnStar Services

See also:

Tire Sidewall Labeling
Useful information about a tire is molded into its sidewall. The examples show a typical passenger vehicle tire and a compact spare tire sidewall. Passenger (P-Metric) Tire Example (A) Tire Size: T ...

StabiliTrak®
The vehicle may have the StabiliTrak system that assists with directional control of the vehicle in difficult driving conditions. The system turns on automatically every time the vehicle is star ...

Certification Label
A vehicle specific Certification label is found on the rear edge of the driver door. The label shows the gross weight capacity of your vehicle, called the Gross Vehicle Weight Rating (GVWR). ...