See also:

How OnStar® Service Works
In order to provide you with OnStar® services, your vehicle’s OnStar® system has the capability of recording and transmitting vehicle information. This information is automatically sent to an ...

Tire Pressure Monitor
This vehicle may have a Tire Pressure Monitor System (TPMS). The TPMS warning light alerts you to a significant loss in pressure of one of the vehicle's tires. If the warning light comes on ...

Traction Off Light
This light comes on briefly while starting the engine. If it does not, have the vehicle serviced by your dealer. If the system is working normally, the indicator light then goes off. The traction ...