OnStar Services

See also:

Brake System Warning Light
The vehicle brake system consists of two hydraulic circuits. If one circuit is not working, the remaining circuit can still work to stop the vehicle. For normal braking performance, both cir ...

TPMS Sensor Matching Process
Each TPMS sensor has a unique identification code. The identification code needs to be matched to a new tire/wheel position after rotating the vehicle’s tires or replacing one or more of the TPMS se ...

New Vehicle Break
Notice: Your vehicle does not need an elaborate break-in. But it will perform better in the long run if you follow these guidelines: • Keep your speed at 55 mph (88 km/h) or less for the first 5 ...