See also:

OnStar Personal Identification Number (PIN)
A PIN is needed to access some of the OnStar services, like Remote Door Unlock and Stolen Vehicle Assistance. You will be prompted to change the PIN the first time when speaking with an Advisor. To ch ...

Tire Pressure Monitor System
The Tire Pressure Monitor System (TPMS) uses radio and sensor technology to check tire pressure levels. The TPMS sensors monitor the air pressure in your tires and transmit tire pressure readings to a ...

GMC Terrain in the Market
With the Equinox and Terrain, GM stands to regain some lost share in the crossover market — if for no other reason than 32 mpg in an SUV is no small feat. The Terrain is competitive otherwise, b ...