OnStar Services

See also:

Torque Lock
Torque lock is when the weight of the vehicle puts too much force on the parking pawl in the transmission. This happens when parking on a hill and shifting the transmission into P (Park) is not d ...

Power Outlets
The accessory power outlets can be used to plug in electrical equipment, such as a cell phone or MP3 player. There are two accessory power outlets. One is located under the armrest inside the ...

Battery Voltage
This display, available on some vehicles, shows the current battery voltage. If the voltage is in the normal range, the value will display. For example, the display may read Battery Voltage 1 ...