OnStar Services

See also:

Instrument Panel Overview
A. Air Vents . B. Headlamp High/Low-Beam Changer. Turn and Lane-Change Lever. See Turn and Lane-Change Signals . Driver Information Center (DIC) Buttons. See Driver Information Center (DIC) . ...

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 ...

Engine Oil Life System
The engine oil life system calculates engine oil life based on vehicle use and displays the CHANGE ENGINE OIL SOON message when it is time to change the engine oil and filter. The oil life system ...