OnStar

See also:

Parking Brake
The vehicle has an Electric Parking Brake (EPB). The switch for the EPB is in the center console. The EPB can always be activated, even if the ignition is off. To avoid draining the battery, ...

Sound
Press CONFIG to enter the configure menu options, then press CONFIG again, repeatedly until Sound is selected or press the Sound screen button to make speaker and DSP (Digital Signal Processing) a ...

Automatic Transmission
If the vehicle is a hybrid, see the hybrid supplement for more information. The vehicle has a Hydra-Matic® 6L80 automatic transmission, and has an electronic shift position indicator within the ins ...