See also:

Air Conditioning Mode
This allows selection of automatic start of the air conditioning upon vehicle start. Selecting On indicates the air conditioning will be on when the vehicle is started. Selecting Off turns t ...

Adjusting the Volume
Turn the VOL/ knob to adjust the volume of the infotainment system after the volume level has been set on the portable audio device. ...

Diagnostics
OnStar Vehicle Diagnostics will perform a vehicle check every month. It will check the engine, transmission, antilock brakes, and major vehicle systems. It also checks the tire pressures, if ...