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 the vehicle is equipped with the Tire Pressure Monitoring System.
If a diagnostics check is needed between e-mails, push 
, and an Advisor can run a check.
See also:
Reading Lamps
Press the button near each lamp to turn them on or off. ...
Transferring Audio to the Bluetooth System from a Cell Phone
During a call with the audio on the cell phone, press . The audio transfers to the vehicle. If the audio does not transfer to the vehicle, use the audio transfer feature on the cell phone. See your ce ...
Ejecting a Disc
DVD (Eject): Press and release to eject the disc currently playing in the top slot. A beep sounds and Ejecting Disc displays.
If loading and reading of a disc cannot be completed, due to unknown for ...