See also:

How OnStar Service Works
Push this blue button to connect to a specially trained OnStar Advisor to verify your account information and to answer questions. Push this red emergency button to get priority help from specially ...

Trunk
WARNING Exhaust gases can enter the vehicle if it is driven with the liftgate, trunk/hatch open, or with any objects that pass through the seal between the body and the trunk/hatch or liftgate. ...

Languages
The vehicle supports English, French (Canadian), and Spanish. The default language is English. Turn the TUNE/MENU knob to highlight the language. Press TUNE/MENU to change the display language. ...