See also:

Change Compass Zone
The vehicle may have this feature. To change the compass zone through the DIC, see Compass. ...

Fuel Economy Mode
The vehicle may have a fuel economy mode. When engaged, fuel economy mode can improve the vehicle's fuel economy. Pressing the eco button by the shift lever will engage fuel economy mode. Whe ...

How OnStar Service Works
Automatic Crash Response, Emergency Services, Crisis Assist, Stolen Vehicle Assistance, Vehicle Diagnostics, Remote Door Unlock, Roadside Assistance, Turn-by-Turn Navigation, and Hands-Free ...