See also:

Reading Lamps
There are reading lamps located on the overhead console and over the rear passenger doors. These lamps come on automatically when any door is opened. To manually turn the reading lamps on or off: ...

Vehicle and Power Issues
OnStar services require a vehicle electrical system, wireless service, and GPS satellite technologies to be available and operating for features to function properly. These systems may not o ...

DIC Compass
The vehicle may have a compass in the Driver Information Center (DIC). See Compass for information. ...