See also:

Compass
There is a compass display in the Driver Information Center (DIC). The compass receives its heading and other information from the Global Positioning System (GPS) antenna, StabiliTrak, and vehicle sp ...

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 ...

Power Reclining Seatbacks
Power Reclining Seatbacks To raise or recline the seatback, tilt the top of the vertical control forward or rearward. See Reclining Seatbacks. ...