See also:

Global Positioning System (GPS)
- Obstruction of the GPS can occur in a large city with tall buildings; in parking garages; around airports; in tunnels, underpasses, or parking garages; or in an area with very dense trees ...

Turning the System On and Off
The UFRPA system can be turned on and off by pressing the park assist button located next to the shift lever. The LED next to the park assist button lights up when the system is on and turns ...

Turn-by-Turn
This display is used for the OnStar or Navigation System Turn-by-Turn guidance. See OnStar Overview or the navigation manual, if the vehicle has navigation, for more information. ...