Global Positioning System (GPS) Antenna
WARNING: This page is about a different car, the 2008 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
The global positioning system (GPS) antenna is attached to the bottom of the rear shelf and can be accessed through the rear compartment. The GPS antenna is powered through the same coaxial cable used to send the signals to the NAV.