Global Positioning System (GPS) Antenna
WARNING: This page is about a different car, the 2018 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
The Global Positioning System (GPS) antenna is located externally of the vehicle. The GPS antenna is powered through a coaxial cable from the Navigation Control module. The Antenna contains not only function for basic GPS but a Geomagnetic sensor, Acceleration sensor, Motion sensor, and a Gyroscope to provide accurate GPS location. Interference to the system may occur if signals are obstructed by atmospheric conditions, objects, tall buildings, and trees