Circuit/System Testing
WARNING: This page is about a different car, the 2010 GMC Terrain and 2010 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
The global positioning system requires a clear line of sight to the sky to operate properly. In most cases the GPS will not have reception near tall buildings or inside structures.
- Ignition OFF, disconnect the global positioning system antenna coax cable from the A11 radio.
- Ignition ON, test for 4.5-5.5 V between the GPS coax cable connection center conductor.
- If not within the specified range, replace the A11 radio.
- If all circuits test normal, replace the T4E global positioning system antenna.