Hi Ed, I think you will need to check with Ford support on this. When I look at the device compatibility page, Ford says the regular SYNC works with the G3 a bit differently depending on the carrier: Works on AT&T, Sprint, T-Mobile and Verizon: Automatic Phonebook Download Caller ID SMS Text Messaging Call History Download Bluetooth Audio Streaming Transfer to Privacy Works on AT&T, T-Mobile and Verizon: Join Calls You should be able to find steps for your vehicle here: http://owner.ford.com/how-tos.html Note: Firefox Sync is different, it copies data between Firefox on your desktop and Firefox on your Android device and doesn't connect to your vehicle.