Google maps App Issue (Blue Tooth for GMC Acadia) -

I'm having an issue with the our blue tooth which is paired with our GMC Acadia. It's works fine with the exception of each time it gives directions vocally it repeats "Call Ended" through the stereo system..... It does this every single time the App gives vocal instructions.

Apple Maps - No problem although I need to be connected via USB which the vehicle has. Apple Maps is fine so I'm not sure why all the Hype about Google Maps for iOS.

I am just courious if anyone has come across this issue with the Google Maps for iOS in a vehicle.