How to turn off the OnStar navigation voice?
The voice interrupts music AND phone calls, and as I'm mostly using it just to see miles to destination I don't need it.
I don't see a preference setting to turn it off. (For the built-in navigation someone said to turn down the volume when the voice speaks but then how would one turn that back up if you don't know when the voice comes).
Before you say call OnStar, the thing is I'm not the primary driver and whenever I do drive the Volt specialists are not online.