Nav system Buick Lucerne
I'm thinking of looking for a 2010 or 2011 B. Lucerne CXL Premium (or EXL). My question is will the Nav
system talk to me with the stero on, interupt the the sound. And also can I change the route or check
info while the car is moving. ie: the T. Avalon must be sitting still while setting the nav system. Thanks