Kevin is correct! Use a CD or use the nav, you can only choose one at a time and you must remove and reinstall the nave disc or cd each time to use it. I dont know of any auto company that would that has a nav in a car or truck that works like that. And we still dont have XM! BIG-C

White 03-H2-LUX

<a target="_blank" href="http://www.gstyle4u.com">
</a>