I have been searching the forums but can't seem to find the answers I am looking for regarding an upgrade to factory Navigation for my 2003 Cadillac Seville STS. I currently have the regular Bose system and want to upgrade to factory Navigation and not loose my steering wheel controls for volume and seek etc.. Anyhow, from my understanding it isn't that difficult for my model year as I have onstar and the GPS integrates into the new factory radio. Now here are my questions...
1: Where can I buy the factory Navigation System for a reasonable price?
2: What modifications must be completed in order to properly install it?
3: Does the unit hold the navigation cd unlike the older versions of this car or must I install a separate system in order to handle the navigation cd?
Any and all info you guys (and girls) can help me with is GREATLY APPRECIATED!
Thank you! -atb