i have a 07 with the factory nav. no backup camera option though. if your looking for aftermarket, you cant beat a pioneer avic nav system. had one installed in my old escalade and loved it. you can do all kinds of stuff with those nav kits.
this is the kit im wanting to put into my hummer and camaro.
http://www.pioneerelectronics.com/PU...on/AVIC-X930BT MSRP is about 1,000 , but sells here for 600
https://www.speakerboom.com/product_...roducts_id=618