Yes that is a Sat bud and it was originally for XM but I pulled out the factory radio and put in my Kenwood DVD deck and screen and I use Sirius with it. I also lost Onstar functionality because I pulled the radio and an interace to have it work my new radio would have been 100 dollars so I passed on that.

And yes it does have a rear DVD screen with Auxilary inputs and at the time of this photo I was using the Audio inputs for my Zune. Now that I have the Kenwood in there I dont use these inputs. 🙂