I installed mine a few weeks ago on a 03 w/o NAV. It works perfect. Only complaint is that navigating through the IPOD is impossible. I have to either play it by random song or disconnect the IPOD and pick the song/artist then plug it back in. I'm not sure if FX's with factory NAV have an easier way to navigate. I don't have SAT radio but I do have a SAT button on my radio. Good luck!