I have the XM radio in my 2004. It takes about 20 to 30 minutes to setup. You have to leave the radio on for at least 20 minutes for the radio to receive the signal and locks it in. Is it worth it? For me, I feel its not worth it. You can pop in 6 cds and listen to what ever you want for free. The signal sometimes wonders. The only thing I like is the Nascar channel. Try it out for a month(you should have 3 months at n/c)