Your satellite radio is hooked up to it's own antenna. It cannot use a regular AM/FM antenna to get signals. Is your AM working? If neither your AM or FM are working first be sure you have an antenna! Seriously, did someone unscrew it and steal it?
Beyond that, the first thing would be to check and see if the antenna is plugged in all the way into the radio.
Thanks for clearing up the antenna confusion. Yes, I do have an antenna. I know this for sure because the Durango is so big that it hits the garage door opening every time I go in and out. I will have to have someone trouble shoot the antenna- I just hate to take it to the dealer for that...$$$$
um, why don't you just take the radio out of the vehicle, check the connection? That sounds like the problem. Its either that, or the wire between the radio and antenna is cut, or the radio is shot. Do some basic troubleshooting yourself. A dealer will charge you an arm and a leg for it.