As predicted, my radio is not giving me any channels other than the one that's always on (and the info screen channel). I just chatted with a SiriusXM rep and he claimed that there are some radios that are "incompatible" with the free promo listening period. This is a radio in a Chrysler 300.
Have you ever heard of such an incompatibility? SiriusXM sent me an email this morning claiming that my radio was now on, but yet it is not. I think Jerico was a sales rep and not a technical rep, so this is probably made-up nonsense.