I have an 04. 5 as shown in my sig. It is equipped with the RBQ with 6 disc internal CD changer and Sirius radio. About 25% of the time when I turn on the key (before starting the engine), the radio will revert to CD mode or change to Sirius 184 (the default channel for a new radio). At first I was thinking that the Sirius radio was the problem, but now that the radio is switching to CD mode, that does not seem to be the case. Of course, my 3/36 warranty just expired 3 months ago. Everything works fine once the truck is restarted, till the next time I start things up again.
Bad radio?
Bad radio?