I'm not sure I understand your question completely but I just installed the XM unit myself this weekend and had a similar question. The only thing that showed on the screen was the XM channel number. I played around and found that if you pushed the tuning knob in and kept pushing the knob so you went through the audio adjustments you would eventually get to the catagory functions for XM.
Once on that screen turn the knob while on that setting and you can switch the main display from channel number to channel name, artist, or song title. If you want all info displayed you push the tuning knob in once while it's in the main display mode and it will show you the XM channel number, name, artist, and song title. Hope this answers the question.