Is Michigan football on XM Radio

After checking the interwebs, it's unclear if Michigan football is on XM or Sirius. The XM site has the Big Ten logo on it for sports, but Sirius specifically mentions a few marquee schools, uncluding Michigan, USC, UCLA, etc. I'm going on a cross country road trip/move on labor day weekend and I want to make sure I can get the UConn game when I'm somewhere in the Arizona desert.

Any mgobloggers out there with XM? Do I have to get "best of Sirius?" I looked on the websites and no games are scheduled for "this week." Well, that helps.

Thanks in advance!