Check the volume level on the sat radio in settings.
Make sure the bike radio mute is not on.
Check that you have a fairly clean FM frequency (little or no interference) and matched to the sat FM setting.
All of the above as stated for sure. Also I have a xmfm1 direct adapter it is a must if you have a satellite radio in my opinion, you never have to search for a station. Here is a link to one on ebay to show you.