[RUN GMC]

I had a fm frequency style xm radio that broad casted to factory radio in my 86 Regal and in my 87 GMC i installed a satellite capable radio from Alpine.....but if found an retro radio with bluetooth capabilities you could play the sirius/xm app on your phone to your radio thru bluetooth......my 98 GMC has an xm module in the dash that plugs into the radio to provide satellite channels on my older style Alpine.....