HI,
I install Sirus SIRGM 1 on Chevrolet Uplander 2005 with oem radio (am,fm,single cd, mp3) and BAND button ,cd aux and I don`t have acces to xm 1 and xm 2, I have only acces to am,fm1,fm2 when I push BAND button. I don`t know why. I need your help.