inputs.text: problehems 2007 gm worked 2004 gm - first part 2007 h3 hummer 1st vehicle tried product add someone commented new adapter 2007 newer vehicles maybe works better thati love idea product cannot get keep working installed 2007 h3 hummer installation straight forward initially worked like champ sudden quit even sent first unit back got replacehement longest worked without stopping 4 days say stop working happens sudden radio no longer recognizes normally radio show xm1 ipod track info quits working sudden not get xm1 option band button cycles choices ipod still shows connected continues charge take radio disconnect everything reconnect get working driving crazy really want thing workafter going different route 2007 unit successfully installed 2004 grand prix operated flawlessly 3 yearsincreased rating 4 stars based performance 2004 comment adapter 2007 newer