just confirming the equipment setup in the first post worked in my 05 base model g6. (no monsoon) the only issue i have is it sounds like i'm in a cave. i adjusted the treble but its all the way up now it sounds close to perfection but you can still tell its off a bit if you listen closely. no static interference though, im guessing the hollow sound is interference of some kind, any help? other thaan that it works perfectly. only costed about 60 bucks with shipping and handling.