I have / had this same issue. I also have a 2009, probably same specs as yours...GT AWD, Nav, etc. I say have / had because it has been very frustrating and I'm not sure it was ever really resolved. We had it in twice to the dealer while it was under warranty and they noted the issue in their notes if I continue to have it...out of warranty now. It never seemed to happen consistently, so of course it was hard to replicate for them. The first time we had it in they could not replicate the problem and said they could not find a problem. The next time they replaced some kind of box or switch related to the satellite radio and we had to re-register our sat radio subscription to the new box. We don't use the aux port very often, so I can't say for sure that it has been totally solved, but it seems the few times I have used it since I don't recall having the problem. I know exactly what you mean, it would play for 20-30 seconds and then cut out for a few seconds. I had it happen with portable dvd players, ipods, iphones...so it doesn't seem to be source related. At one point they told us to not put so much stuff in the center console because that could be causing a bad connection to the aux port, or causing a short, but that seems like BS. I also tried multiple cables, so I know it wasn't the cables. It has been one of the few problems we have had with this vehicle, but it's not something we use often, so I've kind of gotten over it bothering me much...used to bother me big time when it was new. That said, I rarely drive it, my wife does, so I suppose if I drove it more I would be testing the issue more to make sure it was fixed. We have almost 50,000 miles on it now. If you come across any new information, please pass it on.
