I have an 07 which was wrecked and we are just finishing rebuilding it. The first problem is the air conditioner does not work. We have verified that the compressor is good and and is charged. When we "short it" at the ecm it works fine. I dont know if this is normal but the fans run anytime the car is running. Also it is showing code P1607 about every three to five times I start it. I see from prior post that some people are having this problem but I have not seen anyone rectify the problem. The car has a brand new pcm. Any suggestions would be appreciated.