I think this becoming a common problem on these new motors My belt lost 2 ribs when I drove it to the dealer . The mechanic @ Dodge told me it the was the belt slipping as the motor was being shut down that the belt was sliding a little causing the belt to scuff and causing to get a hot spot and over time the belt would come apart since this belt was replaced at 8,000 miles by the dealer this problem hasn't happened again and there is no more of that notorius chirping. I just thought I would pass this info on in case anyone else is having this problem I asked the mechanic if it was turbo decompression and he stated no. I can can see this problem becoming a future TSB . Matt