Hey everyone, I have a 2011 5.7 Hemi Grand Cherokee and experienced the same issue....would go through the starting cycle but not turn over. I bought it new and it now has 46,000 miles on it. Based on what I've read on the forums, I was concerned that the Jeep dealership would play a guessing game and start changing parts (starter, fuel pump, expensive TIPM, etc.) because it seems as if the fix is all over the map. Similar to some of the other comments here, I talked to a strong tech that specialized in diagnostics and drive-ability issues and he told me that the FUEL PUMP RELAY is the problem and that simply pulling out the relay from the TIPM and replacing it will not resolve the issue. He stated that he would wire / splice in a new relay because apparently, that particular wiring and section of the TIPM is faulty. He also told me that many Jeep dealerships simply try and replace the entire TIPM which we all know is expensive. Bottom line, I had the fix done; I was charged $69.97 for the parts and two hours labor ($192.00) and I believe that this tech got it right and knew what he was talking about. One week later and many intentional starts and no problems whatsoever. Attached are several photos that show the external rfuel pump relay being spliced into the wiring harness and wired directly to the battery. Good luck to all that are having this problem!