I have a 2007 2500 slot with a 5.9 Cummins. Over the weekend I went to the truck and the key fob didn’t work to unlock the doors. So I used the key and got into crank it and it’s cranked up fine but 5 secs later it shuts off.. I thought the fuel filter was back and I changed it and also the fob battery but it did the same thing. Also I disconnected the batteries and let it set unplugged for 30 mins and the hooked everything back up. Then I tried it and the key fob works and the truck cranks and drove great but it went right back to the same stuff the next day..