My 2500 Dodge SLT (Cummings) is doing the same thing. The Dodge Dealer wanted to put a new ECM ($2100) and said they could not get a code reading out of it. They could not rule out other problems. It runs great, starts fine, but shuts down. I passed thinking they were just out of ideas. It will start back up after awhile (mins-hours). I know it won't start until the "wait to start" light goes on. TO ME A LAYMAN, it sounds like a relay is faulty. I am not sure what triggers the relay. I am still hunting for answers before I spend serious money on the truck.
Wednesday, April 25th, 2012 AT 2:02 AM