I have a H50XM with the 3.0 GM engine. I have the engine shutting off about 30 sec to 1 min before it shuts off and the engine light comes on and flashes 1 flash. It will restart right back up but then shuts off. I have replaced the coolant temperature sensor and jumped out the oil pressure switch. I have removed all of the positive and ground cables and cleaned them. I ran a few grounds just to be on the safe side. I pulled all of the plugs apart to make sure they were clean and no rubbing of any wires I could see. Still the same shutting off after a few seconds. I am lost and need help if anybody could give me advice to we're to go from here would be great. Thanks!