After dealing with this for almost a year and being told it was dirty diesel, dirty fuel tank, dirty fuel lines, bad fuel pump by the dealer and replacing my pump with an after market FASS system, the problem continued to occur. Usually when the truck is in operation on the highway or in heavy traffic. After trial and error we have determined that the TIPM is the issue and we can temporarily correct the fault but wedging an object in the cover of the TIPM that applies pressure down as a temporary fix on a cold solder joint or other loose connection that cannot be seen within the module. I am 1500 miles from home and cannot find one in stock so I am going to attempt to travel back using our fix.