MBPXJ

Finally had time under the hood & I found that when the transmission company installed the power supply for the transmission temp sensor the battery terminal nut was put on finger tight..... pretty sure that was the primary issue. I also checked & cleaned all grounding connections. Batteries are brand new. I did change the fuel filter & found some debris in the bottom of the filter housing but nothing crazy. Drained the fuel from the filter housing & did not find any water. Just got back from vacation towing a toy hauler 300 miles & it did not miss a beat. Thank you @Tractorman & @Mopar1973Man

I bought a 2004.5, crew cab, long bed, Laramie, 4x4 with 290,000 miles on it a handful of months ago. Engine is stock, I had to rebuild the transmission a month after buying it (that was a fun surprise) it had previously been shifting good, until it left the family stranded while towing our small toy hauler on vacation. While driving down a bumpy dirt road yesterday all the lights on the dash flashed & the engine turned off...I pulled over, put it in park reset the key & the truck started right up. About 7 miles further it did the same thing. I eventually got to work. On the way home, stayed on asphalt, it shut down again shortly after leaving work while driving on a bumpy driveway. I do not know if it is related or not but a week or two before this happened the fuel tank was around 1/4 full & the truck would have to crank for 5-8 seconds before it would start. Sometimes it would start right away, and then die out & I would have to hold the key longer for it to continue running. But after I got a full tank it has not had the starting problem again. But I have yet to go through another tank of fuel. I have been running Everyday Diesel Treatment in every tank. I do not believe that the previous owner ran any fuel treatment. I do not drive the truck daily. Just for home depot runs, weekends, etc. Any ideas would be greatly appreciated!