Drove my vehicle about 55 miles and the engine suddenly quit. on 2003 Dodge Ram 2500

Was able to restart and it ran fine for about 20 miles and suddenly quit. This occurred several more times during that trip back home. I changed out the fuel filter, added 20 gallons of Chevron deisel, and a fuel addative. It is still having the same problem, with no check engine light indicating what the problem could be.

Asked by for the 2003 Dodge Ram 2500
have live data scanned you may have an inj pump issue
Thank you!