P2509 DODGE -

Question

I have a 2003 dodge 3500 5.9 cummins. Failed to start one morning, never sputtered no low power etc. but thought the fuel pump was out, i replaced the electric fuel pump in the tank, after a couple of cranks truck started and i drove/let it run for about 45min. it ran great later i shut if off, it has not started since. Now the batteries go dead constantly between times i have to work on the truck and batteries are less than a year old.