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Post the codes you got. That will give us more to go on.
If a whole bank died, that points to an electrical problem in the injector circuits, but you also mentioned a fuel pump code (the only one available is monitoring the fuel pump relay secondary circuit - fuel pump not powered) so it could easily be a lack of fuel delivery. These engines will run without a working fuel pump as long as the fuel lines are tight and not leaking air into the system. But they will run like crap, barely able to move the truck.
But like I said, the codes you got are important to know.
If a whole bank died, that points to an electrical problem in the injector circuits, but you also mentioned a fuel pump code (the only one available is monitoring the fuel pump relay secondary circuit - fuel pump not powered) so it could easily be a lack of fuel delivery. These engines will run without a working fuel pump as long as the fuel lines are tight and not leaking air into the system. But they will run like crap, barely able to move the truck.
But like I said, the codes you got are important to know.