where is the fuel pump relay? "04 3500 code is fuel pump relay control circuit low voltage. engine dies, fuel at filter new filter, 32,000 miles

 

Should be in your fuse box on the driver fender well, one of the black square boxes in there.

 

Thanks but it is not there on this '04 took it to dealer, ran perfect 35-40 miles plus stop&go town traffic.Service manager said bad transfer pump, good news still under warranty,bad news nation wide backorder. Know of another "04 3500 gravel company truck with 400,000+ miles every 30-35k new pump.yea. must be a problem if not why such a backorder?