[79BIG10]

Eddie it sounds like the whole thing has been plumbed in wrong. I would look at the lines from the tank to the valve. The return line may be returning back into the passenger tank (not used one) from the fuel pump.

I bought mine from a AC Delco dealer for about $85 but that was 6 port and 1 wire and I think yours is the 5 wire. It may cost more. If it's a single wire you can flip the switch to the driver side in the cab and turn the key on but not turned over. Go under the passenger side of the truck where the valve is and take the green wire off. If you hear it click when you touch the wire to the valve then it's working.