Chevrolet Truck Fuel Tank Transfer Switch Wiring

Help with dual tank selector valve wiring

The work has finally begun! I dropped both fuel tanks yesterday and removed all the hoses to measure (roughly 9 feet for both) so I am halfway there. 1976 Chevy 454 big block with factory dual fuel tanks. Has anyone ever replaced the OEM selector valve with one of those Pollak 6 port universal va...

ACDelco D7089C GM Original Equipment Fuel Tank Selector Switch

If your vehicle has dual fuel tanks, this switch allows the vehicle operator to switch between them by operating the valve between the tanks. This original equipment fuel tank selector switch has been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

Can anyone help with the wiring for dual tanks | PlowSite

The wiring diagram is from my '75 manual, but it also matched the donor '81 that I got a fuel tank and switch from. I found a couple of trucks in the junkyard that had different tank wiring than mine, but I didn't check them out carefully. I did notice that they had fewer wires through the firewall and fewer wires connected to the dash switch.

What is the wiring diagram for a 1976 Chevrolet dual tank ...

On ALL trucks in '76 and '77, whether single OR dual tanks, the fuel gauge wire (tan) comes from the main bulkhead connector at the firewall & routes through the engine wiring harness: it follows ...

Dual Tanks

First, when you fill the tank(s), it is filling both at the same time. If you have the type of truck that actually has two filler necks, which sounds like may be the case based on what you said, then none of the following applies. The auxillary (rear) tank has a transfer pump that pumps fuel into the main tank.

Gas tank problem on 1987 with two tanks | Classic Parts Talk

I have a 1987 short bed GMC half ton 4x4. The passanger side tank works fine. As soon as I switch over to the drivers side tank the truck shuts off. I would appreciate and ideas on this, before I dive into it face first. There is gas in the tank. The truck is fuel injected and the sending units are mounted on the tanks. Thanks for any ideas

Dual Tanks Switch Valve?

I only took a quick look but im guessing each tank has 2 lines maybe the sending line and a return or something. Just sorta confused about which ones I would switch over to get to the fuel. Id love to have that full tank lol. Thanks

Newbie with Fuel Pump and Gauge issue 1987 R10 dual tanks

Hi there. I'm having an issue with the Right-Hand tank on my '87 R10. When I flip the switch to the Right-Hand tank, the engine stalls and the fuel gauge doesn't move at all (still reads what's in Left tank).

How does a Chevy truck's dual fuel tanks operate?

Most trucks with dual tanks only have fuel sensors in one tank. I disagree with that as both of them have a float in them. It is possible there is corrosion to the float gauge on fuel pump.

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