Dual fuel tanks

[moosecholak]

I have a 1987 Chevy R10. It's getting no gas. From EITHER tank. Changed cab transfer switch. Not that. Changed fuel transfer valve under truck. That's not it. HELP

 

[CSFJ]

Are you getting power to the pumps? Can you hear them cycle on when you turn the key?

 

[hatzie]

Fuel pump relay?
Is the dash switch or fuel pump relay getting power?

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[smoothandlow84]

That would be my thought as well...bad relay or no power to it. My fuse popped for my fuel pump relay. It would crank over, but not start. I was baffled until I realized that the pump wasnt "buzzing" when the key was turned to the acc position.