dual gas tank troubles

[69BBsuburban]

Originally Posted by mckirk88

The lines are all new. That was my first replacement. I'm hoping its just a bad switch.

Sorry, I was referring to the original poster.

Originally Posted by staggerd86c-10

well now that i got my cluster done my gas guage works and my drivers tank is full but it will not get gas. as soon as i switch the tanks the fuel pressure just drops.

Is there any fuel in the other tank? If the tank valve has a small, internal leak, it can suck air through the valve from the tank that is empty....