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ok Fuel pump in tank....then if so, you will not hear the fuel pump run at least for the most part I assume you can't. I was thinking you had an external fuel pump. Seomone may have setup a tank like the stock GM setup...ie in-tank fuel pump. I see now where you say it has a GM van tank.
I'm guessing you have no gas at the throttle body ( did you do the simple test I suggested)?
TBI...you can read the ECM codes with a paper clip. You ground the ALDL connector and the check engine light will flash. First flash if single stands for one.... next if quick flashes...you count them to equal whatever value... ie.. one slow flash = one...then three quick flahes = 3.... 1&3 =13. Code readers are cheap though...
Gonna suck if you have to drain the gas...
I would attempt to determine the hot wire that feeds the fuel pump. When key on...it should be "hot"... it its hot...then I would say you have a bad fuel pump. Or you need to do a simple test to physcially see if gas at throttle body.
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1986 FJ60
5.7 Vortec
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