I changed my fuel pumps last summer after car was started after sitting 5 years.
It started, left it idle for 15 mins, car died. It appeared as empty on gas gauge, so put in some fuel, car would not start, not fire.
Decided to change fuel pumps. I found one pump at auto parts store, and one pump for a older gmc suburban 454 fuel injected, from GM store.
Both pumps seemed to be a close match and cheaper price, so installed them and fuel filter .
Car is NO START, no fire, but has the 50 lbs pressure to top of engine.
Checked spark plugs, they seemed a bit weak for spark, but they all working.
Car will Not Start.
I had a mechanic friend work on the car, bypassed the VATS system using a GM "VATS INTERAGATOR" tool I have, and we run a expensive scan tool, could not find any codes.
I even swapped the ECM out with my other matching LT5, but No Start.
I don't know where to go at this point.
Any HELP out there ?
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