My truck turns over then shuts off when attempting to start.
I changed my fuel pump, mass air flow sensor, and tried the
GM IMMOBILIZER BYPASS steps. I checked the relays amd
fuses and I even shimmed the ignition wires like I saw on
youtube. None of these ideas fixed the issues. Any ideas?
With my Ford E250 turned out to be faulty ground wire to fuel pump. We figured this out after we also replaced fuel pump and still problem occured once in a while.