My car has the problem of no crank no start I bypassed the starter at the silinoid WI the a push button to start it and it starts but it turns off in about 3seconds that's why I'm thinking it's the n EU trap each switch but I can't find it
SECURITY light lt on the instrument cluster ? Anti-theft system problem . You would need to take the driver wheel off to get at the transmission side cover off . The neutral safety switch is part of the internal mode switch . inside the transmission . Do you know what a relay is ? Myself , i would check the crank relay . Check in your under hood fuse box . Watch this video , he is showing a horn circuit but the crank relay works the sameway . VEHICLE RELAYS Operation Diagnosis If you jump 30 & 87 the starter will engage and start the vehicle . Before you start replacing parts check out the starter circuit wiring diagram . The crank relay is computer controlled . http://www.bbbind.com/free_tsb.html Enter the vehicle info. year, make , model and engine size . Then under system click on engine , then under subsystem click on starting . Now check out the diagram . Truefully ,your best bet would be to take to a qualified repair shop or GM dealer .
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