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I have a 2004 grand am gt that was stuck in flood water and now wont start. Replaced the starter but it will only crank then nothing. What all should I be checking? Ignition switch? Could it have fried my ecm or PCM?
Did you remove every spark plug and spin the engine over to blow the water out?
Did you change the engine oil?
Did you test for spark at the plugs?
Did you do a fuel pressure test?
Did water get into the gas tank?
Was the engine hydraulically locked and you tried to start it?