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  1. 01-04.5 LB7 Duramax Powertrain
    I have an 01 with a po380 code. When I test the wire from the ecm, it has power but, there is no power from the glow plug wire terminal on the controller. Doesn't this indicate a bad relay? Also, the power from the ecm stays on long after the "wait to start" light goes out. Is this normal? I am...
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