94CutlassXtreme Posted February 9, 2007 Report Share Posted February 9, 2007 I was told there are 7 wires which provide power for the ECM in the 3100. Does the ECM have its own fuse or fuses? Also, would a bad ignition switch not allow the ECM to power up if it doesnt see the resistor in the key? Has anyone else ever had a car die due to the ECM not powering up? I have no engine light with the key on engine off. Anyone? Quote Link to comment Share on other sites More sharing options...
slick Posted February 9, 2007 Report Share Posted February 9, 2007 There should be an ECM fuse, atleast in every gm vehicle i've had to check fuses on there is one. Quote Link to comment Share on other sites More sharing options...
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