Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
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what year and make and model and engine size is this ?
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Ok, what exactly do you need? The wire color or voltage?
Is this a Base, LS, or LT submodel?
Most cars have a 5v reference. If you have a code I can look up specifically what the voltage should be
One way you can find out is to cut the wire at the ECM and test it with key on engine off. Sometimes wires can develop high resistance and drop the voltage down to what you are seeing. Is the reading you got with the connector unplugged?
Good morning, did you cut the wire at the PCM and then check it?