What does this code mean on an impala?
what does this code mean?
u0100-00
349809
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@jhowell252 that code means Lost Communication With Engine Control Module
Causes for that can be:
Faulty Engine Control Module (ECM)
ECM harness is open or shorted
ECM circuit poor electrical connection
You will find a service bulletin for that code on here. Chevrolet Impala is not listed in this bulletin but the error and the repair should still be the same.
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