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Codes for cylinder 1,3,5,7 test failure after new ecu in my 07 tahoe
I just replaced the ecu in my 07 tahoe and it will start right up but has rough idle. Zeus shows codes for cylinder 1,3,5,7 test failure. Is this because it still needs the crankshaft variation relearn or could it be something else? Yes the new ecu has the same part number as the old one and has...- tashalynn82
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- Forum: Performance
