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International Automotive Technicians Network
Re: USED ECMs - Reflashing - 12' Colorado
Posted to Technical Discussion Forum on 2/22/2023


I have successfully reflashed used ECM's for GM cars using the acdelcoTDS website however I am not sure about later models. The website should tell you once you input VIN. If you have a exact # replacement ecm you might try just changing the vin#... Login to read more.