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International Automotive Technicians Network
Re: No Com with the TCM
Posted to Transmission Forum on 6/3/2024 4 Replies

in certain cases I have seen when the firmware in the tcm is not matching the vin application required by the ECM or the cluster for example also in GM 6t7e newer models if you swap tcm from used unit yes trans will still show no communication with TCM or eng... Login to read more.

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