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International Automotive Technicians Network
no more used ecms for GM J2534
Posted to Technical Discussion Forum on 3/28/2021 20 Replies

I keep forgetting and buying a subscription only to get an error when trying to program a ecm swap lately. the error code I got was "E4491: Reprogramming Error! Check all connections and reset Programming Interface! E4423: Unknown reprogramming error 5 at step... Login to read more.

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