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Hey there! Can you post the connections to do it please? Right now I have 2 of this ECMs, and mostl likely one of them is NEW. The other one is a job but need to read it and I cant

Yes 6L90 2013 to 6L80 2016 I think. Yes changed the VIN. But has different OS not compatible with the ECM.

Only code is lost communication with ECM.
There is a list that EFILIVE is compatible...

Does anybody have a read of the T43 24265260 OS?

Thanks again!

Hello there! How are you doing?
So I changed the transmission hoping to get it working just by changing the VIN... did not work... so after a lot of reading I discovered that I need to find a...