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Serv # 12672537
Will I need to have the ECM and tcm from 8l90 matches up or just have the ECM setup for what I am running?
Thanks

That service number looks like a 15-16 ECU. That will not work with a 3 wire fuel rail pressure sensor.
Its always best to get the TCM that was mated to the transmission. The 8 speed is a pain in the butt because the TCM has to be programed with the solenoid pack info.

 

[Conquistador]

Hey Guys, So, I'm trying to figure out what year of Gen V engine I have. I know it a 6.2 with an 8l90 and a 3 wire fuel sensor. I need to know the year as I think the guy I bought it from gave me the wrong ECM. The engine etched code is 1K*THG279910.
Appreciate any assistance.

1K*THG279910
The last 8 digits of this are the last 8 of the vin. H in this case would be in the 10th position of the complete vin.
H = 2017

 

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1K*THG279910
The last 8 digits of this are the last 8 of the vin. H in this case would be in the 10th position of the complete vin.
H = 2017

Looks like you will need a 2017 E92 ECU. look for service #12674052. I would find a used one that is already programed for the same engine as yours (5.3 - 6.2) or we have some in stock that we can sell you.