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Flashing all modules to match on l86 swap.

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I have a 2017 suburban that I put the complete motor Trans and all modules from a 2015 escalade in, I want to know if anyone knows how I can flash everything to get the Vin to match my Vin when I try with hp tuners it won't let me because of the difference in year models. A push in the right direction would be greatly appreciated.

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