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returning truck to stock - mainly ecu?
Long story short i have a poorly performing 6 litre swap in a 08 yukon, i purchased it, i didnt do any of the work on it. I want to pull out the 6 litre 4l80e combo and swap in a stock 5.3/4l60e and just use it as a driver. Who to use for the ecm change back to stock? Will a dealer touch it, can a hot rod shop reflash it? I cant find my info on who did the tune in it now. Might just be easier to part out instead of dealing with the problems. Anyone got any insight?
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