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  1. March 8th, 2024 #1
    ls2trailblazer
    ls2trailblazer is offline
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    Default Updated 2021/2022 4500 Cab Chassis

    I have a 2022 4500 Cab Chassis that I’m working on. Truck has already been ECM swapped with a 2021 ECM and tuned. Unfortunately the dash looks like a Christmas tree and sometimes the truck goes into limp mode when towing heavy. I’ve read online that the ECM needs cloned before swapping, but I don’t know if they did that. I’ve also read that the cab chassis are a bit different. Does anyone have any suggestions?
    Last edited by ls2trailblazer; March 10th, 2024 at 02:29 AM.
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