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Thread: Looking for 2021 Silverado 5.3 10 speed file

  1. #1

    Looking for 2021 Silverado 5.3 10 speed file

    Would anyone happen to have a stock read file from a 2021 Silverado 5.3L? Looking to compare it to a file I pulled from a 2018 Silverado E92 ECM I have in the shop.

    Long story short, we are dropping the 2021 engine and trans into a C10 and want to use the E92 and T87A rather than the E90 and T93 for tuning reasons.

    I search the Tune repository but that only goes up to 2020.

    Thanks in advance to anyone willing to share.

  2. #2
    Advanced Tuner
    Join Date
    Aug 2016
    Posts
    386
    There's little different in the calibration between 2020 and 2021. But, not to shoot holes in your project, but I don't think using an E92 is going to work, for a few reasons:

    1. The L84 (2019+ 5.3L truck engine) uses a LIN based airflow sensor. The E92 doesn't have software support for this sensor

    2. The L84 uses DFM, not AFM. The E92 can't control the DFM system. You didn't say whether you have an L84 or an L82 - if it's an L82, you might be OK

    3. The L84 uses a different high pressure DI pump than earlier models

    These aren't insurmountable obstacles - for the first, you would need to source the correct engine harness, for the second, you'd have to "delete" the AFM system, and for the third, you may have to swap a fuel pump from an earlier engine, or try copying the DI pump calibration out of the 2020 tune in the repository.

    Good luck