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JBalman

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  1. JBalman
    Yes I have noticed the same issue with the lack of exhaust braking. Had a 2017 2500HD L5P and over a month ago traded for a 2020 3500HD drw. Love the new truck and the 10 speed Allison is amazing. But I miss the old exhaust brake function. This 20 just is not as effective. GM: What happened? Couldn’t the Allison be programmed to be more active with the downshifts to help increase the RPM?
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