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  1. Duramax Sixth Generation: 2017-2019 (L5P)
    Hey guys, I’m new here and I’m looking for info. I have a 2018 L5P and It has custom tuning and has for the last 2+ years and 25k+ miles, I was driving the other day and it went into limp mode, it’s throwing 3 codes P0046 U18A2 & U0076. I have the can bus dummy plug and nox sensor plugs on the...
    p0046 u0076 u18a2
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