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  1. Duramax Sixth Generation: 2017-2019 (L5P)
    2017 Duramax here, 70K miles and got a couple codes, mainly P2463, soot accumulation in DPF. It's run hard but no towing, it's used for mail delivery in Eastern CO., daily 140 miles 6 days/ week. I have long runs of probably 25 miles without a stop. The pickup has done multiple natural regens...
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