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  1. M

    Knocking noise

    I will try in a day or so just got back to email about truck from the holidays Sorry for being slow
  2. M

    Knocking noise

    I have tried to attach a video but i can not get the video from phone to laptop without it saying it does not have encoding setup so it want play on my computer or download to the conversation if anyone has a suggestion for this also im open thanks for help
  3. M

    Knocking noise

    Motor Ops Easy Link Light Tow 4"exhaust all the way Could this be an exhaust leak there is a couple of sections that show a little bit of carbon buildup at the section joints
  4. M

    Knocking noise

    nox sensor codes sound comes from under hood
  5. M

    Knocking noise

    codes were for nox sensors sound from under hood sounds like
  6. M

    Knocking noise

    i have a 2018 duramax 150,000 miles i have owned truck for 3 years purchased used and it coded the first day i had it def deleted and after delete started hearing a knocking noise when traveling down interstate and reduce speed by just getting off the accelerator and coasting the engine will...
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