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2023 GMC 1500 6.2L engine miss

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    • March 1, 2023 at 7:12 am #749326
      zxrj1
      Participant

      Does anyone else have a slight engine miss with your 2023 GMC 1500 refreshed? No check engine light, but i can feel it most of the time but not all of the time.

    • March 1, 2023 at 9:00 am #749348
      sdakolios01
      Participant

      Welcome to the wonderful world of DFM issues. Dynamic Fuel Management uses valve lifters to disable 4 cylinders in certain situations. I experienced rough performance, engine miss firing, and rough idle. On my 2020 6.2L one lifter failed at 8,800 miles. The result was a bent pushrod and the lifters on that bank were replaced with a new, more robust design. At 33,000 miles, a more dramatic failure that resulted in the lifters on the other bank all being replaced.
      You might want to search “GM DFM Issues” to determine if what you are experiencing aligns with DFM lifter failure.

    • March 1, 2023 at 5:35 pm #749479
      Ninja_Johnny
      Participant

      Do you know when it was built?

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