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  1. C

    2025 Tahoe 6.2-liter Z71 engine light flashing, stuttering engine

    It is "cylinder 4," whatever that is. They removed and relocated the spark plug, coil and plug wire to different cylinders. Then test drove it and found that it stayed on cylinder 4. They did some other stuff like inspecting lifters and camshaft and valves. The "valve sets" were not sealing...
  2. C

    2025 Tahoe 6.2-liter Z71 engine light flashing, stuttering engine

    I don’t know. They said it was same one but I’m not confident they did much.
  3. C

    2025 Tahoe 6.2-liter Z71 engine light flashing, stuttering engine

    They’ve said it was a coil and a bad seal and spark plug. None of that has fixed it. I’m wondering if there is some factory flaw in the new models.
  4. C

    2025 Tahoe 6.2-liter Z71 engine light flashing, stuttering engine

    Yes. I bought it in another city and am returning there to that dealer.
  5. C

    2025 Tahoe 6.2-liter Z71 engine light flashing, stuttering engine

    Thank you so much.
  6. C

    2025 Tahoe 6.2-liter Z71 engine light flashing, stuttering engine

    My 2025 Tahoe Z71 6.2-liter had less than 700 miles on it when the engine light started flashing and the engine stuttered/fluttered/hiccups at any speed. This is an intermittent problem. The dealership has twice tried remedy this by checking which cylinder is misfiring, but each time I've gotten...

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