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2025 Denali Ultimate Duramax 10 speed Allison

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    • June 3, 2025 at 10:39 am #866822
      jrverdegaal
      Participant

      There is not a spin on transmission filter, can this be true and why did they remove it

    • June 5, 2025 at 3:22 pm #867304
      mjm1957
      Participant

      That’s not a real Allison . Do some research.

    • June 9, 2025 at 10:08 am #867635
      jrverdegaal
      Participant

      You mean my 2025 Denali Ultimate is not real, its the transmission that came with the truck. I mean I now its not a true allison but it still lacks the spin on filter, is that the way it is manufactured now

    • June 9, 2025 at 2:40 pm #867674
      mjm1957
      Participant

      The only serviceable filter is in the pan on that transmission. You will probably need a valve body soon anyway and can have it changed then.

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