2019 International LT625 transmission problem

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by tomasj4209, Mar 11, 2025.

  1. Mar 11, 2025 #1
    tomasj4209

    tomasj4209 Bobtail Member

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    Mar 11, 2025
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    I’m wondering why every once in a long awhile my transmission won’t go into gear, the check transmission light will come on
    And when I put it into reverse it will show the neutral (N) sign next to it or even when i put it in Drive
    Sometimes when let it set for 20-30 minutes and then it will work again
    So when I put it in manual I was able to shift gears
    But once I’d get to 8th a warning beeping would sound and wouldn’t let me shift into 9th or 10th
    But as soon as I switch it back into automatic it with go into 9th and 10th on its own
     
    Last edited: Mar 11, 2025
    tomasj4209, Mar 11, 2025
    tomasj4209, Mar 11, 2025
    #1
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  3. Mar 11, 2025 #2
    Heavyd

    Heavyd Road Train Member

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    Feb 4, 2009
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    Usually the transmission will keep spinning when the clutch is disengaged and won't come to a stop to allow the shift from neutral to drive or reverse. This is either a sticking or dragging clutch, or failed inertia brake. Be prepared to be doing a clutch, this is something common. Your next step is to get this scanned to see what faults are logging and diagnose from there.
     
    Heavyd, Mar 11, 2025
    Heavyd, Mar 11, 2025
    #2
    BoxCarKidd Thanks this.
  4. Jun 25, 2025 #3
    2025lupita

    2025lupita Bobtail Member

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    Jun 25, 2025
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    Did you ever find the solution to your problem? Mine is currently doing the exact same thing, is driving me insane.
     
    2025lupita, Jun 25, 2025
    2025lupita, Jun 25, 2025
    #3
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