2019 detroit dt12, stuck in Neutral. No codes.

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by felin69, May 1, 2019.

  1. felin69

    felin69 Bobtail Member

    3
    0
    Jul 24, 2015
    0
    i ad a shifting bug with my dt12. i m doing some Northern Québec and Labrador hauling and at this time of year, part of the road is full of holes so the drive is kinda hard on mecanic. the transmission ad a shifting Failure and started to slip the speeds one after the other until it stucked to neutral. i ad a message in my UI dashbord that said " transmission starter blocked , unable to shift " .
    Now, Freightliner didnt find any troubleshooting code in the system.

    Anyone ad that kind of problem ?
     
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  3. dunchues

    dunchues Medium Load Member

    544
    956
    Mar 23, 2012
    new brunswick
    0
    I had exactly that in January. Bad road in Maritimes with ice breakup and torrential rain broke my inner wing and the engine and gearbox took a lot of water. Wouldn't shift into gear, same starter blocked code. I had to be towed into the dealer where they replaced the tcm, the shift controller and a circuit board on the bulkhead, plus the new inner wing ( and a clutch but that wasn't related it just made sense to do it with the box out) . Only took a day and warranty took care of the bill but it would have been a very expensive one. I really hope you've got warranty and if you haven't, I hope it's a completely unrelated problem!
     
    felin69 Thanks this.
  4. Tombstone69

    Tombstone69 Road Train Member

    1,010
    1,346
    Dec 20, 2018
    Jersey shore
    0
    Can you say, inertia brake. If it has one and it's bad the trans computer doesn't know to shift because the trans won't stop spinning.
     
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