DT 12 TRANSMISSION PROBLEMS IN 2015 CASCADIA

Discussion in 'Ask An Owner Operator' started by bayhauler.fj, Nov 13, 2020.

  1. bayhauler.fj

    bayhauler.fj Bobtail Member

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    Please help me out here. My 2015 Cascadia with a DT12 tranny is having issues shifting up or down.
    Seems like the engine brake is on but it acts or feels like the engine brake is on.
    It also makes the sound like the engine brake is on. The sound gets louder the higher the gear moves up.
    Please comment if you guys had any issues withDT12 trannies.
    Mechanic can't figure it out as there is no check engine light on.
     
    bayhauler.fj, Nov 13, 2020
    #1