DT12 Transmission quuestion

Discussion in 'Freightliner Forum' started by koolaid6666, Dec 19, 2023.

  1. koolaid6666

    koolaid6666 Bobtail Member

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    Oct 10, 2019
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    Can you change shift perimeters for a DT12 transmission in DDDL 8.17. Transmission always goes to 1st gear to start don't pull heavy loads and want to put it in performance mod. I have done it with a ultra-shift in service ranger but it doesn't recognize the dt12
     
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  3. KDHCryo

    KDHCryo Medium Load Member

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    Sep 14, 2023
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    While at the stoplight you can always paddle up and down to select the correct gear for your situation, no need for software changes.
     
  4. koolaid6666

    koolaid6666 Bobtail Member

    17
    0
    Oct 10, 2019
    0
    Yeah no doubt. I drove the same truck and it had performance mode, shifted so much better and started in 3rd. I,m going to try software I was just trying to confirm it could be done in dddl before I get it.
     
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