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Thread: Tow haul mode

  1. #1
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    Default Tow haul mode

    Can the scanner be used to tell if the transmission is in tow haul mode? trying to diag if its the switch on the shifter or a bulb issue in the dash.


    Thanks
    Kyle

  2. #2
    Lifetime Member Move'n Up's Avatar
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    As long as that's a PID that can be viewed.
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  3. #3
    Lifetime Member Chavez91's Avatar
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    Quote Originally Posted by cyipher View Post
    Can the scanner be used to tell if the transmission is in tow haul mode? trying to diag if its the switch on the shifter or a bulb issue in the dash.


    Thanks
    Kyle
    IIRC, Log 'Transmission State 07'

    There should be one called Trailering/Hauling Shift Pattern

    Another that might work is 'Transmission State 08'

    Secondary Shift Schedule (input)

    I dont remember exactly, but atleast one of those should trigger with the tow haul button.
    Josh
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    Lifetime Member THEFERMANATOR's Avatar
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    Quote Originally Posted by Chavez91 View Post
    IIRC, Log 'Transmission State 07'

    There should be one called Trailering/Hauling Shift Pattern

    Another that might work is 'Transmission State 08'

    Secondary Shift Schedule (input)

    I dont remember exactly, but atleast one of those should trigger with the tow haul button.
    Theres actually 2 pids that change when in tow/haul mode. I don't remember which one it was, I just know I logged all of the transmissions state pid's, and there was 2 that changed when it actually went into tow/haul mode. I found this out after I ran a TCM from a tuner who said he put tow/haul on a toggle switch for me. It changed the secondary shift schedule pid, but not another one, and it never left normal shift mode other than it changed to a different a adapt set when the toggle switch was on. Wish I could remember more, but it's been almost 8 years now since I was trying to figure that out.
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