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Thread: Tow/Haul mode?

  1. #1
    Lifetime Member N0DIH's Avatar
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    Default Tow/Haul mode?

    How do I wire up a switch on the economy/normal shift tables so I can setup a Tow/Haul mode?

    Anyone know the pinout for it? Did any cars/trucks with this VCM use it?

  2. #2
    Lifetime Member ChipsByAl's Avatar
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    what kind of vehicle are you doing this on? There is a D3601 box to enable it . There are several ways to choose the shift pattern D0409 with what pin and how it is activated is explained in the description.
    AL
    "Trash that carb and get Injected!"

  3. #3
    Lifetime Member N0DIH's Avatar
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    I have a 99 K2500 454 Suburban that could benefit from it nicely.

    It seems there is an economy and normal shift tables, but how do I trigger it?

    I would also like to do it on a 98 Suburban K1500 350 too.

  4. #4
    EFILive Reseller wait4me's Avatar
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    Yes it works, you just have to fill in tons of tables. then just run a ground to a switch and the pcm imput.
    "If you can leave a black mark on the pavement, from the exit of one corner to the braking point of the next one, you have enough horsepower."

  5. #5
    Lifetime Member N0DIH's Avatar
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    What PCM pin do I need to ground?

  6. #6
    Lifetime Member N0DIH's Avatar
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    Anyone know what pin I need to ground to activate the alternate shift tables?

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