tow haul button wires
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tow haul button wires
how does the button make the computer switch tunes? what im getting at is i want a to add a button so i can have a 2nd tune on my truck, and all i have is the computer, computer wiring, 5.3, and a 4l60e, nothing more from the newer pickup. can this be done or not.
clint
clint
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As far as I know the tow/haul button changes the shifting parameters only. Find the pinout on ls1tech and you will see the pin on the pcm that you will use. I have heard of a switchable tune (whole thing) in HPT, but I don't have the software or know how to do that.
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