99' Truck PCM which pin is TOW/HAUL?
07-29-2012, 02:29 PM
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Join Date: Nov 2011
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blue pcm connector, pin 71.
supply momentary ground to activate tow haul. supply ground again to deactivate. when motor is turned off, it will revert back to normal.
the pcm has to be programmed for this to work
supply momentary ground to activate tow haul. supply ground again to deactivate. when motor is turned off, it will revert back to normal.
the pcm has to be programmed for this to work
