Ok guys, once again. Downshifting a trans does not change the gear ratios in the trans. The final drive effectively changes each gear ratio by physics. Each gear is more usable with a heavier load and a lower gear ratio. And tow haul does not change the stall speed of the torque converter. That is a fixed speed buoy into different converters. Tow haul will hold each gear longer and hold it in a lower gear on a down grade. But again lower gears will only help all the above when towing a larger (heavier) trailer.
