How does the tow haul shifter work out? I know it is a direct bolt on deal, but does it require any programming to work, or does it activate the tow haul mode as it should right our of the box?
Direct plug and play; no tuning required.
The PCM recognizes the input from the button and the PCM adjust the converter lock ups, line pressures and alters downshifts based on the brake pedal input. I'm almost certain it also locks the transmission from going into 6 gear too. I have not verified.......I started a new job.
Hope that helps. My gas mileage went down a bit because I like rev matched downshifts.....and the extra grunt off the line