Tow Haul Mode
I have a F350 4x4 long box diesel. I always used tow haul when I towed our fifth wheel. We have now downsized to a tow behind TT. The friends we camp with have TT and they never use tow haul beca...
Forum Discussion
My 2015 diesel 2500HD Silverado locks out the highest (6th) gear when in tow/haul mode. I could get about 1 to 1.5 mpg more if I didn't use tow/haul, but I side with those of the opinion that it is easier on the transmission if I use tow/haul.
Interesting, our 2008 F250 with 5 speed is happy to go into 5th with tow/haul on so long as it's flat ground (climbing it will drop gears as needed). Doing a little search on the internet, it seems all over the place in terms if transmissions lock out the top gear in tow/haul.
Have yet to see a tow/haul that locks out the top gear on any brand or configuration of domestic truck, light or heavy duty.
I’ve owned, driven, or been assigned most every brand and model of new truck over the last 30 years.
