The one thing I don't like about my new (used) f150 transmission (besides the shudder that Im going to have looked at) is that it always stays in high gear to increase fuel efficiency. I personally am unaffected by the price of gas, as I pass that on to my clients (lucky me i know). However, I can't charge them a new transmission. How do I enable tow mode on a 2019 f150? Will that modify the shift points so that I'm not in 10th gear going up a slight incline with a 4000lbs trailer? Thats probably why the damn thing shudders for me in the first place.