Aggressive downshifts in tow haul

[2020Tremor]

mine downshifted to redline a couple times when towing 10k-11k, it seemed to happen when I pressed the brake pedal farther down and also more sharply. It suprised me and like you, I did not like the rpm's up near redline. my solution was to just drop the gears down manually and be easy on the brake pedal, staying in tow/haul mode. I would also give the brakes a jab when I wanted the transmission to drop a couple gears ( so I wasnt mr. brake happy.)

maybe easing onto the brakes more may keep from the aggresive downshifts, I'd assume that stomping on the brakes with any weight trailer in tow/haul mode would take it up to redline?

I am going to have to try playing with how I have been braking to see if that is why down shifting seemed to work so well. A little short break pressure caused enough for just a slight downshift to keep me where I wanted to be on speed. Coming from the 8.1L with the 4 speed down shifting is nonexistent without driver intervention.

 

[thevol]

I am going to have to try playing with how I have been braking to see if that is why down shifting seemed to work so well. A little short break pressure caused enough for just a slight downshift to keep me where I wanted to be on speed. Coming from the 8.1L with the 4 speed down shifting is nonexistent without driver intervention.

Yeah I came from an old 4 speed trans in the Cummins so this 10 speed is quite a change. I've also never had a truck that would auto downshift to engine brake. It is interesting because once it is in that 5k rpm engine braking condition you have to throttle it out or it thinks you want to keep on with the engine braking.. It also takes a second or two for it to upshift while you are throttling out at over 5k rpm. Dunno just seems strange to me, I am going to mess around with it so I can understand how it works better. Problem is its only on very steep declines so I dont get many opportunities to play around with it. I have read some threads about the F150 acting simliar with their 10speed, which probably has similar programming logic, but those engines are much smaller and likely need the high RPM to engine brake more.