My 05 tundra downshifts going down hills when you touch brake pedal. It's only a 5 speed automatic.
Toyo dealers like to push a trans flush, don't do it. Drop pan, change filter, and add fluid. Also their WS trans fluid is not good for 100k miles.
I left the quarry with a load of AG lime in a 2 ton dump trailer with my 05, all total, 15,000 pounds. I pulled it out there in the rain too, with 4wd and AT tires. Even their loader couldn't get traction.
