1xsculler

Is it likely that by changing my transmission fluid and filter that it will affect my problem of hard down shifts?

007_e350

If done right No -however, it does change the way truck drives little bit, but all in good

alx

a change of overdue atf results in smoother shifts.

however, most dealers will also reset tcu adaptations which might result in jerkier up/down shifts. if that is the case drive normally and transmission should smooth out in the next 300-500 miles. if it doesnt manual adaptations can be performed on the problematic shifts.