newest reflash? tranz shifting differant?

[1tonpower]

ill give more details later but is anyone having issues with shifting after the update. its almost like the truck de-fuels on the up shift. it only does it when i go wide open from a rolling speed..

im going to try and get it to do it so i can exsplain it better..

[1tonpower]

fluid level and temps are normal

[Scottbigred]

Im having the same issue, it will take off and all of the sudden it feels like its defueling then takes off hard again.

[1tonpower]

Glad I'm not the only one.

[1tonpower]

this is a dead horse...anyone else with problem like this

[kenwortht800]

I bought my 2010, used with 27k, from the dealer on sept 22. Not sure if I would have the newest flash. Once in a while the truck feels like it defuels HARD, It only seems to do it when I really roll into the throttle. Not during WOT, or light throttle.
Could just be my imagination, but it really seems to do it when its shifting from second to third.
I thought it was just the way these trucks drove.

[deamsphelps]

Mine does it a sometimes and I don't have the latest reflash. For what it's worth, I test drove a used V10 with very low miles before I bought my 6.4 and it did the same thing.