dave, if u mean still maintaining throttle in gear 3 then shifting to OD-still on throttle-no i havent to see if the tcc applies in 4th gear. i always thought manually shifting was bad and if doing so let off the throttle, shift, then apply throttle again? i was on and off the throttle to see if the TCC at some random point would enage and towards the end it did. i forgot to add in the parameters in the powertuner for current gear indicator. last night when i was leaving and geting onto the highway it was fine, getting off the highway it was also working/engaging but i did not scan. i'll see if i can get another scan later today.