all other shifts are normal,, it does not try to shift at all and does not slip at all, it shifted into od before the tccs swap just no lock up when we test drove it no 4th gear ,,,, dont know what could have happened,, i pulled the pan the other day and swapped wires in pressure switch,,, no help,,, i tried tranny mike but no help there,,,,i am about to go crazy aand trans fluid aint cheap so,,,,, any ideas thanks ccc for your time,,,,,,