i have a 99 with the 4r100 and seem to have lost overdrive, shifts fine thru the rest of the gears but when it hits overdrive it just revs up, no engine light or overdrive light on the shifter flashing. fluid looks ok and dont smell burt, i got it home and parked it was going to take trans out tommorrow unless anyone has a suggestion on checking a solenoid or anything else kinda bummed 220000 on first trans and only 60000 on rebuild

 

if it revs it means it is shifting to overdrive just something inside is broken