Anyone out there had this problem. My tranny does not want to shift from 2nd to 3rd unless I run the rpm's up to 3k, then let off of the go pedal. Also sometimes it takes off in 2nd. Manually shifting sometimes works better. I had the fluid and filter changed, and bands adjusted 10k ago. Fluid level is good.I have 150k on this truck. And just wondering could this be a sensor or something simple or is it time for a rebuild?I did an APPS reset but no help I also have no codes with the key on, off, on, off, on trick.Any help would be appreciated, thanks in advance.

 

govoner pressure sensor/solenoid u can find it on ebay for 80-$100