Detroit DT12 shifting problems

My transmission revs up between even to odd gear shifts, 4-5, 6-7, 8-9,-10-11. It downshifts just fine. I have changed from econ. mode to performance mode and even manuel mode with no difference. I notice if i let off the fuel just before it shifts, it will not rev up. I have had the split pin issue fixed twice and have the clutch replaced at about 500000 miles when they had it out for last split pin issue. Has anybody experienced the same problems? If so, what did it take to fix it. Thanks

 

No, haven't resolved it yet. Still searching for answers before I take it to stealership.

 

My transmission shifted ok for a while also then started doing it again. My next check will be to check TCM wiring harness along with pins to make sure no corrosion. Will let you know if I find something. Will be a few days.

 

No, not yet. Trying to look

No, not yet. Trying to review DT12 service Manuel and find a DT12 wiring diagram. I'm not been in big hurry because I'm semi retired and truck drives ok.