still no 5th or 6th gears hot after repairs

[transe]

No, thermistor failures are VERY rare. I would suspect you have a wacky TCM, or that one of the TCM inputs is wacky.
Key points:
1. If the trans is simply doing exactly what the TCM commands it to do (as seen by Target Gear and TCC State on the scan tool), then the problem is NOT the trans.
2. If the TCM is not commanding the trans to shift (when it should), then they should look at the TCM data (throttle position, sump temp, ERS gear, etc.) to figure out WHY it's not commanding a shift.

 

[JonWilson]

well a follow up of what is happening with this truck,, Dealership did a reflash even though they said they couldn't see any issues and so far a week and a half and 800 miles later the trans is working perfectly so until something else happens I'm cautiously optimistic, Thank you for all the info and help along the way,, much appreciated

 

[Missouri Mule]

Some times the filter in the trans does get put on right and leaks. But it seems a reflash cured the problem.
Is scanner still reporting different speed then speedometer?
Just for the fun of it I down loaded a GPS speedometer to my phone. Every now and than I turn it on to see if my speedometer is correct. The first. Couple of times I used it Both trucks register two less mph then the speedometer. I used recently but had to update first and the GPS spd was the same as the mech speed.
That was recently after I was coming back from the market. Was running under low dark clouds and arms and legs started to come out of few. They were not spinning but living in Kansas for 11 years before moving South and they came out the South West and I could see clear sky's further in front of me I started to run hard. I was heading north east also but at a diffrent angle.