"Gut" still tells me you are dealing with a drivability issue. When there is a transmission problem, they don't magically and temporally "cure" themselves off and on like that.

How many miles on this truck?

Allan

 

No codes except for when i ride for a little while after the trans kicks out. Truck runs about 2800rpms for a period of time it gives me a knock sensor code. Fluid is full and clean.

 

Yea like i drove it to work yesterday and it didnt kick out once. ran 70mph for about 10 miles. Soon as i got on the interstate to come home after about a half mile it kicked out. And like i said if i drive under 60mph it does what its supposed to do, kicks in and out fine...all the time. Truck has 130,000 miles on it.