First I'd like to thank you ALL for your help and imput

Had to take the truck to "The Man" aka tranz shop as it's my driver. Didn't want to just start replacing parts without knowing for sure what it was and time was not on my side.

Ended up it was the speed sensor and some corroded connections
There has to be some way to check this with a meter, no

Not too hateful so I had them do a fluid flush, filter change and adjust the bands while the pan was off.
By the way the pan was real clean inside so I was told

Thanks again all, Greg