I don't have a scanner. May take it to the dealer that did my gas tank leak as they really did a fast and good job. If i am gonna have trans problems i just as well buy a C7 with the A8. They say the new fluid should fix all the probs they have had. I just don't buy that and that is the only reason i don't buy a used C7.

this is a good read in reference to the evolution of these transmissions and why you need to have it read with a GM scan tool.

https://www.motor.com/magazine-summa...ion-diagnosis/

Interesting reading, and further proof, to me, that I need to keep my fat fingers out of that little bit of magic in an aluminum case.
Andy