Personally I would just order a remanufactured Transmission and have my local shop swap it in or do it myself for a lot less money. Why would you waste $1,420.00 on a diagnosis for a 7 year old vehicles transmission? The dang thing is shot swap it out and move on.What is your typical turn around for doing all that on a 4L60E? I could bring a transmission to you and kill time in LV during the wait time, depending.
If the Silverton is still in business, I liked that casino when I lived there for 9 months. Is attached at the Bass Pro Shop, or at least it was.