Pete,
I saw in a previous thread that you had permanently fixed the valve body problem in a 4L60E. Can you elaborate what kind of vehicle, cost and how you found the shop to do it? I have a 2000 Silverado 1500 z71 with 65k, fluid/filter changed every 15k, I never tow and have gone through 2 valve bodies already under warranty. I believe the dealer throws a new valve body it there that has the same problems.
TIA,
Derek