I think its great, BUT, I believe in Amsoil'* version. Which is even BETTER than the new Dexron VI. It is about $9 a qt, but you can run it longer and it keeps your transmission cooler, even under the most severe conditions.
Thanks for the reply guys. $9 is a little high for the amsoil stuff, considering I can get the dexron VI from gmpartsdirect for around $4 per qt.
From the link above, gm recommends purging the system of dexron III fluid. I was just going to drop the pan and replace the 7 or so qts that drain out. WIll the blend just reduce the benefits of dexron VI or should I really shot for a flush?