I work for a GM dealership (yeah, I know) and just flushed my 04 GT-A today with our new ATF, Dexron VI and wow, what a difference. My old ATF looked like chocolate milk so maybe that's why...

Anyone who has access to this fluid should consider it, it's almost fully synthetic and really cleaned up my lazy shift from 2-3! Now let's see how it deals with 7k rpm

The flush was very easy, only one hose and voila! Done. Noticed the take-off is improved as well and doesn't do that weird lock-on lock-off in third anymore! Nice

-D