Thanks again B.
I swear GMC pickups just last forever... I had a buddy with 250k miles all stock, manual tranny, and that thing just ran over everything... *sigh* wish these cars would be built that robust
I'll start prepping to buy the fluid.. just so you know I have read those DIY's but it almost turns out to be a debate as to what fluid to get. Having said that, I have noticed two things:
1) The fluid is Dexron-VI (8 quarts as you said)
2) The fluid is dark-brown rather than the usual red ATF
I'll do a little more research and see if my dealer carries it, I really would love to stick to OEM if possible. It's funny though, I have read more discussion about what ATF to use than what engine oil, gasoline, and differential fluid to use all combined. lol