I have an '04. I wish I had a dealer in Las Vegas that would do it that cheap. At 47k I went to my oil change place and had the coolant flushed (very important, or so I am told) Auto tranny fluid changed, oil changed, for $210. next time I need an oil change I will get front end transfercase, rearend fluid change. They quoted me $2500 to $3000 at the GMC Dealer for a 40000 mi maintenance depending on whether they found anything to fix, or if I wanted a car wash.