Thanks everyone. I'm going to talk with the dealer right away about the wind noise and discuss the TSB you've posted here. Hopefully I can nip the bud off that problem right away. As for the mpg concern, I'll just keep an eye on that and keep my foot easy on the pedal. SierraOwner5.3...I see you are now in Virginia. My wife and road trip to the Outerbanks every other year for 3 weeks of surf fishing. Do you ever make it down that way? And if so, how does the Sierra do on the beach and in the sand? My bother had his Silverado out on Portsmouth Island and Ocracoke Island 2 years back. It did as well in the deep sand as our Jeep did. Nice truck, I think it was a 2005, it did great!