Whats problems to expect?

hello, i am currently in the market for a chevy Avalanche between the years of 2006-2010 and was wonder before i bought the truck what are some problems that may occur in the future. I was also hoping that you guys could give me some feed back on the truck like if its a good driver, comfortable, average mpg, etc...
Thank you.

Welcome to AF. X Long Islander here. Seems most online reviews put this truck in a pretty good light , general maintenance, mileage, lack body or frame rust are all viable considerations.