I have owned my Yukon for 3 years and 30,000 miles. I love the power, handling and comfort this vehicle offers. I have had to do only regular maintenance which usually includes the front hubs at around 100,000 miles. This thing fits 4 foot by 8 ft sheets of plywood inside and is still is capable of 19 mpg on the highway!I average 16 overall with mostly rural driving in the mountains. This vehicle is just as well built and reliable as my Honda Accord!
5.3L engine has plenty of power(you don't notice you have 7 people and all their stuff when you press the gas.) Never running out of room. Not having to go through dealer for parts. 600 miles between fill ups(32.5 gallon tank). Turns tighter than my Accord and easier to park.