very informative...sometimes
This has been a very interesting thread for me. Thank you. I am comparing a 2010 denali XL with the 6.2 AWD and 75,000 miles to a 2012 suburban LTZ with the 5.3 4wd and 85,000 miles. Both are equipped with about the same options (minus the air ride of the denali), one is 4wd the other is AWD. They are both the same price ($28,000). It sound like the gas mileage is about the same in both, so why not have the power of the 6.2? The 6.2 in my 2010 silverado was getting about 14 in the city (never really getting the truck above 40mph) and 17 on the highway. Can I expect the same out of the AWD? The truck was a 4x4 that was leveled and had larger tires also. Because why leave it looking like everyone else's ?