5.3 or 6 Liter Engine
Looking at GMC Yukon Denali XL - 2002-2006. They have a 5.3 or 6.0 liter engine. I don't do much towing. Am I going to get a lot worse gas mileage out of the 6.0? Is my best bet the 5.3? AWD vs 4WD - do I lose a lot on gas mileage there, too? Is 4x4 still better for longevity than AWD?