Greetings! I have searched for posts but not found anything. I have a 2006 Denali which I am considering selling but I would prefer to keep it; I am concerned about the reliability at high mileage (I only have 85,000). How many miles do some of you have on your 2000-2006 Yukon's? I have the 6.0L engine and hope that the vehicle will last a long, long time but would appreciate hearing your experiences regarding longevity of the vehicle.