WHAT IS THE ENGINE LIFE (MILEAGE) ON 2003-PRESENT SUBURBANS OR YUKON XL'S ?
as long as u keep the coolant & oil constantly flowing without severe degradation, it should last to 200-300k miles.
I don;t know...I have a 2000 GMC Yukon with 365k miles on it and never had the engine or transmission worked on. I just go back from a cross country trip. Uses about 1 qt of oil every 1000 miles, really not much more than the day I bought it new, I talked to dealer about life and was told 400k miles is fairly common and 600k miles is not unheard of
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