I work in a GMC Buick dealer and from what I see coming in frequently, I would stay far away from any of those 3.0 trucks. They are extremely difficult to work on requiring cab removal for most turbo, valve cover , EGR cooler repairs. The coolant control valve has been a constant source of trouble since that truck came out.The emission controls are another constant headache. Lets not forget about the transmission issues. Only you can decide if the fuel economy is worth the headaches and inconvenience. Also would not own one out of warranty.