I am considering the option of buying a new truck (upgrading over my '94 F-150) and I just looked at this one. It is a 2001, Chevy Silverado 1500HD, Crew Cab 4X4. Has the 6.0 Gas Engine and 97,000 miles on it. My questions are, what is the difference in a 1500 and a 1500 HD? What is the difference in a 1500HD and a 2500? I am currently towing about 5500 - 6000 lbs regularly and my F-150 is wearing out. I know that this truck can handle it, but what are the max limit tow capacities of this truck. Can it support hauling a skid steer? I really want an F-250 PSD, but I cannot put out that much cash right now for one in good enough shape to justify the purchase. Keep in mind that this would be a work truck and a personnal please truck for our family. Also, does anyone have one of these trucks and what kind of mileage do you get? Do you kow how the rearend is geared in this truck? I am looking for specs now. Thanks for your opinions.