"Bought this vehicle new in 2000, outfitted with AWD and a limited slip differential in the back. As I tow a small 14 foot boat and utility trailer I wanted something that could easily handle it and set the vehicle up to do so. In the first year I replaced the rear axle, transfer case. By the end of year two, I replaced the lower oil pan gasket, cooler line, water pump twice. All covered under warranty, By now, I have 110,000 miles and have replaced the rear axel bearings (not uncommon with this GMC axel), oil cooler line three times. Remainder of repairs (battery, tires, brakes) I expect at this mileage. I only tow about 15 times a year so the vehicle is not used to tow too much. This vehicle is pampered as it goes in every three months for oil change and all other maint. The inside and ride are outstanding, it does have the room to hold adults, cargo and it tows well. I have had no engine issues. The oil, cooler line is still an issue, only an incompetent designs a line that starts as hard tubing connects to rubber then back to hard tubing than back to rubber and then puts it on the bottom of a vehicle. The extreme temperatures we experience are sure to spell ruin for a line with that many compression fittings and it has. The line usually lasts about two years before it starts to leak. As I believe this may be part of the towing package,, it may not be relevant to ones that do not have that package. I did expected better in reliability(especially from the drivetrain) from a model that has been out this long."
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