Replaced intake manifold gasket, $250.00. Other than that excellent vehicle, 18 mpg highway cruise at 65, in town well it's a V8. Superb ride comfort, turning radius is incredible for a big truck. Interior noise or lack of is excellent at 70mph plus. Wife loves driving it, big and safe, engine runs excellent. I bought it with 55K on it figuring it would be done at 100K, I have no doubt it will go to 150K and beyond. Parts everywhere for these and their isn't a mechanic who can't work on them if needed. Just a great roomy vehicle, that makes an American proud to pull up to the pump.
Room comfort interior noise(none) turning radius. Safety and reliability wouldn't hesitate to buy one with 100K.
Stand behind known intake manifold gasket issue. If you need this repair shop around local shops can do it blind folded. No reason to pay more than $300 for it.