Probably same issues as the Chicago area. Rust. I have still, an 03 durango 4x4 that looks and runs great at 175k mi. The eng is a 4.7, but I could take either eng as I can rebuild if needed. The 4x4's usually have the wide wheel opening flares that can hide the wheel opening rust in any of the 4 wheel openings of fenders. If you see rust-paint bubbling creeping out from under those body colored flares, the rust is probably real bad under there. One of the first rust areas is at the front fenders right above the bumper wraparound area. They rott there quick. Only real annoying failure is the flimsy easy break window track cable pivots whatever, that like to break mostly in winter when window is froze. Not sure if the 03 plenum gaskets were better than older either.