I bought a 04 D that has a rust spot right on the back tailgate, the auto body manager said they have had several where when the factory put the chrome on they chipped the paint and later it rusts. Then the service manager takes the picture and says he will send it to DC to see if they will approve it. He made it sound like they wouldnt because I bought it used even though it still has the 5/100k corrosion warranty and the remainder of the bumper to bumper. Any truth that buying it used invalidates the factory warranty. Great site btw...