cyiworkmore, If those cracks are running in line with the rub rail and not are radiused almost as if they were about 5 to 10″ long, then something bumped it there. That is the most common on these areas and around the rear corners. There is nothing structural there. It could have been backed into a post, a tree, or something backed into it there. If it is impact, they will mound up as if round the horizon and the ends will run into, under or towards the rub rail. Though get your images and get in touch with your dealership. They will be the first step. BCB