Use a small open-end wrench to unscrew the antenna mast from the body. Next, unscrew the antenna upper mounting nut, utilizing special sockets available at most auto parts stores, or a pair of needle-nose or snap-ring pliers, taking care not to scratch the paint. Working inside the fender, detach the liner and disconnect the antenna lead from the base of the antenna body. Remove the mounting bolt that secures the antenna body to the rear quarter panel, then withdraw the antenna body from the rear quarter panel. Installation is the reverse of removal.