Hinging On Access For Success Schley Products recently unveiled the GM Door Hinge Bushing Installer to facilitate the installation of replacement silicon bronze bushings on GM door hinges, such as those on select S10s, Sonomas, 1/2 and 3/4-ton trucks, Blazers, Suburbans, Tahoes, Avalanches, etc. According to the company, in usage, the restricted area of the hinge is inaccessible for a straight and true installation of bushings. This specialty tool allows easy access to install bushings, and accurately guides and holds bushings in place while you tap them with a hammer or squeeze them with pliers.