Start a replacement of the rear door exterior handle by initially dismantling the trim panel followed by pulling back the water deflector when necessary. The first step involves disassembling the lock cylinder rod from the rod clip followed by removing both outside handle nuts and after that the outside handle. The replacement procedure requires one to disconnect electrical connectors and to extract the combination of
Door Lock Cylinder and actuator cable. The lock cylinder repair requires binding procedures when needed or new cylinder installation demands proper coding. Install the new lock cylinder by applying gm p/n 12345120 (Canadian P/N 726548) lubricant inside the lock case as well as the keyway of the cylinder. After the electrical connector you should reattach it if needed before installing the Door Lock Cylinder along with the actuator cable. The handle assembly requires installation while maintaining outside handle mounting nuts at 9 n.m (80 lb in) torque. Before finishing up, attach the lock cylinder rod to the rod clip followed by reinserting the water deflector when needed and returning the trim panel.