Lift the car's backside, support it on jackstands, and take off the rear wheel. Loosen its lug nuts first, then lock the front wheels in place. Pull off the brake cable from the trailing arm by disconnecting two parking brake cable brackets. First unbolt the nut and pivot bolt linking the leading part of the trailing arm to the support bracket, then detach the final nut and bolt joining the trailing arm to the wheel knuckle. Drain the trailing arm, replace worn-out bushings with fresh ones by having a pro auto mechanic press them out and install at his shop. To put it back, follow the removal steps backward and tighten the bolts once the rear knuckle reaches proper ride height using a jack on the ground, before tightening the trailing arm bolts to the correct torque specification.