GM 15956498 Rear Spring Assembly

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To remove and replace the leaf springs on a vehicle, start by raising the rear of the vehicle and supporting it securely on jack stands. Block the front wheels to prevent the vehicle from rolling off the stands. Use a floor jack to support the axle and raise it slightly to relieve tension on the leaf springs. Remove the four U-bolt nuts and washers, followed by the anchor plate and U-bolts with spacer. Remove the nut from the front spring-mount bolt. Raise the axle slightly off the springs with the floor jack, ensuring it remains stable throughout the process. If the spring will be removed for an extended period, support the axle with jack stands. With an assistant supporting the rear of the spring, remove the shackle-to-frame bracket nut, washers, and bolt, then lower the rear of the spring to the ground. With an assistant supporting the front of the spring, remove the front spring-mount bolt and remove the spring assembly from the vehicle. To reinstall, reverse the removal steps, gradually tightening the U-bolt nuts in a criss-cross pattern and then tightening all fasteners to the specified torque. If the bushings at the ends of the spring are worn or deteriorated, they can be pressed out and replaced with new ones.

With an assistant supporting the rear of the spring, remove the shackle-to-frame bracket nut, washers, and bolt, then lower the rear of the spring to the ground.