GM 15948005
Coil Spring, Rear

Carriers must first raise the vehicle to an appropriate height with suitable lifting equipment before starting rear coil spring replacement work. Before proceeding with the installation, place the rear axle support and then untighten the shock absorber lower bolts. Maintain the rear axle at an appropriate height to dodge any potential frame-contact related damage to the upper control arms. Handle Coil Springs with care when lowering the rear axle because rough contact can scratch or chip the protective layer resulting in early spring breakdown. After coil spring removal from the rear position install your new Coil Springs along with the rear axle raising procedure. Secure lower shock absorber mounting bolts with torque of 85 nm (63 lb ft). Lower the vehicle while removing its rear axle support.

Vehicle owners should start by supporting the vehicle while raising it then install the rear axle support. Proceed by eliminating the shock absorber lower mounting bolts while keeping the rear axle from reaching the frame contact point to prevent damage on the upper control arms. Handle the Coil Springs with extreme caution when lowering the rear axle because rough handling will result in coating damage which causes early component failure. Proceed by taking out the rear Coil Springs next. Place the new rear Coil Springs into position and lift the rear axle. Fasten the shock absorber lower mounting bolts to 85 n.m (63 lb ft) of torque. The final step involves taking the rear axle support off and then lowering the vehicle.

Place the coil spring and upper mounting plate onto the Strut Spring Compressor (J45400), compress the coil spring, and install the shock absorber to the shock module.

Install the shock module yoke to the lower control arm.

Place the new rear coil springs, raise the rear axle, and install the shock absorber lower mounting bolts, tightening them to 80 Nm (59 ft. lbs.).

Install the shock absorber to the shock module and secure it with the retaining nut tightened to 45 N.m (33 lb ft).

Do not lower the rear axle to the point where the upper control arms contact the frame, as this could damage them.

Install the shock absorber assembly in the vehicle, attach the shock module yoke to the shock absorber bolt, reinstall the tire and wheel, and lower the vehicle.

Place the new rear coil springs in position and raise the rear axle.