GM 19257874 Front Suspension Strut Assembly

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The strut and spring assembly should be removed by mounting the strut clevis bracket portion in a vise.

Be careful not to damage the brake hose or overextend the inner CV joint.

To remove the strut, start by moving the side trim in the trunk compartment to expose the strut upper mounting fasteners. Loosen the mounting fasteners without removing them and pull off the rubber cap on top of the strut if it is equipped. Loosen the rear wheel lug nuts, block the front wheels, and raise the rear of the vehicle on jackstands. Remove the rear wheels and detach the stabilizer bar link from the strut. Mark the relationship of the strut to the knuckle for reference during installation. Remove the strut-to-knuckle nuts by holding the oval-shaped bolt heads with a wrench and striking the end with a hammer to push them out of the knuckle and strut. Separate the strut from the rear knuckle, remove the upper mounting nuts, and secure the rear knuckle to prevent damage.

To inspect the strut, check for leaking fluid, dents, cracks, and other damage. Inspect the coil spring for chips or cracks in the coating and the spring seat for cuts and deterioration. If any issues are found, proceed to the strut disassembly procedure.

If the struts or coil springs show signs of wear such as leaking fluid, loss of damping capability, chipped, sagging, or cracked coil springs, it is important to explore all options before starting any work. The strut coil spring components cannot be serviced and must be replaced if there is a problem. However, it may be possible to find strut assemblies, complete with springs, on an exchange basis. Before disassembling the vehicle, it is recommended to check the cost and availability of parts. To disassemble, the strut and spring assembly should be removed and the strut clevis bracket portion should be mounted in a vise. Following the instructions of the tool manufacturer, a spring compressor should be installed to relieve pressure from the upper spring seat. The damper shaft nut should be unscrewed while holding the damper shaft from turning. The nut and upper mount should be removed and laid out in the order they were removed. The rubber portion of the upper mount should be checked for cracking and deterioration, and replaced if necessary. The upper spring seat should be removed from the damper shaft and the rubber portion should be inspected for cracking and hardness. The bearing in the spring seat should also be checked for smooth operation. The dust boot and rubber bump stop should be slid off the damper shaft and checked for cracking and deterioration, replacing if needed. The compressed spring should be carefully lifted from the assembly and set aside. To reassemble, the damper rod should be extended and the rubber bump stop and dust boot should be installed. The compressed coil spring should be placed onto the lower seat of the damper, with the end of the spring resting against the raised stop. The upper insulator and spring seat should be installed, followed by the upper mount and mounting nut, which should be tightened to the proper torque specifications. The spring compressor tool should be removed, and the strut spring assembly can then be installed.

Inspect the coil spring for chips or cracks in the coating and the spring seat for cuts or deterioration.