GM 15270557 Rear Spring

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To remove the rear wheels, start by loosening the lug nuts and chocking the front wheels to prevent the vehicle from rolling. Then, raise the rear of the vehicle and support it securely on jackstands. Once the vehicle is properly supported, remove the rear wheels. Next, use floor jacks to support the rear axle on each side, placing the jack heads under the coil spring pockets. Remove the shock absorber lower mounting bolts on each side and separate the flexible brake hoses from the brackets on each trailing arm. Carefully lower both sides of the rear axle assembly, allowing it to pivot down until the coil spring tension is released. Lift off the coil springs from the pads on the rear axle assembly. If the springs are being replaced, transfer the upper and lower spring pads to the new springs. To install the rear axle assembly, follow the reverse of the removal procedure. Make sure to install the springs with their colored tags facing towards the rear of the vehicle.

Some signs of wear in struts or coil springs include leaking fluid, loss of damping capability, and chipped, sagging, or cracked coil springs.