Removal Procedure

WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.

Raise and support the vehicle. Lifting and Jacking the Vehicle
Remove the rear tire and wheel assembly. Tire and Wheel Removal and Installation
Courtesy of GENERAL MOTORS COMPANY

Remove the 4 rear spring pins (1).
Rear Suspension Lower Control Arm Cover (2) - Remove
Support the rear suspension lower control arm with a suitable jack stand.
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Rear Shock Absorber Bolt (2) @ Rear Suspension Lower Control Arm (3) - Remove and DISCARD
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Using the jack stand, raise the rear suspension lower control arm to aid in the removal of the rear suspension lower control arm outer bolt.
Rear Suspension Lower Control Arm Outer Nut (1) - Remove
Rear Suspension Lower Control Arm Outer Bolt (3) - Remove and DISCARD
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Rear Suspension Lower Control Arm Inner Nut (1) - Loosen
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NOTE:
Observe the orientation of rear coil spring (1) as it will be dislodged upon removal of the rear suspension lower control arm.

Slowly raise the vehicle to release tension on the rear coil spring (1) and swing the rear suspension lower control arm (2) far enough to gain access to the rear coil spring (1) for removal.
Courtesy of GENERAL MOTORS COMPANY

Rear Suspension Lower Control Arm Inner Nut (1) - Remove
Rear Suspension Lower Control Arm Inner Washer (2) - Remove
Rear Suspension Lower Control Arm Inner Bolt (3) - Remove and DISCARD
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Rear Suspension Lower Control Arm (1) - Remove
Courtesy of GENERAL MOTORS COMPANY

Rear Coil Spring Insulator (1) @ Rear Coil Spring (2) - Remove
Rear Coil Spring Lower Insulator (3) @ Rear Coil Spring (2) - Remove