Removal Procedure
WARNING: This page is about a different car, the 2021 Chevrolet Traverse. However, it is still accessible from the selected car via links, so may be relevant.
Quarter Lower Rear Trim Panel (2) - Remove - Quarter Lower Rear Trim Panel Replacement (Right Side) , or Quarter Lower Rear Trim Panel Replacement (Left Side)
Electrical Connector (1) @ Accessory and Liftgate Control Module (2) - Disconnect
Accessory and Liftgate Control Module (1) - Remove