How do you remove a factory subwoofer of a Cadillac CTS 2006?

To remove the factory subwoofer from a 2006 Cadillac CTS, first disconnect the vehicle's battery to prevent any electrical issues. Then, access the trunk and locate the subwoofer, usually mounted on the rear deck or in a side panel. Carefully unscrew any mounting hardware and disconnect the wiring harness from the subwoofer. Once detached, you can remove the subwoofer from its housing.