How do you change the brake light on a 2007 Cadillac STS?

To change the brake light on a 2007 Cadillac STS, first, open the trunk and remove the access cover located near the tail light assembly. Disconnect the electrical connector, then twist the socket counterclockwise to remove it from the assembly. Replace the old bulb with a new one, reinsert the socket, and reconnect the electrical connector before securing the access cover back in place. Finally, test the brake light to ensure it’s working correctly.