Removing the taillights on a Cadillac is a quick and simple process. The taillights are located in the trunk and are enclosed by the taillight shell. The upkeep of your taillights is important, as you take a chance of being stopped by law enforcement if the lights are not functioning correctly. Keeping all lights working will save money in the long run.
Open the trunk to access the lights. The assembly is located just behind the lights. They can only be accessed in the trunk.
Grasp the wiring connector and twist counterclockwise. Pull as you twist the connector. It will come out with a bulb at the end of it.
Twist the bulb counterclockwise and pull off. It will come out of the assembly.
Insert the new bulb into the assembly. Push the bulb down and twist until it locks in place.
Push the connector back into the assembly. Push in and turn clockwise. The connector will lock in place.
Close the trunk. Turn on the headlights and inspect the taillights to ensure they are working correctly.