The process for replacing the tail lights on a Buick car may vary depending on the model and year of the vehicle. However, here are some general steps that you can follow:
Open the trunk or liftgate to access the tail light assembly from the inside of the vehicle.
Locate the screws or clips that hold the tail light assembly in place. Remove them with a screwdriver or pliers.
Carefully pull the tail light assembly away from the vehicle. You may need to wiggle it slightly to loosen it.
Disconnect the wiring harness from the back of the tail light assembly by pressing on the release tab or pulling the connector straight out.
Remove the old bulb by twisting it counterclockwise and pulling it straight out.
Install the new bulb by pushing it in and twisting it clockwise until it locks in place.
Reconnect the wiring harness to the back of the tail light assembly.
Carefully align the tail light assembly with the vehicle and push it back into place.
Replace the screws or clips that hold the tail light assembly in place.
Test the new tail light by turning on your car's headlights and verifying that the new tail light illuminates properly.
It's important to consult your Buick owner's manual for specific instructions for your vehicle. Additionally, if you are unsure about replacing the tail lights yourself, it's always best to seek the help of a professional mechanic.