Tools you might need:
* A small flat-head screwdriver (possibly)
* A Phillips head screwdriver (possibly)
* A new bulb (match the bulb type to the old one – the number should be printed on the bulb itself)
Steps:
1. Locate the Taillight Assembly: Open the trunk and locate the taillight assembly on the affected side (left or right).
2. Access the Bulb: This is where things can differ. There are typically a few ways the taillight assembly is accessed:
* Screws: You might need to remove screws holding the taillight assembly in place. These screws might be on the inside of the trunk, or even inside the wheel well, requiring you to remove a panel. Look carefully around the edges of the taillight.
* Clips: Some LeSabres use clips instead of screws. Gently pry the taillight assembly away from the body. Work your way around the perimeter, feeling for the clips to release. Use a flat-head screwdriver if necessary to carefully release clips. Be gentle to avoid breaking anything.
* Combination: Some models might have both screws and clips.
3. Disconnect the Bulb Connector: Once the taillight assembly is loose, carefully disconnect the electrical connector from the back of the bulb socket. It typically just pulls straight off, but gently wiggle it if it's stuck.
4. Remove the Old Bulb: The bulb socket usually twists to unlock it. You might need to twist it a quarter or half turn (check for any markings) to release the old bulb. Then gently pull the old bulb straight out.
5. Install the New Bulb: Insert the new bulb into the socket, ensuring it's firmly seated. Then, twist the socket back into place to lock it.
6. Reconnect the Connector: Re-attach the electrical connector to the bulb socket.
7. Reinstall the Taillight Assembly: Carefully put the taillight assembly back into place, aligning it correctly with the body. Replace any screws or clips you removed earlier.
8. Test the Bulb: Turn on your turn signal to ensure the new bulb is working correctly.
Important Notes:
* Be careful not to touch the glass part of the new bulb with your bare fingers. The oil from your skin can shorten the bulb's lifespan. If you do touch it, use a clean cloth to wipe it.
* If you're unsure about any step, consult a mechanic or watch a YouTube video specific to a 1999 Buick LeSabre taillight replacement. There are many videos available that visually guide you through the process. Searching "1999 Buick LeSabre taillight bulb replacement" will provide helpful results.
Remember, safety first! If you're not comfortable performing this repair yourself, it's always best to have a qualified mechanic do it.
