Here's a general guide. Specific steps and the exact number of screws/clips may vary slightly depending on the trim level of your LeSabre. It's recommended to consult your owner's manual or a repair manual specific to your year and model for the most accurate instructions and diagrams.
Tools you'll likely need:
* Phillips head screwdriver (possibly a flathead as well)
* Socket wrench (possibly)
* New headlights (ensure they're the correct type for your LeSabre)
* Gloves (optional, but recommended)
Steps (General):
1. Locate the headlight assembly: The headlights are typically located within the front bumper.
2. Access the headlight assembly: This usually involves accessing the back of the headlight housing. You may need to:
* Open the hood: This gives you better visibility and access to the back of the headlight assembly.
* Remove access panels or covers: There are usually panels or covers that need to be removed to reach the headlight assembly's mounting screws or clips. These are often held on by screws or plastic clips. Be gentle to avoid breaking them.
3. Disconnect the electrical connectors: Locate the electrical connector(s) attached to the back of the headlight assembly. Carefully unplug them.
4. Remove the headlight assembly: The headlight assembly is secured by screws and/or clips. Carefully remove these fasteners. You might need to gently wiggle or pull the assembly once the fasteners are removed.
5. Install the new headlight assembly: Carefully reverse the steps from removing the old assembly. Make sure the new headlight is properly seated and all the fasteners are securely in place.
6. Reconnect the electrical connectors: Plug the electrical connectors back into the new headlight assembly.
7. Reinstall access panels or covers: Put back any panels or covers you removed earlier.
8. Close the hood: Ensure the hood is securely closed.
9. Test the new headlights: Turn on your headlights to make sure they're working correctly. Check both high and low beams.
Important Considerations:
* Type of headlight: Make sure you purchase the correct type of headlight bulb for your 1999 Buick LeSabre. The type and wattage are usually specified in your owner's manual.
* Bulb Replacement vs. Assembly Replacement: Sometimes, only the bulb needs replacing. If your headlights are working, but the bulb is burned out, it’s typically easier to replace the bulb within the existing housing rather than the entire assembly.
* Repair Manuals: A repair manual specific to your 1999 Buick LeSabre will give you detailed instructions with diagrams. This is highly recommended, especially if you're not comfortable working on cars.
* Safety: Work in a well-lit area and use caution when working near electrical components.
If you're uncomfortable performing this repair yourself, it's best to take your car to a qualified mechanic. This will ensure the job is done correctly and safely.