What size headlight bulb is needed in a 2001 Buick Lesabre?

Hi, this is Bo, an auto expert on RepairPal's Car Genius team! For a 2001 Buick LeSabre, the headlight bulb you're looking for is most likely a **9006** for the low beam and a **9005** for the high beam. Since you’re replacing the passenger side, double-check if it's the low or high beam that needs attention. These are standard halogen bulbs, but if you're considering an upgrade, LED or HID options are available, though they may require a few extra adjustments. It’s a pretty straightforward job, but make sure to replace both sides at the same time if one bulb is burned out—the other’s probably not far behind! If you need any further advice or want help finding a trusted RepairPal shop in your area, please feel free to call us at 877-913-1554.