2010 Buick LaCrosse Owner's Manual - Page 315

Vehicle Care 9-35 High Intensity Discharge (HID) Lighting { WARNING The low beam high intensity discharge lighting system operates at a very high voltage. If you try to service any of the system components, you could be seriously injured. Have your dealer/retailer or a qualified technician service them. The up‐level vehicle has HID headlamps. The park lamp function is also a function of the HID headlamp. After an HID headlamp bulb has been replaced, the beam might be a slightly different shade than it was originally. This is normal. Headlamps, Front Turn Signal and Parking Lamps Base Headlamp Assembly The base model vehicle has a halogen high-beam headlamp, a low-beam/Daytime Running Lamp (DRL) headlamp and a turn signal/ parking lamp on the headlamp assembly. To replace one of these bulbs: 1. Open the hood. See Hood on page 9‑5. A. Low-Beam Headlamp/DRL B. High-Beam Headlamp C. Parking/Turn Signal Lamp 2. If replacing a headlamp bulb, remove the dust cover from the back of the headlamp housing by turning counterclockwise a quarter turn.