2010 Buick LaCrosse Owner's Manual - Page 316

9-36 Vehicle Care Up-Level Headlamp Assembly The up-level model vehicle has a high intensity discharge (HID) high/ low beam, a dedicated DRL and a turn signal lamp on the headlamp assembly. The park lamp is also the function of the HID headlamp. See High Intensity Discharge (HID) Lighting on page 9‑35 for more information. To replace one of these bulbs: 1. Open the hood. See Hood on page 9‑5. A. DRL Lamp B. Turn Signal Lamp 2. Turn the bulb socket counterclockwise to remove it from the headlamp assembly. 3. Pull the bulb straight out from the socket. 4. Push the new bulb into the socket and reinstall the socket into the headlamp assembly by turning it clockwise. 3. Remove the bulb socket from the headlamp by turning counterclockwise a quarter turn. 4. Remove the bulb from the socket. 5. Install the new bulb in the socket. 6. Install the bulb socket by turning clockwise a quarter turn. 7. If a headlamp bulb was replaced, Install the dust cover in the back of the headlamp housing by turning clockwise a quarter turn.