2010 Buick LaCrosse Owner's Manual - Page 318

9-38 Vehicle Care 7. Push the new bulb straight into the bulb socket until it clicks. 8. Turn the bulb socket clockwise to reinstall. 9. Reconnect the wiring harness. 10. Push the taillamp assembly back into place on the vehicle. 11. Turn the four wing nuts clockwise to reinstall them. 12. Place the trunk trim to its original location. 4. Pull out the taillamp assembly and disconnect the wiring harness. License Plate Lamp The licence plate lamps for this vehicle are on the trunk lid. To replace one of these bulbs: 1. Open the trunk. See Trunk on page 1‑11 for more information. A. Back-up Lamp B. Turn Signal Lamp 5. Turn the bulb socket counterclockwise to remove it. 6. Pull the old bulb straight out of the bulb socket. 2. Push the end on either of the lamp assemblies (passenger side shown) and then move the lamp assembly down to remove it from trunk lid.