2012 Buick LaCrosse Owner's Manual - Page 357

Vehicle Care 10-31 Bulb Replacement For the proper type of replacement bulbs, see Replacement Bulbs on page 10‑35. For any bulb changing procedure not listed in this section, contact your dealer. 9. Make sure that the light from the headlamp is positioned at the bottom edge of the horizontal tape line. The lamp on the left (A) shows the correct headlamp aim. The lamp on the right (B) shows the incorrect headlamp aim. 10. Repeat Steps 7 through 9 for the opposite headlamp. 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 or a qualified technician service them. After an HID headlamp bulb has been replaced, the beam might be a slightly different shade than it was originally. This is normal. Halogen Bulbs { WARNING Halogen bulbs have pressurized gas inside and can burst if you drop or scratch the bulb. You or others could be injured. Be sure to read and follow the instructions on the bulb package.