2004 Cadillac Escalade EXT Owner's Manual - Page 359

Bulb Replacement See Replacement Bulbs on page 5-60 for the proper type of bulbs to use. For any bulb changing procedure not listed in this section, contact your dealer. High Intensity Discharge (HID) Lighting {CAUTION: 5. Turn the vertical aiming screw (V) until the headlamp beam is aimed to the horizontal tape line. The top edge of the cut-off should be positioned at the bottom edge of the horizontal tape line. 6. Repeat Steps 4 and 5 for the opposite headlamp. 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 your vehicle's HID headlamp bulb has been replaced, you may notice that the beam is a slightly different shade than it was originally. This is normal. 5-53