2003 Cadillac Seville Owner's Manual - Page 304

For the proper type of replacement bulb, see Bulb Replacement on page 5-55. For any bulb changing procedure not listed in this section, contact your dealer. 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. High Intensity Discharge (HID) Lighting Headlamps The low beam high intensity discharge lighting system operates at a very high voltage. If you try to service any the system components, of you could be seriously injured. Have your dealer or a qualified technician service them. 1. Open the hood. 2. Remove the upper filler panel by loosening all the screws and then removing the grommets. Your vehicle may have HID headlamps. 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. 5-55