1999 Cadillac DeVille Owner's Manual - Page 303

yellowblue Bulb Replacement For the proper type of replacement bulb, See "Replacement Bulbs" in the Index. For any bulb changing procedure not listed in this section, contact your dealer's service department. Headlamps Halogen Bulbs CAUTION: 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. 1. To access the headlamps, lift the cover as shown. 6-33