For the 2004 Buick LeSabre, the supplied fitment data lists a 9005 bulb for the high beam. No low-beam bulb is listed, so verify the headlamp assembly and the bulb currently installed before ordering a low-beam replacement. The data does not identify a projector or non-projector variation.
Front turn signals and parking lights use 3157 bulbs, while the daytime running lights use 3156. The front side markers use 194NA; the same bulb is listed for the rear side markers. At the rear, the reverse and rear turn signals use 3057, while the brake and tail-light applications list 3057R. The tail-light data also includes a 161 bulb, indicating more than one listed tail-light application.
The center stop light uses 3155, and the license-plate and ash lights use 161. Interior listings include 578 for dome, courtesy, and map lights, 211-2 for the trunk, and 7065 for the vanity light.