For the 2003 Chevrolet Suburban 1500, the headlight fitment uses a 9006 low beam and 9005 high beam. The supplied data does not list separate projector or non-projector headlight applications, so verify the original bulb before ordering if the vehicle has a nonstandard headlamp assembly.
The fog lights use 880 bulbs. Front turn signals and parking lights share the 4157NA bulb, while front side markers use 194NA. At the rear, the reverse lights use 3157, brake and tail lights use 3157R, and rear turn signals use 3157A. The daytime running light bulb is 4114, and the license plate lights use 194.
- Courtesy light: compare the original bulb; listed options are 168, 561, and 2721.
- Instrument lighting: compare the original; listed options are PC195 and PC74.
- Dome and trunk lights use 578; the map light uses 161.