For the 2002 Chevrolet Impala, the supplied fitment data lists a 9005 bulb for the high beam and daytime running light. No low-beam bulb is provided in the available data, so confirm the low-beam socket and headlamp assembly before ordering. The data does not identify a projector or non-projector headlight variation.
For auxiliary lighting, the fog lights use 893 bulbs. Front turn signals and parking lights use 3457A, while the front and rear side markers use 194NA. At the rear, the brake and tail lights use 3057R, and the rear turn signals use 3057. The center stop light is listed as LED.
Other notable fitments include 921 for the reverse lights, 194 or 7441 for the license plate and several interior applications, 578 for the dome light, and 912 for the trunk light. Where multiple bulbs are listed, verify the installed socket before purchase.