For the 2022 Chevrolet TrailBlazer, the low-beam headlight uses a 9005 bulb, while the high-beam headlight uses an H9 bulb. The supplied fitment data does not identify a projector or non-projector headlight variation, so confirm the existing bulb and socket before ordering.
The front fog lights use integrated LED units rather than a replaceable bulb. Front turn signals, rear turn signals, and brake lights use 7440 bulbs. Tail-light fitment includes both 168 and 7440 bulbs, so check the specific socket location before replacement.
Several other exterior lights are LED, including the center stop light, license plate lights, parking lights, and front and rear side markers. Interior fitment includes a 2825 dome-light bulb, 194 trunk and glove-box/map-light applications, plus a 2825 map-light application. No reverse-light bulb is listed in the supplied data.