For the 2007 Chevrolet TrailBlazer, the supplied fitment data lists a 9005 bulb for the high beam and daytime running light. No low-beam bulb is listed in the available data, so verify the headlamp assembly before ordering a replacement.
Fog-light fitment depends on trim: LS models use an 880 bulb, while SS models use an 893. The front turn signal and parking light both use 3757A, and the front side marker uses 194NA.
- Rear turn signal and reverse light: 3157
- Brake and tail light: 3157R
- Center stop light: LED
- License plate and map-light listings include 2825 and 98
- Dome and trunk lights use 212-2; the vanity light uses 7065
Check the vehicle trim and the existing socket or lamp assembly when confirming any bulb not specifically differentiated by configuration.