For the 2008 Chevrolet TrailBlazer, the supplied fitment data lists a 9005 bulb for the high beam and daytime running light. No low-beam bulb is specified in the available data, so verify the headlamp assembly before ordering a replacement.
Fog-light fitment varies by configuration: base models use an 880 bulb, while the SS model uses an 893. This is the key configuration difference listed for the front lighting.
- Front turn signal and parking light: 3757A
- Front side marker: 194NA
- Reverse light and rear turn signal: 3157
- Brake and tail light: 3157R
- Center stop light: LED
- License plate and map-light options: 2825 or 98
Interior fitments also include 212-2 for the dome and trunk lights, 194 or 7441 for courtesy and glove-box applications, and 7065 for the vanity light.