Chevrolet Trailblazer Courtesy Bulb Size
The Chevrolet Trailblazer courtesy light uses 194 and 12961 bulb sizes for the interior lighting system. Data for the specified components covers the period from 2002 through 2024.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
Bulb Size by Year Range
| Years | Bulb Size |
|---|---|
| 2024 | 194 |
| 2023 | 12961 |
| 2021 | 194 |
| 2002-2005 | 194 |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W. | 194 |
| Philips part number. Miniature wedge bulb (T10) with W2.1x9.5d base. 12V, 5W. | 12961 |