Cadillac STS Stepwell Bulb Size
The Cadillac STS stepwell light uses 906 and 12961 bulb sizes for illumination within the interior cabin area. Data for the specified components covers the period from 2005 through 2011.
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 |
|---|---|
| 2010-2011 | 906 (Door Light) |
| 12961 (Stepwell Light) | |
| 2005 | 906 (Door Light) |
| 12961 (Stepwell Light) |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 8W. | 906 |
| Philips part number. Miniature wedge bulb (T10) with W2.1x9.5d base. 12V, 5W. | 12961 |