GMC Terrain Courtesy Bulb Size
The GMC Terrain courtesy light uses 194 and 12961 bulb sizes for the interior lighting system. Data for the specified components covers the period from 2010 through 2017.
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 |
|---|---|
| 2017 | 194 (Dome Rear Center) |
| 12961 (Trunk Light) | |
| 2013-2016 | 194 (Front) |
| 2012 | 12961 (Front) |
| 2010-2011 | 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 |