GMC R2500 Seat Belt Warning Bulb Size
The GMC R2500 seat belt warning light utilizes 194 and 168 bulb sizes for the specific interior illumination component. Data for the bulb sizes covers the range from 1987 through 1989.
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 |
|---|---|
| 1988-1989 | 194 |
| 1987 | 168 |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W. | 194 |
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W. | 168 |