GMC C1500 Check Engine Bulb Size
The GMC C1500 check engine light requires bulb sizes 74 and 194 for proper illumination. Data for the specified components spans the period from 1990 through 1999.
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 |
|---|---|
| 1999 | 74 |
| 1993-1997 | 74 |
| 1990-1991 | 194 |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Miniature wedge bulb (T5). 12V, 1.4W. | 74 |
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W. | 194 |