GMC C3500HD Turn Signal Indicator Bulb Size
The GMC C3500HD turn signal indicator utilizes bulb sizes 74 and 194 for the specified lighting components. Recorded information spans the period from 1991 through 1997.
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 |
|---|---|
| 1992-1997 | 74 |
| 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 |