GMC C3500 High Beam Indicator Bulb Size
The GMC C3500 high beam indicator utilizes bulb sizes 74, 161, and 168 depending on the specific production period. Available information covers the span from 1980 through 1997 for the listed components.
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 |
|---|---|
| 1993-1997 | 74 |
| 1988-1992 | 161 |
| 1980-1986 | 168 |
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, 1W. | 161 |
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W. | 168 |