GMC C6000 Instrument Panel Bulb Size
The GMC C6000 instrument panel utilizes 161, 168, 194, and 1893 bulb sizes for the internal illumination components. Available data for the specified vehicle covers the span from 1979 to 1990.
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 |
|---|---|
| 1989-1990 | 168 (Medium Duty) |
| 1988 | 194 |
| 1987 | 194 (Medium Duty) |
| 161 (Medium Duty, With 2 Rectangular Headlights) | |
| 1986 | 168 (Medium Duty) |
| 194 (Medium Duty, With 2 Rectangular Headlights) | |
| 1983-1985 | 161 (Medium Duty) |
| 194 (Medium Duty, With 2 Rectangular Headlights) | |
| 1982 | 194 |
| 1981 | 161 (Medium Duty) |
| 194 (Medium Duty, With 2 Rectangular Headlights) | |
| 1980 | 168 (Heavy Duty) |
| 1893 (Medium Duty) | |
| 194 (Medium Duty, With 2 Rectangular Headlights) | |
| 1979 | 168 (Heavy Duty) |
| 194 (Medium Duty) | |
| 161 (Medium Duty, With 2 Rectangular Headlights) |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W. | 168 |
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W. | 194 |
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 1W. | 161 |
| ANSI standard (US & Canada). Miniature wedge bulb (T5). 12V, 2W. | 1893 |