GMC G25 Instrument Panel Bulb Size
The GMC G25 instrument panel requires 3 distinct bulb sizes: 194, 1445, and 168, with each size serving specific lighting functions within the dashboard assembly. The replacement chart documents bulb specifications across the 1967 to 1978 production range for this vehicle model.
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 |
|---|---|
| 1976-1978 | 194 |
| 1975 | 1445 |
| 1974 | 194 |
| 1973 | 1445 |
| 1971-1972 | 168 |
| 1969-1970 | 1445 |
| 1968 | 53 |
| 1967 | 57 |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W. | 194 |
| ANSI standard (US & Canada). Single-filament bulb with BA9s base. 12V, 2W. | 1445 |
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W. | 168 |
| ANSI standard (US & Canada). Single-filament bulb with BA9s base. 12V, 2W. | 53 |
| ANSI standard (US & Canada). Single-filament bulb with BA9s base. 12V, 1W. | 57 |