GMC P25 / P2500 Instrument Panel Bulb Size
GMC P25 and P2500 instrument panel bulbs utilize 3 distinct sizes: 168, 1445, and 161. The replacement chart documents bulb specifications across the 1967 to 1972 production range.
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 |
|---|---|
| 1972 | 168 |
| 1971 | 1445 |
| 1970 | 168 |
| 1969 | 161 |
| 1968 | 53 |
| 1967 | 161 |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W. | 168 |
| ANSI standard (US & Canada). Single-filament bulb with BA9s base. 12V, 2W. | 1445 |
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 1W. | 161 |
| ANSI standard (US & Canada). Single-filament bulb with BA9s base. 12V, 2W. | 53 |