GMC 100 Tail Light Bulb Size
The GMC 100 tail light uses bulb sizes 63 and 67 according to the provided specifications. Data for the bulb sizes covers the range from 1951 through 1959.
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 |
|---|---|
| 1956-1959 | 67 |
| 1951-1955 | 63 |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Lower wattage variant of 1156. 12V, 8W. | 67 |
| ANSI standard (US & Canada). Single-filament bulb with BA9s base. 12V, 0.63W. | 63 |