GMC 300 Dome Light Bulb Size
The GMC 300 dome light requires bulb size 93 or 94 depending on the specific application. Data for the bulb size covers the range from 1956 to 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 Type | Shop |
|---|---|---|
| 1958-1959 | 93 | Check Price |
| 1956-1957 | 94 | Check Price |
Bulb Specifications
| Description | Type | Shop |
|---|---|---|
| ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Lower wattage variant of 1156. 12V, 13W. | 93 | Check Price |
| ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. Variant of 1157. 12V, 21/5W. | 94 | Check Price |