GMC G25 Courtesy Bulb Size
The GMC G25 courtesy bulb uses a 211-2 or 1141 size bulb for interior lighting applications. The replacement chart covers 1969 through 1972 vehicle production years with corresponding bulb size specifications.
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 |
|---|---|---|
| 1970-1972 | 211-2 | Check Price |
| 1969 | 1141 | Check Price |
Bulb Specifications
| Description | Type | Shop |
|---|---|---|
| ANSI standard (US & Canada). Festoon bulb, 41mm length, SV8.5 base. 12V, 12W. | 211-2 | Check Price |
| ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W. | 1141 | Check Price |