GMC P15 / P1500 Courtesy Bulb Size
GMC P15 / P1500 courtesy bulb utilizes 211-2 and 1156 bulb sizes for interior lighting applications. The replacement chart covers 1969 to 1972 model 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 Size |
|---|---|
| 1970-1972 | 211-2 |
| 1969 | 1156 |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Festoon bulb, 41mm length, SV8.5 base. 12V, 12W. | 211-2 |
| ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W. | 1156 |