GMC V1500 Suburban Courtesy Bulb Size
The GMC V1500 Suburban courtesy light uses bulb sizes 1003 and 906 for the interior lighting system. Data for the specified vehicle covers the period from 1987 through 1991.
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 |
|---|---|
| 1991 | 1003 |
| 1989-1990 | 906 |
| 1987-1988 | 1003 |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W. | 1003 |
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 8W. | 906 |