GMC B6000 Tail Light Bulb Size
The GMC B6000 tail light utilizes 1157 and 2057 bulb sizes for the rear lighting system. Available information covers the span of time from 1980 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 |
|---|---|
| 1984-1991 | 1157 (Medium Duty) |
| 1983 | 2057 (Medium Duty) |
| 1981-1982 | 1157 (Medium Duty) |
| 1980 | 1157 |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. 12V, 21W/5W. | 1157 |
| ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. Brighter variant of 1157. 12V, 26.9W/8W. | 2057 |