GMC C7000 Brake Bulb Size
The GMC C7000 brake light utilizes a 1157 bulb size for the rear lighting system on the vehicle. Available information covers the production range from 1979 through 1990 for the specified automotive components.
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 |
|---|---|
| 1984-1990 | 1157 |
| 1981-1983 | 1157 (Medium Duty) |
| 1979-1980 | 1157 |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. 12V, 21W/5W. | 1157 |