GMC W7500 Forward Brake Bulb Size
The GMC W7500 Forward brake light uses 1157 and 2057 bulb sizes for the lighting components on the vehicle. Available data for the specified lighting covers the range from 1984 through 1996.
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 |
|---|---|
| 1993-1996 | 1157 (Tiltmaster) |
| 1991-1992 | 1157 |
| 1990 | 1157 (Medium Duty) |
| 2057 (Tiltmaster) | |
| 1989 | 1157 |
| 1988 | 1157 (Medium Duty) |
| 2057 (Tiltmaster) | |
| 1987 | 1157 |
| 2057 | |
| 1986 | 1157 |
| 2057 (With 2 Round Headlamps) | |
| 1985 | 1157 |
| 2057 | |
| 1984 | 2057 |
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 |