GMC C3500 Turn Signal Bulb Size
The GMC C3500 front and rear turn signal bulb sizes include 2357NA, 3057, 2057NA, 1157, and 2057, with front positions utilizing the larger bulb size options and rear positions accommodating multiple configurations. The replacement chart covers 1979 to 2000 model production years with corresponding bulb specifications for each generation.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
Front Turn Signal
| Years | Bulb Size |
|---|---|
| 1993-2000 | 2357NA |
| 1992 | 3057 |
| 1988-1991 | 2357NA |
| 1983-1986 | 2057NA |
| 1982 | 1157NA |
| 1981 | 1157 |
| 1980 | 1034NA |
| 1979 | 1157NA |
Rear Turn Signal
| Years | Bulb Size |
|---|---|
| 1998-2000 | 3057 |
| 1993-1997 | 1157 |
| 1990-1992 | 3057 |
| 1988-1989 | 2057 |
| 1983-1986 | 2057 |
| 1979-1982 | 1157 |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base, natural amber glass. 12V, 26.9W/8W. | 2357NA |
| ANSI standard (US & Canada). Dual-filament wedge bulb (T25). 12V, 27W/7W. | 3057 |
| ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base, natural amber glass. Brighter variant of 1157. 12V, 26.9W/8W. | 2057NA |
| ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base, natural amber glass. 12V, 21W/5W. | 1157NA |
| 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, natural amber glass. Variant of 1157. 12V, 21/5W. | 1034NA |
| ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. Brighter variant of 1157. 12V, 26.9W/8W. | 2057 |