GMC 2500 Series Tail Light Bulb Size
The GMC 2500 Series tail light requires a 1034 bulb size for the rear lighting assembly. Data for 1034 bulbs covers the period from 1960 through 1965.
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 |
|---|---|
| 1960-1965 | 1034 |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. Variant of 1157. 12V, 21/5W. | 1034 |