GMC C25 Suburban Tail Light Bulb Size
The GMC C25 Suburban tail light bulb sizes include 198 and 1034, representing the distinct bulb specifications for this vehicle model. The replacement chart covers 1967 through 1978 production years with corresponding bulb size data.
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 |
|---|---|
| 1969-1978 | 198 |
| 1967-1968 | 1034 |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Miniature wedge bulb (T5). 12V, 2W. | 198 |
| ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. Variant of 1157. 12V, 21/5W. | 1034 |