GMC K15 Suburban Side Marker Bulb Size
The GMC K15 Suburban front side marker bulb uses 168 and 194 size bulbs as specified in the replacement chart. The data covers 1973 through 1978 model years for this vehicle.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
Front Side Marker
| Years | Bulb Size |
|---|---|
| 1974-1978 | 168 |
| 1973 | 194 |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W. | 168 |
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W. | 194 |