GMC K2500 Suburban Back Up Light Bulb Size
The GMC K2500 Suburban back up light utilizes 1156, 2356, 2456, and P21W bulb sizes for the rear illumination system. Data for the specified vehicle components covers the period from 1979 through 1999.
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
If US Type and EU Type show the same value, a direct cross-reference for this bulb is not available or the data is insufficient.
| Years | US Type | EU Type | Shop |
|---|---|---|---|
| 1997-1999 | 2456 | 2456 | Check Price |
| 1996 | 2356 | 2356 | Check Price |
| 1992-1995 | 2456 | 2456 | Check Price |
| 1979-1986 | 1156 | P21W | Check Price |
Bulb Specifications
| Description | Type | Shop |
|---|---|---|
| ANSI standard (US & Canada). Festoon bulb, specialty application. 12V. | 2456 | Check Price |
| ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. 12V. | 2356 | Check Price |
| ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W. | 1156 | Check Price |
| ECE standard (Europe & worldwide). Single-filament signalling bulb with BA15s bayonet base. 12V, 21W. | P21W | Check Price |