GMC K2500 Courtesy Bulb Size
The GMC K2500 courtesy bulb uses 3 distinct sizes: 211-2, 168, and 194, with each bulb size corresponding to specific vehicle configurations. A replacement chart documents courtesy bulb specifications across the 1979 to 2000 production range.
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 |
|---|---|---|---|
| 2000 | 211-2 | 211-2 | Check Price |
| 1999 | 168 | W5W | Check Price |
| 1998 | 211-2 | 211-2 | Check Price |
| 1997 | 168 | W5W | Check Price |
| 1996 | 194 | W5W | Check Price |
| 1992-1995 | 168 | W5W | Check Price |
| 1988-1991 | 1003 | 1003 | Check Price |
| 1985-1986 | 194 | W5W | Check Price |
| 1980-1984 | 1004 | 1004 | Check Price |
| 1979 | 1156 | P21W | Check Price |
Bulb Specifications
| Description | Type | Shop |
|---|---|---|
| ANSI standard (US & Canada). Festoon bulb, 41mm length, SV8.5 base. 12V, 12W. | 211-2 | Check Price |
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W. | 168 | Check Price |
| ECE standard (Europe & worldwide). Single-filament signalling bulb with W2.1x9.5d wedge base. 12V, 5W. | W5W | Check Price |
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W. | 194 | Check Price |
| ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W. | 1003 | Check Price |
| ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. Variant of 1157. 12V, 21/5W. | 1004 | 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 |