GMC C5000 Back Up Light Bulb Size
The GMC C5000 back up light requires a 1156 bulb size for the specific lighting component located at the rear of the vehicle. Available data covers the production range from 1979 through 1990 for the specified automotive application.
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 | US Type | EU Type | Shop |
|---|---|---|---|
| 1979-1990 | 1156 (Medium Duty) | P21W | Check Price |
Bulb Specifications
| Description | Type | Shop |
|---|---|---|
| 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 |