GMC W4500 Forward Check Engine Bulb Size
The GMC W4500 Forward check engine light requires a PC74 bulb size for proper installation within the instrument cluster. Data for 1992 through 1995 provides the specific information regarding the necessary components for the vehicle.
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 |
|---|---|
| 1992-1995 | PC74 |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Miniature wedge bulb (T5) with printed circuit board twist-lock socket, for instrument clusters. 12V, 1.4W. | PC74 |