GMC W4500 Forward Parking Brake Indicator Bulb Size
The GMC W4500 Forward parking brake indicator utilizes bulb size 158 and bulb size PC74 for the lighting system. Data for the specific components covers the range from 1992 through 1996.
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 |
|---|---|
| 1996 | 158 (Tiltmaster) |
| 1994-1995 | PC74 (Tiltmaster) |
| 1993 | 158 (Tiltmaster) |
| 1992 | PC74 (Tiltmaster) |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3W. | 158 |
| ANSI standard (US & Canada). Miniature wedge bulb (T5) with printed circuit board twist-lock socket, for instrument clusters. 12V, 1.4W. | PC74 |