GMC W4500 Forward Seat Belt Warning Bulb Size
The GMC W4500 Forward seat belt warning light utilizes 158 and PC74 bulb sizes for the instrument cluster display. Data for 1992 through 1996 provides specific information regarding the components used for the interior indicator system.
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 |
|---|---|---|---|
| 1996 | 158 (Tiltmaster) | 158 | Check Price |
| 1995 | PC74 (Tiltmaster) | T5+PCB | Check Price |
| 1993-1994 | 158 (Tiltmaster) | 158 | Check Price |
| 1992 | PC74 (Tiltmaster) | T5+PCB | Check Price |
Bulb Specifications
| Description | Type | Shop |
|---|---|---|
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3W. | 158 | Check Price |
| ANSI standard (US & Canada). Miniature wedge bulb (T5) with printed circuit board twist-lock socket, for instrument clusters. 12V, 1.4W. | PC74 | Check Price |