GMC W5500 Forward Turn Signal Indicator Bulb Size
The GMC W5500 Forward turn signal indicator utilizes bulb sizes 158, 168, 73, and PC194 across various production periods. Available information covers the time span from 1988 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 |
|---|---|
| 1994-1996 | 158 (Tiltmaster) |
| 1992-1993 | PC194 (Tiltmaster) |
| 1989-1991 | 73 (Tiltmaster) |
| 1988 | 158 (Tiltmaster) |
| 168 (With 2 Round Headlamps) |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3W. | 158 |
| ANSI standard (US & Canada). Miniature wedge bulb (T10) with printed circuit board twist-lock socket, for instrument clusters. 12V, 3.78W. | PC194 |
| ANSI standard (US & Canada). Miniature wedge bulb (T5). 12V, 1.4W. | 73 |
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W. | 168 |