GMC W5500 Forward Automatic Transmission Indicator Bulb Size
The GMC W5500 Forward automatic transmission indicator requires bulb sizes 73 and 1445 for proper illumination of the instrument panel display. Data for the specified components covers the range from 1988 through 1995.
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 | 73 |
| 1988 | 73 |
| 1445 (With 2 Round Headlamps) |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Miniature wedge bulb (T5). 12V, 1.4W. | 73 |
| ANSI standard (US & Canada). Single-filament bulb with BA9s base. 12V, 2W. | 1445 |