GMC W6500 Forward Automatic Transmission Indicator Bulb Size
The GMC W6500 Forward automatic transmission indicator requires bulb sizes 73, 1445, and 158 for proper illumination of the component. Data for the specified vehicle covers the range from 1987 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) | |
| 1987 | 73 |
| 1445 (With 2 Round Headlamps) | |
| 158 (With 4 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 |
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3W. | 158 |