GMC G2500 Automatic Transmission Indicator Bulb Size
The GMC G2500 automatic transmission indicator requires bulb size 73 or 1445 depending on the specific application. Data for the bulb sizes covers the range from 1985 to 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 |
|---|---|
| 1995 | 73 |
| 1992-1994 | 1445 |
| 1986-1987 | 73 |
| 1985 | 1445 |
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 |