GMC G3500 Automatic Transmission Indicator Bulb Size
The GMC G3500 automatic transmission indicator requires bulb size 1445 or 73 depending on the specific application for the vehicle. Data for the bulb sizes covers the range from 1985 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 |
|---|---|
| 1995-1996 | 1445 |
| 1994 | 73 |
| 1992-1993 | 1445 |
| 1987 | 73 |
| 1985-1986 | 1445 |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Single-filament bulb with BA9s base. 12V, 2W. | 1445 |
| ANSI standard (US & Canada). Miniature wedge bulb (T5). 12V, 1.4W. | 73 |