Buick GS 400 Automatic Transmission Indicator Bulb Size
The Buick GS 400 automatic transmission indicator requires bulb size 53 or 1893 depending on the specific application. Data for the listed components covers the range from 1968 to 1969.
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 |
|---|---|
| 1969 | 53 |
| 1968 | 1893 |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Single-filament bulb with BA9s base. 12V, 2W. | 53 |
| ANSI standard (US & Canada). Miniature wedge bulb (T5). 12V, 2W. | 1893 |