Buick GS 400 Courtesy Bulb Size
The Buick GS 400 courtesy light requires a bulb size of 90 for the interior lighting system. Data for the specific bulb requirements 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 Type | Shop |
|---|---|---|
| 1968-1969 | 90 | Check Price |
Bulb Specifications
| Description | Type | Shop |
|---|---|---|
| ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 13W. | 90 | Check Price |