GMC General Instrument Panel Bulb Size
The GMC General instrument panel requires bulb sizes 158 and 194 for proper illumination of the dashboard gauges and indicators. Data for the specified components covers the range from 1984 to 1988.
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 |
|---|---|
| 1988 | 158 (Tiltmaster) |
| 1985-1987 | 194 (Tiltmaster) |
| 1984 | 158 (Tiltmaster) |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3W. | 158 |
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W. | 194 |