GMC General Parking Brake Indicator Bulb Size
The GMC General parking brake indicator utilizes bulb size 158 and bulb size 194 for the lighting system. Data for the specific 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) |
| 1986-1987 | 194 (Tiltmaster) |
| 1984-1985 | 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 |