GMC P35 / P3500 Brake Bulb Size
GMC P35 and P3500 models utilize 198 and 1034 bulb sizes for brake applications, with these specific bulb sizes representing the replacement specifications for the brake system. The replacement chart covers vehicle production years spanning 1967 to 1972, detailing bulb size requirements across this 6-year period.
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 |
|---|---|
| 1969-1972 | 198 |
| 1967-1968 | 1034 |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Miniature wedge bulb (T5). 12V, 2W. | 198 |
| ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. Variant of 1157. 12V, 21/5W. | 1034 |