The Chevrolet P30 front turn signal uses a 194NA bulb size while the rear turn signal requires a 2057 bulb size. The replacement chart covers vehicle production years from 1995 to 1999 with corresponding bulb specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Chevrolet P30 uses the 194NA bulb for the front turn signal across the 1995-1999 model years.
The 194NA is a T10 miniature wedge bulb rated at 12V and 3.78W, with natural amber glass that produces a yellow-orange output without the need for an amber lens or housing.
The 194NA conforms to ANSI standards recognized in both the United States and Canada.
The P30 uses the 2057 bulb for the rear turn signal across the 1995-1999 model years.
The 2057 is a dual-filament bulb with a BAY15d bayonet base, rated at 12V with a high filament draw of 26.9W and a low filament draw of 8W, allowing it to serve both high-intensity and reduced-intensity functions within a single housing.
The 2057 is a brighter variant of the 1157 bulb. While the two share the same BAY15d base and are physically interchangeable in many applications, the 2057 produces greater output on its high filament, which is a relevant fitment consideration.
The 194NA and 2057 use entirely different base types, a wedge base and a bayonet base respectively, making them non-interchangeable with each other.
Both the 194NA and 2057 conform to ANSI standards applicable in the United States and Canada.