The Chevrolet P30 side marker utilizes a unique 194 bulb size for illumination purposes. Data for the specific component covers the range from 1995 through 1996.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 194 bulb is the sole bulb size specified for the Chevrolet P30 across both front and rear side marker positions for the 1997-1999 model years.
The 194 bulb follows the ANSI standard recognized in both the United States and Canada, meaning it conforms to a defined set of electrical and physical criteria shared across North American markets.
It is classified as a miniature wedge bulb, a type that uses a wedge-shaped base rather than a metal contact pin, allowing it to seat directly into a compatible socket without a separate holder.
The T10 designation refers to the bulb's tubular envelope width, expressed in eighths of an inch, placing it at 10/8 or 1.25 inches wide, which is a standard sizing reference in miniature automotive lighting.
The 194 operates at 12 volts, consistent with the standard electrical system voltage found in conventional passenger and commercial vehicles.
At 3.78 watts, the 194 draws a low level of power, which is typical for side marker applications where continuous illumination is required without significant load on the vehicle's electrical system.
Because the same bulb size is specified for both the front and rear side marker positions on the P30, a single bulb type serves both locations, though this does not indicate that the lenses or housings are interchangeable between positions.
The wedge base format of the 194 is not compatible with bayonet or festoon-style sockets, so socket type must correspond to the wedge fitting when a replacement is sourced.