Chevrolet LUV front turn signal bulbs measure 1157 in size, while rear turn signal bulbs measure 1156 in size. The replacement chart covers vehicle production spanning 1975 to 1982.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Chevrolet LUV uses the 1157 bulb for the front turn signal across all listed model years, spanning 1975-1982.
The 1157 is a dual-filament bulb, meaning it serves two lighting functions within a single housing, operating at 12V with filament ratings of 21W and 5W respectively.
The 1157 uses a BAY15d bayonet base, a two-pin offset base design that prevents incorrect installation by ensuring only one rotational orientation fits the socket.
The rear turn signal on the Chevrolet LUV calls for the 1156 bulb across all listed model years, spanning 1975-1982.
The 1156 is a single-filament bulb rated at 12V and 21W, dedicated to one lighting function rather than the dual role of the front 1157.
The 1156 uses a BA15s bayonet base, a single-pin design that is not interchangeable with the BAY15d base of the 1157, despite both being bayonet-style mounts of similar size.
Both the 1157 and 1156 are ANSI-standardized bulbs recognized in the United States and Canada, meaning they conform to a defined set of electrical and physical specifications shared across manufacturers.
The front and rear turn signal positions on the LUV require different bulb types, and substituting one for the other is not supported by the specifications due to the differing base configurations and filament counts.