The Chevrolet Celebrity brake light utilizes 2057 and 1157 bulb sizes for the rear lighting system. Data for the specific components covers the period from 1982 through 1990.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 2057 bulb is the most frequently specified type across the Chevrolet Celebrity brake light positions, appearing in the standard brake light application for model years 1983-1990, with the exception of 1982.
The 2057 is a dual-filament bulb rated at 12V with a high/low wattage split of 26.9W and 8W, and it uses a BAY15d bayonet base, the same base type found on the 1157 it replaces in higher-output applications.
The 1157, specified for the 1982 Chevrolet Celebrity, shares the BAY15d bayonet base with the 2057 but operates at a lower wattage of 21W and 5W across its two filaments, making the two bulbs physically interchangeable at the socket level despite differing output ratings.
Because the 2057 and 1157 share the BAY15d base, a 1157 socket will physically accept a 2057 bulb, though the output levels differ between the two types.
The Center High Mount Stop Light position uses two distinct bulb types depending on the model year, with the 1156 specified for 1986-1988 and the 212-2 specified for 1990.
The 212-2 is a festoon-style bulb with an SV8.5 base, rated at 12V and 12W, and its 41mm length is a defining fitment factor that distinguishes it from the other bulb types listed in these specifications.
The 1156 is a single-filament bulb rated at 12V and 21W, using a BA15s bayonet base, which is not interchangeable with the BAY15d base used by the 2057 and 1157 despite a similar physical appearance.
The shift from the 1156 to the 212-2 in the Center High Mount Stop Light position between 1988 and 1990 reflects a change in socket and housing design, as the two bulb types use entirely different base configurations.