Chevrolet Corsica Tail Light Bulb Size

The Chevrolet Corsica tail light utilizes 194 and 2057 bulb sizes depending on the specific version of the vehicle. Data for the lighting components covers the range from 1987 to 1996.

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
1995-1996	194
1991-1994	2057
1990	194
1987-1989	2057

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W.	194
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. Brighter variant of 1157. 12V, 26.9W/8W.	2057

Other Locations

Additional Notes

The Chevrolet Corsica tail light specifications span the 1987-1996 model years, with two distinct bulb types appearing across that range: the 194 and the 2057.
The 2057 is the more frequently specified bulb, appearing in seven of the ten model years covered: 1987-1989, 1991-1994.
The 194 is a T10 miniature wedge bulb rated at 12V and 3.78W, standardized under ANSI specifications for the US and Canadian markets.
The 2057 is a dual-filament bulb with a BAY15d bayonet base, rated at 12V with a two-wattage output of 26.9W on the high filament and 8W on the low filament, also carrying ANSI standardization for US and Canadian markets.
The dual-filament design of the 2057 allows a single bulb to serve both brake and running light functions at different intensities, which is a common arrangement in tail light assemblies.
The 2057 is described as a brighter variant of the 1157, meaning the two share the BAY15d bayonet base but differ in wattage output; this distinction is relevant to fitment, as substituting one for the other affects light output.
The 194 and 2057 use physically incompatible bases, the wedge base versus the BAY15d bayonet base, meaning the two bulb types are not interchangeable with each other.
The 1990 Corsica is specified with the 194 rather than the 2057, which differs from both the preceding year (1989) and the following years (1991-1994), making year-specific verification relevant for that model year.
The 1995-1996 Corsica models are specified with the 194, a single-filament low-wattage bulb, in contrast to the dual-filament 2057 used in earlier years.