Chevrolet Corsica Courtesy Bulb Size

The Chevrolet Corsica courtesy light uses bulb sizes 168 and 192 for interior illumination. Available information covers the specific time period from 1987 through 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
1993-1996	168
1992	192
1987-1991	168

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W.	168
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3W.	192

Other Locations

Additional Notes

The courtesy bulb position on the Chevrolet Corsica uses one of two bulb types across its production run: the 168 and the 192, both of which are ANSI-standardized miniature wedge bulbs classified under the T10 form factor.
The T10 wedge base is a small, pin-free bulb format that seats by friction fit into a wedge-style socket, which is a common design in interior and courtesy lighting applications.
The 168 bulb operates at 12 volts and draws 4.9 watts, while the 192 operates at the same 12-volt rating but draws only 3 watts, making the two bulbs electrically distinct despite sharing the same T10 base type.
Because both the 168 and 192 share the T10 wedge base, they are physically interchangeable in terms of socket fitment, but their differing wattage ratings means they are not electrically equivalent replacements for one another.
The 168 bulb is specified for the Chevrolet Corsica courtesy position across the majority of model years, covering 1987-1991 and 1993-1996.
The 192 bulb is specified exclusively for the 1992 model year, representing the sole year in which the lower 3-watt output is called for in this position.
Both bulb types conform to ANSI standards applicable in the United States and Canada, indicating consistent regulatory compliance across the full range of affected model years.
The wattage difference between the 168 and 192 affects luminous output, with the higher 4.9-watt 168 producing greater light output than the 3-watt 192 under the same 12-volt supply.