Chevrolet Chevette Trunk Bulb Size

The Chevrolet Chevette trunk light requires bulb size 561 or 562 depending on the specific configuration of the lighting assembly. Data for the lighting components covers the range from 1982 through 1987.

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
1984-1987	561
1983	562
1982	561

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, 44mm length, end-cap contacts. 12V, 12W.	561
ANSI standard (US & Canada). Festoon bulb, 44mm length, end-cap contacts. 12V, 12W.	562

Other Locations

Additional Notes

The Chevrolet Chevette uses the 561 bulb for trunk lighting across the 1982 and 1984-1987 model years, making it the dominant fitment in this specification set.
The 561 is a festoon-type bulb, meaning it is cylindrical in form and makes electrical contact through metal caps at each end rather than through a base or pin configuration.
Both the 561 and 562 bulbs share identical physical and electrical ratings: 44mm in length, end-cap contacts, 12 volts, and 12 watts.
Despite their shared ratings and construction, the 561 and 562 carry distinct ANSI designations, which can affect fitment compatibility depending on the socket or retaining fixture used in a given model year.
The 1983 Chevrolet Chevette is specified with the 562 bulb rather than the 561, representing the sole year in this set where that designation applies to the trunk position.
Both bulb types are recognized under ANSI standards applicable in the United States and Canada, placing them within a standardized North American automotive lighting classification system.