Chevrolet Cobalt Dome Light Bulb Size

The Chevrolet Cobalt dome light requires bulb size 561 or 562 depending on the specific version of the interior illumination component. Data for the bulb size chart covers the range from 2005 through 2010.

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
2008-2010	561
2005-2007	562

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 Cobalt dome light uses one of two bulb sizes depending on the model year: the 561 fits the 2008-2010 model years, while the 562 fits the 2005-2007 model years.
Both the 561 and 562 are festoon-type bulbs, a form factor characterized by a cylindrical body with metal end-cap contacts at each end rather than a base pin or wedge configuration.
Each bulb shares an identical 44mm length and operates at 12 volts with a 12-watt power rating, making their electrical and physical profiles effectively the same.
Despite their near-identical specifications, the 561 and 562 carry distinct ANSI designations, and fitment across the Cobalt's production run is split strictly by year group rather than being interchangeable across all years.
Both bulb types are classified under ANSI standards recognized in the United States and Canada, indicating conformance to a defined set of performance and dimensional criteria for the North American market.