Chevrolet Sonic Dome Light Bulb Size

The Chevrolet Sonic dome light requires a bulb size of 6411 for the interior lighting system. Data provided for the bulb specifications covers the range from 2017 to 2020.

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
2017-2020	6411

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, 36mm length, SV8.5 base. 12V, 5W.	6411

Other Locations

Additional Notes

The Chevrolet Sonic uses the 6411 bulb for its dome light across the 2017-2020 model years.
The 6411 is a festoon-type bulb, meaning it is cylindrical in shape and makes contact at both ends rather than through a screw or pin base.
It operates on a 36mm length with an SV8.5 base, which refers to the end-cap style used to seat the bulb within a festoon holder.
The 6411 runs at 12 volts and 5 watts, placing it in the low-wattage range typical of interior courtesy lighting.
The 6411 designation follows ANSI standards, indicating it meets the specifications recognized across the United States and Canada.
Because festoon bulbs are sized by length, fitment depends on matching the 36mm specification to the vehicle's dome light housing, as a different length will not seat correctly even if the base style is the same.