Chevrolet Traverse Back Up Light Bulb Size

The Chevrolet Traverse back up light utilizes bulb sizes 921 and 912 for illumination. Provided information covers the span from 2009 through 2022 for the specified lighting components.

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
2013-2022	921
2009-2012	912

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Wedge bulb (T15). 12V, 16W.	921
ANSI standard (US & Canada). Wedge bulb (T15). Variant of 921. 12V, 12W.	912

Other Locations

Additional Notes

The Chevrolet Traverse backup light uses one of two bulb sizes across its model years: the 921 for 2013-2022 and the 912 for 2009-2012.
Both the 921 and 912 are ANSI-standardized bulbs recognized in the United States and Canada, meaning they conform to a defined set of electrical and physical specifications.
Both bulbs use a wedge-style base in the T15 envelope, a compact form factor common in reverse and interior lighting applications.
The 921 operates at 12 volts and 16 watts, while the 912 operates at 12 volts and 12 watts. The voltage rating is identical, but the wattage differs.
The 912 is classified as a variant of the 921. Because the two share the same T15 wedge base, they are physically interchangeable in terms of socket fit.
Despite the shared base, the wattage difference between the 912 and 921 is a relevant fitment consideration. Installing a 921 in a socket designed for a 912 increases the wattage draw by 4 watts per bulb.
The Chevrolet Traverse (2013) marks the transition point where the specified backup light bulb changed from the 912 to the higher-wattage 921.