Chevrolet Silverado Cornering Bulb Size

The Chevrolet Silverado cornering bulb uses a 921 size bulb for this application. The replacement chart covers vehicle production years from 2021 to 2023 with corresponding bulb size specifications.

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
2021-2023	921 (1500 only)

Bulb Specifications

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

Other Locations

Additional Notes

The Chevrolet Silverado 1500 uses the 921 bulb for its cornering function across the 2021-2023 model years.
The 921 is a T15 wedge-base bulb, meaning it connects to its socket through a plastic wedge rather than a metal pin or bayonet base.
The 921 operates at 12 volts and 16 watts, which places it in the low-wattage range typical of auxiliary lighting functions such as cornering.
The 921 designation follows the ANSI standard used in the United States and Canada, making it a regionally standardized part number rather than a proprietary one.
The cornering bulb specification applies exclusively to the 1500 trim of the Silverado for the listed years, as indicated by the "1500 only" notation in the fitment data.