Chevrolet Avalanche Daytime Running Light Bulb Size

The Chevrolet Avalanche daytime running light utilizes bulb size 2458 or 3157 depending on the specific version of the component. Data for the provided specifications covers the range from 2007 through 2013.

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	US Type	EU Type	Shop
2007-2013	3157	P27/7W	Check Price

Bulb Specifications

Description	Type	Shop
ANSI standard (US & Canada). Dual-filament wedge bulb (T25). 12V, 27W/7W.	3157	Check Price

Other Locations

Additional Notes

The 3157 is the daytime running light bulb size specified for the Chevrolet Avalanche across the 2007-2013 model years.
The 3157 is an ANSI-standardized bulb type recognized in both the United States and Canada, meaning it conforms to a defined set of electrical and physical specifications shared across manufacturers.
The 3157 is a dual-filament bulb, meaning it contains two separate filaments within a single housing, each operating at a different wattage: 27W for the higher-intensity filament and 7W for the lower-intensity filament.
The bulb operates on a 12-volt electrical system, which is standard in passenger vehicles of this type.
The 3157 uses a T25 wedge base, a physical form factor that determines how the bulb seats and locks into its socket.
The dual-filament design of the 3157 allows it to serve multiple lighting functions within a single socket position, which is relevant when considering replacement compatibility.
A single-filament substitute would not replicate the full electrical behavior of the 3157, as it would lack one of the two wattage outputs the socket is designed to use.