Chevrolet Avalanche Fog Light Bulb Size

Chevrolet Avalanche front fog light bulbs use a 5202 size bulb for this model. The replacement chart covers 2007 to 2013 vehicle production years 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.

Front Fog Light

Years	Bulb Type	Shop
2007-2013	5202	Check Price

Bulb Specifications

Description	Type	Shop
ANSI standard (US & Canada). Single-filament halogen bulb with PG20-3 base. 12V, 24W.	5202	Check Price

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Additional Notes

The 5202 bulb is the sole front fog light specification across all listed model years of the Chevrolet Avalanche, covering 2007-2013.
The 5202 is a single-filament halogen bulb, meaning it serves one lighting function only and does not combine fog and running light duties within a single unit.
It operates at 12 volts and 24 watts, which places it at a relatively low wattage compared to many other halogen fog light bulbs, reflecting a design priority for focused beam output over raw brightness.
The 5202 uses a PG20-3 base, a proprietary wedge-style base type that is not universally interchangeable with other common fog light bases such as H10 or H11, despite some aftermarket cross-referencing between these types.
The 5202 is classified under the ANSI standard applicable in the United States and Canada, indicating it conforms to North American bulb standardization rather than ECE regulations used in other markets.
Because the PG20-3 base has a specific pin configuration, substituting bulbs with visually similar bases without confirming base compatibility risks improper seating and potential electrical or fitment failure.