Chevrolet Sonic headlight bulbs utilize 9005 size for high beam and H11 size for low beam applications. The replacement chart covers 2017 through 2020 model 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.
The Chevrolet Sonic (2017-2020) uses the 9005 bulb for high beam headlights across all four model years covered in these specifications.
The 9005 is a single-filament halogen bulb rated at 12V and 65W, built to the ANSI standard used in the United States and Canada, and it seats into a P20d base.
The H11 is the specified low beam headlight bulb for the Chevrolet Sonic across the same 2017-2020 model year range.
The H11 operates at 12V and 55W, making it a lower-wattage bulb than the 9005 used in the high beam position. It uses a PGJ19-2 base and follows the ECE standard, though it also carries approval for use in the United States.
Both the 9005 and H11 are single-filament designs, meaning each bulb serves only one lighting function rather than combining high and low beam output within a single unit.
The P20d base of the 9005 and the PGJ19-2 base of the H11 are physically distinct and not interchangeable, so substituting one bulb type for the other is not possible without a socket mismatch.
The difference in regulatory standards between the two bulbs, ANSI for the 9005 and ECE for the H11, reflects separate international frameworks for bulb performance and safety, though both standards are accepted in the North American market.