Chevrolet Silverado Headlight Bulb Size

Additional Notes

• The 9005 and H11 bulb types are the most widely used across the Chevrolet Silverado headlight specifications, with the 9005 serving as the high beam bulb and the H11 as the low beam bulb across the majority of model years covered.
• The 9005 is an ANSI-standard single-filament halogen bulb rated at 12V and 65W with a P20d base, while the H11 is an ECE-standard single-filament halogen bulb rated at 12V and 55W with a PGJ19-2 base. Despite differing standards, both are approved for use in the United States.
• The Chevrolet Silverado low beam position used the 9006 bulb from 1999-2006 before transitioning to the H11 from 2007 onward. The 9006 is an ANSI-standard halogen bulb rated at 12V and 55W with a P22d base, and it is not interchangeable with the H11 due to different base configurations.
• The H9 is an ECE-standard single-filament halogen bulb rated at 12V and 65W with a PGJ19-5 base. It replaced the 9005 in the high beam position for halogen-equipped Silverado 2500 HD models starting in 2021, and for all halogen variants from 2022-2024. The H9 and 9005 share the same wattage but have different base types and are not directly interchangeable.
• The D5S is a low-voltage compact HID (xenon) discharge bulb rated at 12V and 25W with a PK32d-7 base, conforming to ECE standards. It operates on a fundamentally different technology than halogen bulbs and requires a dedicated ballast, making it incompatible with standard halogen sockets.
• On the Chevrolet Silverado 1500, the D5S bulb served both the high beam and low beam positions when equipped with HID headlamps, covering model years 2016-2020. This dual-position use of a single HID bulb type is a characteristic of certain projector-based HID headlamp systems.
• The Silverado 3500 HD specifications list the D5S under both HID and LED headlamp configurations for the high beam and low beam positions in 2018-2020. This indicates the D5S functioned as a discharge light source within a system also described as LED-equipped, which is consistent with hybrid headlamp assemblies of that period.
• In the 2021 model year, the Silverado 1500 and 3500 used the 9005 for the high beam under halogen configurations, while the 2500 HD used the H9. This sub-model variation means the correct bulb type for a 2021 Silverado depends on the specific HD trim, and substituting one for the other would result in a base mismatch.
• The 9005 high beam bulb and the 9006 low beam bulb share the same P-series ANSI base family but have different locking tab positions, a design feature intended to prevent accidental installation of a high-wattage high beam bulb into a low beam housing.
• From 1999-2015, the Silverado high beam position used the 9005 without sub-model variation, representing a period of uniform fitment across all trims before model-specific splits were introduced in 2016.