GMC Yukon Headlight Bulb Size

Additional Notes

• The 9005 bulb is the most frequently specified high beam type across the GMC Yukon's headlight history, appearing in model years 1992-1993, 1994-1999 (halogen capsule configurations), and 2015-2020. It is a single-filament halogen bulb operating at 12V and 65W with a P20d base, conforming to the ANSI standard used in the US and Canada.
• The H6054 is a 5x7-inch rectangular sealed beam unit rather than a replaceable bulb capsule. The entire housing assembly is replaced as a single unit. On the GMC Yukon, it served as both the high and low beam source in sealed beam configurations from 1992-1999, functioning as a self-contained optical system.
• The 2014 GMC Yukon is the only model year in the specifications that uses the 9008 bulb for both high and low beam functions. The 9008 is a dual-filament halogen bulb with a P26t base, rated at 12V with 65W on high beam and 55W on low beam, allowing a single bulb to serve both lighting functions within one housing.
• For model years 2015-2019, the low beam position offered two distinct and non-interchangeable configurations: the H11 halogen bulb for halogen capsule headlamp assemblies and the D3S for HID headlamp assemblies. These two bulb types operate on fundamentally different electrical principles and are not cross-compatible.
• The D3S is a mercury-free HID (xenon) discharge bulb with an integral ignitor, designed exclusively for projector-type housings. It operates at 42V and 35W, which differs substantially from the 12V halogen bulbs used in other configurations. Its PK32d-5 base and built-in ignitor make it physically and electrically distinct from any halogen type in the specifications.
• The H11 low beam bulb follows the ECE standard, which originates in Europe but carries US approval as well. It uses a PGJ19-2 base and operates at 12V and 55W. Its base type is not compatible with the P22d base of the 9006 bulb, which fills the low beam role in the 1992-1999 halogen capsule configurations, making the two bulbs non-interchangeable despite similar wattage ratings.
• The 9006 low beam bulb used in 1992-1999 halogen capsule configurations shares the same 12V, 55W operating rating as the H11 but uses a P22d base under the ANSI standard. The 9005 high beam and 9006 low beam used together in those years represent a paired ANSI halogen system, with each bulb dedicated to a single filament and a single beam function.
• Yukon model years 1992-1999 required fitment verification at the headlamp assembly level before a bulb type could be determined, as sealed beam and halogen capsule configurations existed simultaneously and called for entirely different replacement components. The H6054 sealed beam and the capsule-type halogen bulbs are not interchangeable within the same housing.