The Cadillac XT5 high beam and low beam headlight bulbs both utilize a 9012 bulb size for optimal illumination. The replacement chart covers vehicle production years spanning 2017 to 2019 with corresponding bulb specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 9012 bulb is the sole bulb type listed across all headlight positions in these specifications. It is an ANSI-standardized halogen bulb rated at 12 volts and 55 watts, fitted with a PX22d base, and recognized for use in both the United States and Canada.
The 9012 is a single-filament bulb, meaning it serves one lighting function per unit. In the Cadillac XT5, this requires separate bulbs for the high beam and low beam circuits rather than a dual-filament arrangement shared between both functions.
All listed model years of the Cadillac XT5 (2017-2019) use the 9012 bulb for both high beam and low beam positions, but only under the halogen capsule headlamp configuration.
The halogen capsule headlamp condition attached to every entry indicates that this fitment applies specifically to that headlamp type. Vehicles equipped with a different headlamp system would fall outside the scope of these specifications.
The PX22d base is a proprietary base type associated with the 9012 bulb. It is not interchangeable with more common bases such as the H11's PGJ19-2 or the 9005's SB15d, which means physical substitution with those bulb families is not supported by these specifications.
The 9012 bulb is closely related to the HIR2 designation used in international markets, sharing the same PX22d base and general construction. However, substitution between these designations is subject to compatibility considerations not addressed within these specifications.