The GMC P152 high beam and low beam headlight bulbs both utilize the H6006 size. The replacement chart covers 1950 to 1951 production years 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 H6006 is an ANSI-standard sealed beam unit used in the United States and Canada, operating at 12 volts in a 5x7-inch rectangular form factor.
As a sealed beam design, the H6006 does not contain a replaceable bulb element. When the unit fails, the entire assembly is replaced as a single component.
The GMC P152 uses the H6006 for both high beam and low beam functions across the 1950-1951 model years, meaning a single sealed beam unit serves both lighting roles.
The shared H6006 fitment across high and low beam positions indicates the P152 relies on a dual-function sealed beam arrangement rather than separate dedicated units for each beam type.