AM General Hummer front side marker bulb uses 67 size while rear side marker bulb uses P21W or 93 size. The replacement chart covers vehicle production spanning 1992 to 2001.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The AM General Hummer uses the 67 bulb for the front side marker position across all model years from 1992-2001, making it the most consistent fitment in these specifications.
The 67 is an ANSI-standard single-filament bulb rated at 12V and 8W, fitted with a BA15s bayonet base. It is a lower-wattage variant of the 1156 bulb.
The P21W is an ECE-standard single-filament signalling bulb rated at 12V and 21W, also using a BA15s bayonet base. It serves as the rear side marker bulb for the AM General Hummer across most of its production years.
Despite sharing the same BA15s bayonet base, the 67 and P21W are not interchangeable due to their differing wattage ratings of 8W and 21W respectively.
The rear side marker position on the 2000 model year AM General Hummer takes the 93 bulb rather than the P21W used in all other years covered by these specifications.
The 93 bulb is an ANSI-standard single-filament bulb with a BA15s bayonet base, rated at 12V and 13W. Like the 67, it is a lower-wattage variant of the 1156.
The 67 and 93 bulbs share the same base type and ANSI classification family, but differ in wattage output, with the 93 rated 5W higher than the 67.
The BA15s bayonet base is common to all three bulb types listed in these specifications, though the differing wattage ratings across the 67, 93, and P21W mean position-specific fitment still applies.