Chevrolet C-Series Pickup front side marker bulbs utilize 194, 168, or 67 size configurations, while rear side marker bulbs use 168 or 1895 size specifications. The replacement chart covers 1975 through 2000 model years with corresponding bulb size data.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 194 bulb is the most frequently specified front side marker bulb for the Chevrolet C-Series Pickup, covering model years 1985-2000 with the exception of 1984, along with 1988-1989. It is an ANSI-standard miniature wedge bulb in the T10 form factor, rated at 12V and 3.78W.
The 168 bulb shares the same T10 wedge form factor as the 194 but draws more power at 4.9W versus 3.78W. Both are 12V ANSI-standard bulbs, which means they occupy the same physical socket type despite their different wattage ratings.
The 168 bulb serves as the front side marker for model years 1980-1984 and also covers the rear side marker position for 1975-1979 and 1985-1986, making it the most broadly applied bulb across both positions in the specifications.
The 1991-1990 front side marker entries for the 194 bulb carry a conditional note specifying fitment only on trucks equipped with Halogen Capsule Headlamps, indicating that headlamp configuration was a relevant factor in bulb compatibility for those years.
The 97 bulb, specified for the front side marker on the Chevrolet C-Series Pickup in 1975-1978, uses a BA15s bayonet base rather than a wedge base. This base type is physically incompatible with T10 wedge sockets, so it is not interchangeable with the 194 or 168 bulbs despite sharing the same 12V operating voltage.
The 67 bulb, used in the 1979 front side marker position, also uses a BA15s bayonet base and operates at 12V and 8W. It is a lower-wattage variant of the 1156 bulb family and is likewise not interchangeable with wedge-base bulbs.
The 1895 bulb, specified for the 1980 rear side marker, is a T5 miniature wedge bulb rated at only 0.9W. Its T5 form factor is smaller than the T10 used by the 168 and 194 bulbs, making it physically distinct and non-interchangeable with those types.
The front side marker position shows four different bulb types across the full span of the specifications, reflecting changes in socket and connector design across different generations of the C-Series Pickup platform.
All bulbs listed across both the front and rear side marker positions conform to ANSI standards applicable in both the United States and Canada, indicating consistent regulatory compliance across the specified fitment range.
The rear side marker specifications cover a narrower range of years than the front, with entries present only for 1975-1980 and 1985-1986, and all rear side marker bulbs in those years are either the 168 or 1895 type.