Chevrolet C-Series Pickup Courtesy Bulb Size

Chevrolet C-Series Pickup courtesy bulb sizes include 1003, 211-2, and 194 bulb options. The replacement chart covers vehicle production spanning 1975 to 2000.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Bulb Size by Year Range

Years	Bulb Size
2000	1003
1999	211-2
1998	194
1997	1003
1994-1996	194
1993	168
1988-1991	1003
1986	194
1985	168
1983-1984	1004
1982	1004 (With 4 Headlamps)
1980-1981	1004
1979	1003
1978	1142
1977	211-2
1975-1976	1142

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W.	1003
ANSI standard (US & Canada). Festoon bulb, 41mm length, SV8.5 base. 12V, 12W.	211-2
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W.	194
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W.	168
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. Variant of 1157. 12V, 21/5W.	1004
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. Variant of 1157. 12V, 21/5W.	1142

Other Locations

Additional Notes

The courtesy bulb specifications for the Chevrolet C-Series Pickup span model years 1975 through 2000, with six distinct bulb sizes appearing across that range: 1003, 211-2, 194, 168, 1004, and 1142.
The 1003 is the most frequently specified bulb across these years, appearing in 1979, 1988-1991, 1997, and 2000. It is a single-filament, BA15s bayonet base bulb rated at 12V and 21W under the ANSI standard.
The 194 is the second most common specification, covering 1986 and 1994-1996, and again in 1998. It is a miniature T10 wedge bulb rated at 12V and 3.78W, making it considerably lower in wattage than the 1003.
The 1004 is specified for 1980-1984, with a conditional note for 1982 indicating it applies to vehicles equipped with four headlamps. It is a dual-filament bulb with a BAY15d bayonet base, rated at 12V and 21/5W.
The 1142 is listed for 1975-1976 and 1978. Like the 1004, it uses a BAY15d bayonet base and carries a 12V, 21/5W dual-filament rating, and both are classified as variants of the 1157 bulb family.
Although the 1004 and 1142 share identical electrical ratings and the same BAY15d base type, they are distinct ANSI part numbers and are not listed interchangeably within these specifications.
The 168 bulb is specified for 1985 and 1993. It shares the T10 wedge form with the 194 but operates at a slightly higher wattage of 4.9W versus 3.78W, meaning the two are not direct substitutes despite their physical similarity.
The 211-2 festoon bulb is specified for 1977 and 1999. At 41mm in length with an SV8.5 base, its physical format differs entirely from the wedge and bayonet types used in other years, and it is rated at 12V and 12W.
The BAY15d base used by both the 1004 and 1142 features offset pins, which prevents incorrect installation by ensuring the bulb seats in only one orientation, a relevant fitment characteristic for dual-filament applications.
All six bulb sizes in these specifications conform to ANSI standards applicable in both the United States and Canada, indicating consistent regulatory classification across the full range of listed model years.