Chevrolet Celebrity Check Engine Bulb Size

The Chevrolet Celebrity check engine light requires a bulb size of 194 for proper illumination of the instrument panel. Data for the specified component covers the range from 1988 to 1990.

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
1990	194
1988	194

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W.	194

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Additional Notes

The 194 is the bulb type used for the check engine indicator in the Chevrolet Celebrity across the recorded model years.
The 194 bulb follows the ANSI standard, meaning it conforms to a recognized North American specification applicable in both the United States and Canada.
It is a miniature wedge-base bulb, classified under the T10 form factor, which refers to a tubular envelope roughly 10 eighths of an inch in width.
The bulb operates at 12 volts with a power draw of 3.78 watts, consistent with low-current indicator lamp applications in automotive instrument panels.
The wedge base design means the bulb is held in its socket by the tension of the base contacts rather than by a bayonet or screw fitting, which affects how it is seated and removed.
Both the 1988 and 1990 Chevrolet Celebrity share the same 194 bulb specification for this application, indicating fitment interchangeability between those two model years for this position.