Chevrolet Beretta Check Engine Bulb Size

The Chevrolet Beretta check engine light requires bulb sizes PC74, PC37, or 74 depending on the specific version. Data for the light covers the range from 1989 to 1994.

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
1994	PC74
1993	PC37
1991	PC37
1989	74

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T5) with printed circuit board twist-lock socket, for instrument clusters. 12V, 1.4W.	PC74
ANSI standard (US & Canada). Miniature wedge bulb (T5) with printed circuit board twist-lock socket, for instrument clusters. 12V.	PC37
ANSI standard (US & Canada). Miniature wedge bulb (T5). 12V, 1.4W.	74

Other Locations

Additional Notes

The check engine indicator on the Chevrolet Beretta uses three distinct bulb types across its production years: the PC74, PC37, and 74, all of which conform to ANSI standards recognized in both the United States and Canada.
All three bulb types share the T5 miniature wedge form factor, a small wedge-base design commonly used in instrument cluster and warning light applications due to its compact profile.
The PC74 and PC37 types feature a printed circuit board twist-lock socket, which is a mounting interface designed specifically for direct integration into printed circuit board panels found in instrument clusters, distinguishing them from the standard 74 bulb.
The 1994 Chevrolet Beretta uses the PC74, which operates at 12V with a rated wattage of 1.4W, matching the wattage of the standard 74 bulb used in the 1989 model year.
The PC37, fitted to the 1991-1993 model years, carries a 12V rating but has no wattage value listed in its specification, unlike the PC74 and 74 types.
Although the PC74 and the standard 74 share the same T5 wedge form factor and identical 12V/1.4W electrical ratings, the PC74 incorporates a twist-lock printed circuit board socket, making the two types non-interchangeable despite their similar electrical characteristics.
The standard 74 bulb used in the 1989 model year lacks the printed circuit board socket interface present on the PC-series types, reflecting a different instrument cluster mounting system for that year.