Chevrolet Silverado Check Engine Bulb Size

The Chevrolet Silverado check engine bulb uses a PC74 size for this specific lighting component. The replacement chart covers vehicle production years from 1999 to 2002 with corresponding bulb size specifications.

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	US Type	EU Type	Shop
1999-2002	PC74	T5+PCB	Check Price

Bulb Specifications

Description	Type	Shop
ANSI standard (US & Canada). Miniature wedge bulb (T5) with printed circuit board twist-lock socket, for instrument clusters. 12V, 1.4W.	PC74	Check Price

Other Locations

Additional Notes

The PC74 is the bulb type used in the Chevrolet Silverado check engine light position across the 1999-2002 model years.
The PC74 is classified as a miniature wedge bulb built to the T5 form factor, which refers to a tubular glass envelope roughly 5/8 of an inch wide.
It operates on a 12-volt electrical system and draws 1.4 watts, placing it among the lower-wattage bulbs found in automotive instrument cluster applications.
The PC74 uses a printed circuit board twist-lock socket, a mounting style specifically engineered for direct integration into instrument cluster circuit boards rather than conventional wiring harnesses.
The PC74 conforms to ANSI standards recognized in both the United States and Canada, meaning it meets a defined set of electrical and physical tolerances shared across compliant products.
The twist-lock socket design of the PC74 means it is not interchangeable with standard wedge-base bulbs of the T5 size, as those use a friction-fit base rather than a rotating lock mechanism.