GMC Savana Check Engine Bulb Size

The GMC Savana check engine bulb uses a PC74 size bulb for this model. The replacement chart covers vehicle production years spanning 1996 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
1996-2002	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 GMC Savana uses the PC74 bulb for the check engine light across all listed model years, spanning 1996-2002.
The PC74 is a miniature wedge bulb of the T5 type, designed specifically for instrument cluster applications rather than exterior lighting.
PC74 bulbs operate at 12 volts with a power draw of 1.4 watts, placing them in the very low-wattage category typical of dashboard indicator lighting.
The PC74 designation follows ANSI standards recognized in both the United States and Canada, indicating a standardized specification shared across North American markets.
The PC74 uses a printed circuit board twist-lock socket, a mounting style specific to instrument clusters that differ from standard bayonet or wedge base sockets found elsewhere in a vehicle.
The twist-lock socket design of the PC74 means it is not directly interchangeable with standard T5 wedge bulbs that use a simple push-in base, despite sharing the same T5 envelope size.