GMC Savana Automatic Transmission Indicator Bulb Size

The GMC Savana automatic transmission indicator bulb uses a PC74 size for this component. The replacement chart covers vehicle production spanning 1996 to 2002.

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 automatic transmission indicator across all listed model years, spanning 1996-2002.
The PC74 is a miniature wedge bulb built to the T5 form factor, a designation that refers to a tubular glass envelope roughly 5/8 of an inch wide.
Unlike standard wedge bulbs, the PC74 uses a printed circuit board twist-lock socket, which means it is not interchangeable with conventional wedge-base sockets of the same size.
The PC74 operates at 12 volts and draws 1.4 watts, placing it among the lower-wattage bulbs used in automotive instrument cluster applications.
The bulb conforms to ANSI standards recognized in both the United States and Canada, indicating a standardized specification rather than a proprietary one.
Its application is specific to instrument clusters, where the printed circuit board socket design is a common mounting method for indicator and backlighting functions.