GMC Sonoma License Plate Bulb Size

The GMC Sonoma license plate light utilizes bulb sizes 192, 194, and 67 depending on the specific version of the vehicle. Provided information covers a time range from 1991 through 2004.

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
1998-2004	192
1994-1997	194
1993	67
1991-1992	194

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3W.	192
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W.	194
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Lower wattage variant of 1156. 12V, 8W.	67

Other Locations

Additional Notes

The GMC Sonoma uses three distinct bulb types across its model years for the license plate position: the 192, 194, and 67.
The 192 and 194 are both T10 miniature wedge bulbs operating at 12 volts, though they differ in wattage. The 192 draws 3 watts, while the 194 draws 3.78 watts.
Both the 192 and 194 conform to ANSI standards recognized in the United States and Canada, and their shared T10 wedge base form factor means they are physically interchangeable in many sockets, though the wattage difference should be noted for any substitution.
The 192 bulb is specified for the GMC Sonoma across the 1998-2004 model years for the license plate position.
The 194 bulb appears in the 1991-1992 and 1994-1997 model years.
The 1993 GMC Sonoma is the sole model year in these specifications to use the 67 bulb for the license plate position.
The 67 bulb is rated at 8 watts, making it significantly higher in power draw than either the 192 or 194. It uses a BA15s single-contact bayonet base rather than a wedge base, meaning it is not physically interchangeable with the T10 bulbs used in other Sonoma model years.
The BA15s bayonet base of the 67 bulb is the same base family used by the 1156, though the 67 operates at a lower wattage than that bulb.