Chevrolet Volt Dome Light Bulb Size

Additional Notes

• The Chevrolet Volt uses the 194 bulb for the dome light across all listed model years, spanning 2011-2015.
• The 194 is an ANSI-standardized bulb type, meaning its specifications are governed by a recognized North American standard applicable in both the United States and Canada.
• It belongs to the T10 miniature wedge family, a form factor defined by a wedge-shaped base that seats directly into a socket without a separate metal cap or pins.
• The bulb operates at 12 volts, consistent with the standard electrical system voltage found in passenger vehicles.
• Its rated wattage of 3.78W places it in the low-power range, which is typical for interior courtesy lighting applications such as dome lights.
• The wedge base design of the T10 means the bulb is held in place by the tension of the socket itself rather than by a bayonet or screw mechanism, making direct replacement straightforward without additional hardware.
• Because the 194 specification is consistent across the entire 2011-2015 Volt production run, a single bulb type serves all five model years without variation in fitment.