Chevrolet Silverado Dome Light Bulb Size

Additional Notes

• The 212-2 bulb is the dome light specification for the Chevrolet Silverado across model years 2007-2014, with the 2014 model year restricted to the 2500 and 3500 HD trims only.
• The 211-2 bulb serves as the dome light specification for model years 1999-2005, as well as the 2006 Silverado 1500.
• The 578 bulb applies to the 2500 and 3500 HD trims for the 2003 and 2006 model years, representing a trim-specific fitment that differs from the 1500 in those same years.
• All three bulb types, the 212-2, 211-2, and 578, share identical physical and electrical ratings: festoon-style construction, 41mm length, 12 volts, and 12 watts.
• The 212-2 and 211-2 both use an SV8.5 base, which is a bayonet-style end cap common in festoon automotive bulbs, while the 578 uses end-cap contacts rather than an SV8.5 base.
• Because the 578 uses a different contact style than the 211-2, the two bulbs are not interchangeable despite sharing the same physical length, voltage, and wattage.
• All three bulb types carry ANSI standard designations valid in both the United States and Canada.
• The 212-2 and 211-2 share the same base type, physical length, voltage, and wattage, though they carry distinct ANSI designations and are listed as separate specifications across different model years.