Chevrolet S10 Dome Light Bulb Size

Additional Notes

• The Chevrolet S10 dome light specifications cover model years 1987 through 2004, with three distinct bulb sizes appearing across that span: 562, 211-2, and 212-2.
• The 211-2 and 212-2 are both ANSI-standardized festoon bulbs rated at 12V and 12W, each with a 41mm length and an SV8.5 base, making their electrical and physical profiles identical.
• Despite sharing the same voltage, wattage, length, and base type, the 211-2 and 212-2 carry different part numbers, which indicates they are catalogued as distinct fitments and should not be assumed interchangeable without verification.
• The 562 is also an ANSI-standardized festoon bulb rated at 12V and 12W, but it measures 44mm in length and uses end-cap contacts rather than an SV8.5 base, distinguishing it physically from the 211-2 and 212-2.
• End-cap contacts, as found on the 562, make electrical contact at the flat ends of the bulb, while the SV8.5 base used by the 211-2 and 212-2 relies on a bayonet-style fitting, meaning the three bulb types are not physically interchangeable.
• The Chevrolet S10 used the 211-2 bulb for model years 1987-1994, representing the longest continuous fitment of any single dome light bulb size in these specifications.
• The 212-2 bulb was specified for the S10 during model years 1995-1997, after which the 211-2 returned for the 1998 model year.
• The 562 bulb was specified solely for the 2004 model year, and its 44mm festoon format is a common size in automotive interior lighting applications across many manufacturers.
• The SV8.5 base designation on the 211-2 and 212-2 refers to a festoon base with an 8.5mm width, a standard sizing used widely in automotive dome and map light sockets.
• All three bulb sizes in these specifications conform to ANSI standards recognized in both the United States and Canada, indicating consistent regulatory compliance across the full range of listed model years.