GMC Sonoma Dome Light Bulb Size

The GMC Sonoma dome light uses bulb size 562 or 211-2 depending on the specific vehicle configuration and internal lighting assembly. Data for the lighting components covers the range from 1995 to 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
2002-2004	562
1995-2001	211-2

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, 44mm length, end-cap contacts. 12V, 12W.	562
ANSI standard (US & Canada). Festoon bulb, 41mm length, SV8.5 base. 12V, 12W.	211-2

Other Locations

Additional Notes

The GMC Sonoma dome light uses two distinct bulb sizes across its model years, with the 211-2 fitted to 1995-2001 models and the 562 fitted to 2002-2004 models.
Both the 562 and 211-2 are festoon-type bulbs, meaning they are cylindrical in form and mount horizontally between two spring-loaded contacts within the dome light housing.
Both bulbs share identical electrical ratings of 12 volts and 12 watts, making them equivalent in power draw despite their physical differences.
The 562 bulb measures 44mm in length and uses end-cap contacts, where the electrical connection is made at each flat end of the bulb.
The 211-2 bulb measures 41mm in length and uses an SV8.5 base, a designation that refers to a specific festoon base standard with a nominal width of 8.5mm.
The 3mm difference in length between the 562 and the 211-2 means the two bulbs are not directly interchangeable, as festoon housings are sized to hold a specific length under spring tension.
Both bulbs conform to ANSI standards recognized in the United States and Canada, indicating standardized physical and electrical specifications across manufacturers.
The SV8.5 base designation on the 211-2 distinguishes it from other 41mm festoon bulbs that may use different base configurations, which is a relevant factor when sourcing a replacement for 1995-2001 GMC Sonoma models.