Chevrolet Avalanche Courtesy Bulb Size

The Chevrolet Avalanche courtesy light requires a 212-2 bulb size for proper installation and function within the interior lighting system. Data for the specified component covers the range from 2007 to 2013.

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
2008-2013	212-2 (2nd Row)
2007	212-2 (Rear, For Vehicle Without Single Display Entertainment System Rear Seat Remote Control With Headphone)

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, 41mm length, SV8.5 base. 12V, 12W.	212-2

Other Locations

Additional Notes

The 212-2 is the sole bulb type specified across all courtesy lighting positions in the Chevrolet Avalanche data provided, covering model years 2007-2013.
The 212-2 is a festoon-style bulb, meaning it is cylindrical and held in place by contact at both ends rather than by a screw or bayonet base.
It carries an SV8.5 base designation, which refers to the end-cap contact style standard for festoon bulbs of this size class.
The bulb operates at 12 volts and draws 12 watts, consistent with standard automotive interior lighting circuits.
Its length is 41mm, a specification that directly governs physical fitment within the courtesy light housing; substituting a bulb of a different length risks poor contact or housing damage.
The 212-2 conforms to ANSI standards recognized in both the United States and Canada, indicating a standardized specification rather than a proprietary part.
For the 2007 Chevrolet Avalanche, the 212-2 is specified for the rear courtesy position only in vehicles without a Single Display Entertainment System rear seat remote control with headphone, indicating a trim-level dependency for that year.
For model years 2008-2013, the 212-2 is assigned to the second-row courtesy position without any noted trim or equipment exclusions.