Chevrolet Trax Dome Light Bulb Size

The Chevrolet Trax dome light utilizes 12961 and 6411 bulb sizes for interior illumination across various production versions. Available data covers the specific time range from 2015 through 2024.

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
2024	12961
2021	12961
2015-2020	6411

Bulb Specifications

Description	Bulb Size
Philips part number. Miniature wedge bulb (T10) with W2.1x9.5d base. 12V, 5W.	12961
ANSI standard (US & Canada). Festoon bulb, 36mm length, SV8.5 base. 12V, 5W.	6411

Other Locations

Additional Notes

The Chevrolet Trax dome light uses two distinct bulb types across its model years: the 12961 and the 6411. These are not interchangeable, as they differ in both physical form and base type.
The 2015-2020 Trax uses the 6411 bulb for the dome light. This is an ANSI-standard festoon bulb recognized in both the US and Canada.
The 6411 is a festoon-style bulb, meaning it is cylindrical and held in place by spring clips at each end rather than inserted into a socket. It measures 36mm in length and uses an SV8.5 base, operating at 12V and 5W.
The 2021 and 2024 Trax use the 12961 bulb for the dome light. This is a Philips part number designation rather than an ANSI standard number.
The 12961 is a miniature wedge bulb in the T10 form factor. It uses a W2.1x9.5d base, which is a wedge-type base that inserts directly into a friction-fit socket without a separate locking mechanism. It also operates at 12V and 5W.
Both the 6411 and the 12961 share the same voltage and wattage ratings of 12V and 5W, but their base types are fundamentally different. Installing a wedge bulb in a festoon holder, or vice versa, is not physically possible without modification.
The T10 designation of the 12961 refers to a tubular bulb shape approximately 10 eighths of an inch wide, a sizing convention common in miniature automotive bulbs.
The SV8.5 base of the 6411 is a standard festoon base designation, where the number indicates the contact cap width in millimeters. This base type is widely used in interior automotive lighting across many manufacturers.