Chevrolet Trax front and rear turn signal bulbs utilize 7440NA and 7440 bulb sizes, with front applications requiring the 7440NA size exclusively. The replacement chart covers vehicle production spanning 2015 to 2024, detailing bulb size specifications across this model generation.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 7440NA is the dominant bulb type across the Chevrolet Trax turn signal specifications, appearing in both front and rear positions across the majority of model years covered.
The 7440NA is a single-filament wedge bulb following the T20 form factor, rated at 12 volts and 21 watts, and meets ANSI standards for the US and Canadian markets.
The defining characteristic of the 7440NA is its natural amber glass envelope, which produces the amber color required for turn signal use without relying on a colored lens or housing.
The 7440 shares the same T20 wedge form factor, voltage, wattage, and ANSI compliance as the 7440NA, but its glass envelope is clear rather than amber-tinted.
The front turn signal on the Chevrolet Trax uses the 7440NA across all listed model years, from 2015 through 2024, with no variation in that position.
The rear turn signal on the 2024 Chevrolet Trax uses the 7440 rather than the 7440NA, which sets it apart from the 2015-2021 rear turn signal fitment.
Because the 7440 and 7440NA share the same physical T20 wedge base, they are mechanically interchangeable, but substituting a 7440 for a 7440NA in a position that depends on the bulb itself for amber output may affect the color of the emitted light.
Single-filament construction in both bulb types means each serves only one lighting function, as opposed to dual-filament bulbs that can serve two functions such as turn signal and brake light simultaneously.