For the 2021 Chevrolet Traverse, headlight bulb fitment depends on the installed headlight configuration. The low beam may use a D3S bulb or an LED assembly, while the high beam is listed as either D3S or LED. Confirm the existing headlight type before ordering, since these options are not interchangeable.
The front fog light uses a 2504 LED bulb. Front turn signals and parking lights use 7444NA, and the front side marker uses 194NA. Rear lighting is primarily LED, including the brake, center stop, tail, rear turn signal, and rear side marker lights. The reverse light uses a 921 bulb.
For smaller exterior and interior applications, the license plate light may use 2825 or 98, depending on configuration. The trunk light is listed as 194 or 7441, while the vanity light uses 6612F. Check the original bulb or fixture details when servicing locations with more than one listed option.