For the 2020 Buick Envision, headlight bulb fitment depends on the factory headlight type. Models with HID headlights use D3S bulbs for both the low beam and high beam. Models with LED headlights use integrated LED lighting for both functions instead, so confirm the headlight assembly before ordering.
Fog light fitment is listed as H11 LED or H16 LED; verify the application on your vehicle before replacement. The front turn signal and parking light use 7444NA, while the rear turn signal uses 7440A. Reverse lights use 921 bulbs.
Several exterior lamps are LED-equipped, including the brake lights, center stop light, daytime running lights, front and rear side markers, tail lights, and dome, map, and trunk lights. License plate lighting may use 2825 or 98. Interior fitments also include 194 and 7441, with 7065 listed for the vanity light.