2016-2019 GMC Sierra 1500 RGBW Flow Series LED DRL Boards Add Projector Halo:Yes they do a scanning startup

they do a scanning startup sequence

Please check state and local regulations for acceptability in on-road use

Pure white LED DRL identical to factory LED headlights

and airborne particles

2016-2019 GMC Sierra 1500 RGBW Flow Series LED DRL Boards Add Projector Halo:Yes they do a scanning startupAutoLEDTech. com 's 2016 2019 GMC Sierra 1500 RGBW or RGBW flow series LED DRL Boards are an OEM grade solution, with exact fitment, and perfect LED alignment. Simply remove the factory DRL boards and replace it with ours! Your order includes two sets of LED boards, one for each side. Upgrade your factory DRL Boards Rings with direct fitment Choose any color or pure white Integrated Switchback Amber Turn signal Bright enough to see during day Please