Probably something like that because they did use LED for the Morimoto NNBS Silverado ones. The DRL has a separate optic that uses amber LED’s that can be run sequential or constant on/off. I think if they could have done that with the Yukons, they would have. Too bad I have so much $$$ into my retrofits, I’d like to see what these look like but they ARE $1000.I agree but I hope the build quality is good for the rest of it I can deal with the turn signal part, maybe they didn't do it because these dam yukons have some weird wiring for the lights, remember the issue with getting the resistor working correctly?