These aren't the best as far as output goes, but it at least gives you an idea of the styling and LED lines. Believe me when I say that you'll be blown away by these things.
Mine works perfectly on my truck and it has a 2" lift. It switches to low beam at the right time when it senses oncoming traffic. It's disabled when you use the foglight. That's the only frustrating part. Mine came bundled with it as part of the Safety features that includes the new Lane Keep that will actually steer the truck back into the lane if it goes over the lines.
I just traded in my 2014 Sierra for a 2016. I was going to get a '15 with the 20% discount but was offered the same deal on a new '16. Night and day difference between the models. The LED lighting is amazing and Apple Carplay is a huge plus. The dealership also added in a 2" RC lift and Nitto Terra Grappler G2 tires.
2" RC lift with 275/60r20 toyo open country at 2's.
Couldn't resist replacing the grille after seeing a couple of example on these forums.
Just wished it had come with the front license plate cover instead of two drilled holes in the center plastic plate.