They really clicked once I figured out how to lift it up far enough to bolt them on. I put a small jack between the axle and the rubber on the frame. I had to twist it all the way, but he entered without much effort. Rear lift approx. 2 inches. This Z71 SUV. It works and I would definitely recommend them to anyone who needs a little extra support in the back. He definitely doesn't squat with loads like he used to. Very happy. Thank you and God bless