Be aware the Pullrites do not adjust much up or down. Actually all mine does is go up 3.5 inches with some extra hardware. I know other hitches have several pin holes for more adjustment.
Also, the Silverados are much taller than the older models. I went from 2006 to 2012 and the bed was 1 1/2 inches higher and the side rails were an additional inch taller. Hence the you have to raise the pin box to avoid the rails but the additional height may make you ride nose high.
However, I do like the automatic slider. It gives one peace of mind. And I have made nearly 90 degree turns several times when in tight spots. Some of the newer fivers have rounded corners on the front that supposedly allow turning to something like 80-85 degrees with no slider.