X31 or z71 or at4 /trail boss comes with the “upgraded” rancho shocks. They are junk. It seems like the rebound is set way to high to give the truck a firm ride and off-road shock feel, pair that with cheap seals and valves/internal parts , you end up with the rough ride your getting. Gm needs to start putting a better premium shock. before someone ends up in a bad accident because of the ass of the truck can’t stay planted to ground. You can’t even drive on a gravel road.