NH_Silverado_6.2

So I did some more research at the dealer. I looked at a bunch of 2016 Silverado's and one 2017 Denali. None of them were max trailering. None of them have a rear spring clip. I still think this could allow spring slap. But could that cause a resonance? Also found this really good site on springs and clips. It says that your spring clip should have a gap above the spring and on sides to allow the springs to slide. Maybe it is less critical to slide if clamp is located near the U-bolts. http://www.suspensionspecialists.com/tech0004.html#9 No spring clips yet and my vibes seem to be less when Duratrac tires are at 35PSI on hot day (85-90F).

Hey guys, I just bought a 2016 LTZ Midnight (Z71). 40 to 80MPH vibe issues. Had the roadforce balancing which helped, but still randomly vibrating 40-80. Also have horrible roadhop around this corner that my 2011 would take no problem. I'm curious about the missing rear spring clamp. I just checked mine and it does not have rear spring clamps either. I'm wondering if this is causing a slapping vibration. Did anyone try adding those extra clamps in where a rear clamp would typically be? Does anyone with a 2014-2017 Silverado/Sierra have rear spring clamps installed from the factory?