Still got some shuddering so I did some comparison between the left and right shock and it appears the passenger side has internally failed. Now what to do. Do I drop it off for a week at the local dealer? Or do I buy an aftermarket shock? This is when I climb on my soap box. I've bought 80+ vehicles and can tell you why the American car industry has failed, their service department sucks to no end. Sure the shock should not have failed, but the hassles I go through to remedy this problem makes me regret buying American. Have you heard this one " did you purchase a rental car agreement when you purchased your $47000 truck, You F**ken d**ksmacks.