Ford F-350 diesel truck, 2012 King Ranch ?

There's a muffled knocking sound coming from the left rear area when I hit bumps at slow speed. I've already replaced the body mounts which helped some.
David Mc. (Florida), February 2017


done
Shock absorber? shock mount? Spring broken? Spring Mount? Anti-roll bar mount/joint? Illegal immigrant rrapped underneath?

XXX, February 2017
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