I’ve had a rear end clunk that has been driving me nuts for a couple months now that I have been trying to track down.
The rear end would clunk/pop on almost every turn, like something was shifting back and forth once in each direction.
I rebuilt my rear LCP swaybar links, that helped with a creak from the heim joint but the clunk was still there.
I replaced my rear panhard bushings with new oem bushings. Clunk still there.
I checked every nut and bolt, all control arms are newish with new bushings.
Figure I should check the body mounts at this point. The rear most mounts are pretty well hidden with the 4x4 labs bumper but the cut out on the bottom let me shine a light in there and what would you know, signs of shifting were slightly present.
I took the rear bumper off to access the rear mounts, removed the plastic cover to access the top of the bolt and as soon as I put a wrench on the bolt it would spin, surprisingly loose. Both sides.
I backed off the lock nut, tightened the mount up and locked it back in place. Went for a test drive before I put the bumper back on and yahoo the clunk was gone!
Tossed the bumper back on and she is good to go.
Ignore all the nasty fluid film but it kind of helped show the little bit of movement at the top of the mount sliding on the body.
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Happy Merl.