Hey Georgiey,

I had a mystery squeak and occasional rattle from the rear. I had a friend jump up and down on the trailer hitch while I crawled underneath. It turns out that it was the lower mount of the driver side rear shock. There was a tiny bit of slop. Basically the misalignment spacers were just a whisker narrower than the post that they mount to. When the bolt was torqued tight, the misalignment spacer could still wiggle around and make noise.

I found a 1/32 spacer washer at Home Depot of all places (after looking everywhere) that solved the problem completely for $0.75. It goes on the post, and then the shock, and then the retaining bolt. It’s worth checking out if that’s where your noise is coming from.