Rear end squeaking noise

cptcrush said:

My 2017 with 35K on has developed and obnoxious squeaking noise coming from the area of rear suspension. While I am pretty certain that it is not leaf springs or shocks, I can locate the source of the sound. Listening close to shock mounts and leaf spring bushings doesn't seem like the cause. To me it sounds like a rubber rubbing against metal. Likely dirt stuck somewhere. I have washed and lubed every place I could find and some of the noise went away. My best guess is that it is coming from places where bed mounts onto the frame. Hoping that someone was clever to have this issue and found exactly where dirt is collecting causing the noise. I suspect that frequent offloading will continue to cause the noise so any help from someone that experienced it would be awesome. Ideas appreciated. Moving bed up and down is how I recorded the sound. Video amplified the sounds so it really sounds much worse than it really is.
https://photos.app.goo.gl/XYrmZETLenLrWKFZ7

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Raptorguy1 said:

Probably urethane bushings. I had a 14 Mustang and had a lot of suspension mods done to it and the bushings groaned and squeaked something fierce.

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Brian Haines said:

I have this exact same squeaking noise on my 2018 Raptor with about 21k miles. I'm still going through the process of hosing the rear suspension parts with silicone lubricant in an attempt to isolate the source. My hunch is where the shackle attaches the leaf spring to the rear of the frame. I can usually make the noise abate by hosing the entire underside of the truck with water.

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Antho said:

check your tailgate. Mine has been squeaking on the rubber bumper up top.

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