Rear end squeak

[usmc1217]

Hey all
I have a ‘21 ram 1500 limited with about 58k miles

I noticed a distinct squeak (like metal and rubber rubbing against each other)
About 3 days ago and it has progressively been getting worse.

It first started when vehicle was moving 25-30mph but would stop around 65mph+

Now it’s to the point where it’s constant from 1-60 mph.

So far I’ve removed the rear tires and checked the brakes. Everything looks intact, nothing stuck between the aluminum shield or no loose or missing caliper parts/clips

I sprayed all the bushings I could find with lube and still persists.

Tried driving with the tailgate down and noise is still there.

Tried manipulating just about every moveable part while under the vehicle and couldn’t replicate the noise.

I’m at a loss…

Early on when I first got the truck, I had similar issues which turned out to be tie rod ends and dealer replaced them.

 

[Douma]

Rear diff fluid perhaps? I had to bring mine in at 15k. Mine was more of a rubbing/humming at slow speed turning. They suspect the friction modifier in the diff fluid was either missed or not enough from the factory. Inspected the clutches in the LSD, fluid swap, and its been quiet and smooth since.

 

[WY-Dave]

Here is one I found back in the day. Rear cable hanger

Squeak