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Squeal in rear end can’t pinpoint?

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1.8K views 11 replies 7 participants last post by  Blackmax65  
#1 ·
This past winter I replaced rear rotors, pads, and E brake shoes. I drove it around and all seemed good. I towed my boat to the lake and when I got to the launch realized I didn’t adjust the slack back out of the E brake cable. Nothing bad happened, it just didn’t hold on the launch. When I left to go home I noticed a chirp or slight squeal in the rear. At first I thought it was the E Brake, but after I got home and hooked the boat it never happened again.

Later that week I went to Home Depot and picked up some paver stones, not a lot, maybe 250lbs worth. When I left the lot I heard the chirp/squeal again. I thought at first brakes because when I apply brakes it would go away, but I found it didn’t go away it just became less obvious.

When I got home I removed the pavers and adjusted my E Brake cable. The next day with a empty load their was no noise. Went and got mulch and about half way home it did it again. At this point I thought U joints. Bought 2 new U joint at the dealer and installed the rear one next to the differential because it was a SOB to get off the truck and was super tight and didn’t want to move without using a hammer. The front one seemed okay.

Drove the truck home with nothing behind me or in the bed and all seemed fine until I got on my street and the noise came back. I’m at a loss because it was only doing while under a load but not doing it empty. Any ideas?
 
#2 ·
Squeal in rear end can't pinpoint? Probably Taco Bell.


Sorry, couldn't resist. I'm actually a 12 year old trapped in an adult's body.

When it happens, is it a constant squealing while the truck is in motion, or intermittent like when a rotor is slightly warped? And is it a metal squealing or a rubber squealing sound? I assume it's metal since you first checked brakes.
 
#3 ·
Leaf spring bushings? Maybe the water at the launch was just enough to set it over. Or you got some crud in there.

Do you notice it more or less over bumps? Only during braking ? With body roll?
 
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#4 ·
It’s random, but more common when towing. It’s not all the time, it comes and goes. At first it went away while braking but now it still makes the noise just not as bad. I really only notice it when driving straight.
 
#5 ·
It’s only when the truck is in motion and it’s consistent with tire rotation
 
#7 ·
Any chance you can get it on video? Wonder if you got a stone or something under the leaf pack.

I would start by pressure washing every aspect of rear end suspension components. Ensure to get between the brake rotor and dust cover as well. Then WD40 everything under there. Or if your bored, remove the rear brakes again and reassemble. Maybe something just isn't fully seated properly
 
#8 ·
when I first noticed the issue my passenger side rotor was warm. I took the tire off and blew air in between the pads and back near the E Brake the best I could. As far as quality I just bought what O Reilys recommended. I’ve never heard of the anti squeal on the back of the pad?? I did put grease in the slides.
I’ll dig into it some more, just dreading taking the hub off. Such a pita
 
#12 · (Edited)
Does the e-brake hold now? Is differential fluid looking good? Maybe lower the spare and you will find a rock or something up against the frame? Something else it could be if it started after the brake work, is the ebake pads need to be run-in, like apply the e-brake slightly when rolling slowly, release and repeat a few times.