Clunk in the rear (sounds like the right side)

Damien28

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Location
Western MA
Current Ride
F-150 Tremor
Current Ride #2
Tacoma
Anyone have any issues with a clunking noise in the rear when the truck rocks side to side. I get it in a turn sometimes. 2200 miles On it, I shouldn’t have any clunks going on!
 
So incase anyone is experiencing the same noise here is the possible solution that I found after some research. Contact your dealer and give them TSB21-2253. This is the service bulletin that seems to deal with the problem. I have to talk to my dealership and see if they’ve even heard of it.

 
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I’ve got a box of steel targets in the bed that are banging around right now…..
 
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curious if you had the TSB work done, I have 4500 miles on tremor and have a clunking sound at low speeds that sounds like it is coming from right rear. Have been under truck multiple times and nothing appears to be loose?
 
I haven’t had anything done yet. It’s the leaf springs by the sound of it
 
I have the clunk. Driving me crazy. They said it was the aftermarket shocks I installed. I’m taking it back in.
 
I have the clunk. Driving me crazy. They said it was the aftermarket shocks I installed. I’m taking it back in.
Definitely not since I haven’t changed shit. When I rock it back and forth I can hear it in the springs
 
i have stock rear shocks, have appt on Thursday
 
Just an update:
TSB 21-2253 is being performed (when parts arrive) as they isolated noise to rear leaf spring

As a side note I did mention rough downshifts (3-2-1) and occasional rough up shifts and they said they applied a TSB with reprogramming shift points...will not be able to verify until later if there is an improvement
 
Good to know I had the right TSB. I’m gonna book mine in
 
TSB work done and clunking is gone, they ended up replacing both rear springs and brackets. Apparently there is added lubrication between blocks and spring specified by Ford.
 
TSB work done and clunking is gone, they ended up replacing both rear springs and brackets. Apparently there is added lubrication between blocks and spring specified by Ford.
Awesome. I’m gonna make an appointment for when I get back from work on the road. Glad it worked
 
Soo, i have a 2022 with 1200 miles on the clock. I started noticing the clunk a few hundred miles ago. Now i mute the radio everytime i am going up my driveway or driving in parking lots that have drainage culverts or off camber areas that might articulate the suspension. The service bulletin states that ford will put a lubricant on the springs?? Is that some sort of joke?! Grease holds dirt unless its sealed, its gonna wear off i am certain. So, has anyone remedied the issue themselves? I dont want the dealer putting a gob of grease on my springs just to silent the issue for the time being
 
Soo, i have a 2022 with 1200 miles on the clock. I started noticing the clunk a few hundred miles ago. Now i mute the radio everytime i am going up my driveway or driving in parking lots that have drainage culverts or off camber areas that might articulate the suspension. The service bulletin states that ford will put a lubricant on the springs?? Is that some sort of joke?! Grease holds dirt unless its sealed, its gonna wear off i am certain. So, has anyone remedied the issue themselves? I dont want the dealer putting a gob of grease on my springs just to silent the issue for the time being
Pretty sure the TSB has them replace the blocks and the u bolts, not just grease it.
 
I had both springs and block replaced and zero noise since
 
Is the issue with the springs due to the bushings in the ends? I’m waiting for my TSB U bolts (two weeks so far) and am pretty certain that won’t fix it. And i’m expecting that i’ll wait some more for springs and another set of single use U bolts.
 
I had my tremor for maybe 2 weeks before it started making a racket in the back. Once the snow rutted out, it was insanely clunky in the back! I didn’t want to deal with the back and forth with the dealer, (I swear it’s a waste of times for some things).

-I made my own version of these, took no time.
-deleted the link I think it won’t get approved for post, but just search spring things leaf springs into google or something like that-

Truck is now quiet as a mouse, it is eerily quiet to a point I feel like I’m driving someone else’s vehicle. If the rubber I used doesn’t last I’ll actually order a set from that site.

Hope it helps, I swear it’s like a different truck now.
 
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Pretty sure the TSB has them replace the blocks and the u bolts, not just grease it.
They replace the ubolts because they aren’t meant to be reused, the block they do not. They just take everything apart, clean and grease, install new ubolts.
 

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