Clunking Noise in Rear End

[Introvertedhiker]

I just picked up a 21 XLT yesterday and didn't notice this issue during the test drive. But it clunks anytime I turn with an incline / decline.

I love the truck but this will be my 3rd f150 with an issue within the first week of purchase.

Had an 11 lariat that had a grinding / scraping noise when turning and applying brakes. Ford told me it was normal and could never find the issue. I eventually gave up trying and sold the truck a year later.

Bought a 15 lariat and had bad shaking when going 70+ mph. Ford had the truck for about 2 weeks and discovered it was one of the factory wheels causing the issue. Had no other problems with that truck.

Guess I'll call the dealership back tomorrow and see if the info here is truly a good fix and that they won't have my truck for weeks on end.

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[DaftJak]

After the dealership having my truck for two days, they found the problem. I can say as of right now, there is no more noise.

Hitting up my dealership with this info tomorrow. Thank you for posting this!

 

[MrEmGallegos]

Hitting up my dealership with this info tomorrow. Thank you for posting this!

I hope it helps!

 

[Steve H]

I am thinking Ford had someone on the assembly line that gun didn't set the torque gun correctly?

 

[MrEmGallegos]

I am thinking Ford had someone on the assembly line that gun didn't set the torque gun correctly?

Or a machine lol

 

[Lpetters84]

Good point. Mine was built on 6/22. Is everyone else builds around the same date range?

 

[MrEmGallegos]

Good point. Mine was built on 6/22. Is everyone else builds around the same date range?

How do you look that up?

 

[Steve H]

If you have the original factory window sticker / build sheet there is a build date on the bottom of it.

 

[platinum17]

Good point. Mine was built on 6/22. Is everyone else builds around the same date range?

7/7 Dearborn Assembly here.

 

[MrEmGallegos]

Dearborn
5/4/21

 

[Lpetters84]

How do you look that up?

You’ll see the blend date on your window sticker.

 

[Roger1108]

You’ll see the blend date on your window sticker.

6/27/21 build date, dearborn. PB 4x4 Lariat 6.7 bed, max tow, Blue prep,

 

[quartzlariat]

Well picked up mine last night(7/22 blend Dearborn) and sure enough pulling in my driveway with 53 miles on the trunk clunking noise coming from the rear. Contacted my dealer immediately and they are putting same parts as my fathers truck on order( rear u-bolts and nuts)

 

[KYLeadfoot21]

Good point. Mine was built on 6/22. Is everyone else builds around the same date range?

My 1st one was built 12/17/20
2nd 6/16/21
Both make the noise
Both built at Dearborn

 

[zamco17]

I like many others had this happen to my 2021 FX4 that I bought just this past Thursday. I took the work order that MRem Gallegos had posted with me to the service manager yesterday. They tried what was done to his truck but to no avail. He did say ford knows about this issue as its popping up a lot, and this is all over the forums that the mechanics at Autonation use to communicate. It even happened to another f150 sold the next day. They basically said they are waiting for a fix from ford, not a recall but a bulletin to let all service centers know. So we shall se what happens in the future. Juts wanted to let you guys how my experience with this problem went. Many thanks for all the input!

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