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Rear end creaking sound at slow speeds (not seat latch)

256Mustang

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With about 16,000 miles on the car and I'm guessing 6,000 miles on the relevant/possibly related suspension mods, I'm noticing what sounds to me like rear end suspension creaking, or tapping. It is somewhat intermittent. My first thought was to retorque the Steeda IRS sub-frame braces, my second thought was to grease the rear seat latches but no luck. Also tried putting seats down. I've also reached out to Steeda who said they're not sure. My next step is visiting a Ford dealer.

I have a 2024 Mustang GT Premium with Performance package, MagneRide and,

Relevant suspension mods:
  • 555-5754 - Steeda IRS Subframe Support Braces
  • 555-4437 - Steeda IRS Subframe Bushing Support System
  • 555-4438 - Steeda IRS Subframe Alignment Kit
Other ideas?
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GooberDH

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My creaking was the latches for the back seats that hold them when not folded. Some grease and they've been quiet.
 
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256Mustang

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My creaking was the latches for the back seats that hold them when not folded. Some grease and they've been quiet.
I addressed that scenario twice in that post. If it isn't fixed by grease on/around the witness marks (where you can see metal on metal contact) I'm not aware of where it is.
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