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Old Feb 13, 2025 | 12:54 PM
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Default Screeching noise

Hello everyone, I have a 2016 Z51 3lt A8, yesterday as I was driving home, I noticed that this screeching noise was coming from the back of my car, I thought it was my torque tube but I don't think it is after looking at a few videos regarding the sound they encountered with their torque tube being bad. The noise I'm hearing is constant doesn't change with the RPM's, don't know if anyone else has had this issue happen to them, the good thing is that I have warranty so I'm not to worried about costs but would like to just know ahead of time what might be the issue. I'm uploading a sound bite of the noise I'm hearing, on the video it kind of sounds like a diesel engine but in person is more high pitched, you can also hear this noise when standing outside the vehicle which is really embarrassing. Any help on figuring this out is greatly appreciated.
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20250213_062432.mpeg (15.48 MB, 37 views)
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Old Feb 13, 2025 | 04:01 PM
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Is drivability affected? If not, check your brake pads. There is a metal tab that will rub the rotor when the pads get low.
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Old Feb 13, 2025 | 08:33 PM
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Does the noise change with speed?
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Old Feb 14, 2025 | 01:54 PM
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Originally Posted by Stika
Is drivability affected? If not, check your brake pads. There is a metal tab that will rub the rotor when the pads get low.
The noise is constant even if I'm stopped, so I highly doubt it's the brake pads
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Old Feb 14, 2025 | 01:56 PM
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Originally Posted by kodpkd
Does the noise change with speed?
The noise doesn't change with rpm's, it's a constant noise, it sounds like a small electric pump running but just really loud
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Old Feb 14, 2025 | 11:47 PM
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Unsure if the Z51s have it, but there are coolers with fans behind the rear tires that could be making the noise.
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Old Feb 15, 2025 | 08:47 AM
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Agree. Sounds like a pump or a fan.
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