Skip the auto shop - Our mechanics make house calls

Q: SUV rear end has roaring, grinding noises

asked by on

While driving the other day, the rear end of my SUV suddenly had a roaring, very loud, humming noise. Then it turned into a grinding sound. At first, I considered that it was probably the brakes. So the inner and outer brakes and the rotors were replaced, however it made no improvement; the grinding sound still persists. Next, they replaced all four tires and performed full alignment - did not help either. I started researching and found that there have been many other drivers with this make/model who have had problems with the rear-end differential. My main concern is safety for my family and if this problem continues, the rear wheels could lock at any time. This is Very serious, scary, and dangerous. Can you tell me how I can get this fixed so I can safely drive my family in this SUV?

A: Hello. The way to fix this problem is to re...

Hello. The way to fix this problem is to replace the rear differential with a new one. You could also have the existing differential rebuilt in order to stop the problem. Another option would be to replace the damaged differential with a used one from the junkyard. Although that is the cheapest option, there is a chance that a used differential will do the same thing as the original differential as this is a common problem. If you decide to get this fixed, let a certified technician, like one from YourMechanic, diagnose the noise you're hearing to get an accurate suggestion as to what needs to be fixed. Good luck.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: With car off, exterior and interior lights start flashing

It sounds like somehow the anti theft system was activated and drained the battery. Try locking all of the doors from the inside and close them. Then lock, unlock, lock and unlock the doors to see if the problem persists....

Q: Is loud screeching when pressing down the brakes normal for a Nissan?

Hi and thank you for contacting YourMechanic. A screeching sound coming from your brake can be normal. This is cause by brake dust. A paste can be applied to the brake pad to quiet this sound, but may not completely...

Q: I have V8 4.6 Eddie Bauer Explorer. When I take off, at the end of first and second gear there's a rattle noise.

The noise you may be hearing is a pre ignition ping caused by a combination of a lean fuel to air mixture and advanced ignition timing. The most common cause of this engine pinging noise. You should first have the...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...