Q: How do you detect the grinding noise in the rear diferential, rear wheel drive?

asked by on

During the auto inspection, the mechanic stated, "he heard a grinding noise rear differential" How can this noise be detected, can it be heard by listening with the car engine on, the vehicle is stationary or when it is being driven? My car is 1998 Chevy Camero 3.8 liter V6, rear wheel drive 142,000 miles. There are no leaks, levels of transmission fluid are at proper level. I have had the transmission flushed before, should it be done again, is it useful??

My car has 142000 miles.
My car has an automatic transmission.

Hi there. Raise up the vehicle off the ground and put it on jack stands where all the wheels are off the ground. Check the rear differential fluid in the rear axle on the car. See if there is fluid in the differential. If there is no fluid, then fill up the differential with the gear oil that the vehicle came with from factory and recheck for any noise. If the fluid is full, start up the vehicle and step on the service brakes to the floor. Put the transmission in low and let off the brake. If the differential was damaged it will make a noise like grinding or a banging noise. If there is no noise, then shut off the engine and put the transmission in park when the wheels stop turning. Lower the vehicle and take the vehicle for a test drive. With all of the windows down, if there is a grinding noise, then the differential or transmission may be damaged to where only a load will cause the sound. This would be a bearing in the differential or transmission failing. If you need further assistance locating the grinding noise under your vehicle, then seek out a professional, such as one from Your Mechanic, to help you.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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!
  1. Home
  2. Questions
  3. How do you detect the grinding noise in the rear diferential, rear wheel drive?

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Speedometer and odometer and trip mileage stopped working

The back of most dashboards is an electrical relay, which supplies power to individual components inside the dash. If all of these systems are not functioning, it's possible that this electrical relay is damaged; or perhaps an electrical wire /...

Q: Wheel bearing grinding

The grinding noise is most likely your brake pads grinding the rotor surface. Look through the wheel at your brake assembly and take note of the brake pad thickness. If it is down to the metal it will grind the...

Q: Tire size change

There are some differences in the two tire sizes and I will go through some of them for you. See the table below for differences in dimensions: ...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.