Grinding noise when going over bumps

Hi,

If it is going up a hill, that would sound like a wheel bearing or bearing in the differential. I'm questioning it over bumps. Does the sound change when brakes are applied or if you are making turns? Also, is there any difference if the brakes are applied? Also, it could even be related to a universal joint. Take a quick look through this link. It explains how to check a universal joint.

https://www.2carpros.com/articles/how-u-joints-work

One other thought. Check the differential fluid. Make sure it is clean and full. Here is a link that shows how that is done:

https://www.2carpros.com/articles/differential-gear-oil-fluid-check

Let me know.

Joe

It changes sound or it stops when i turn.

Don't laugh, but does it stop when turning one direction and get louder in the opposite directions?

No the sound doesn't get louder. It just changes or stops no matter what way i turn.

If it sounds like a grinding sound, I'm questioning if it is a carrier bearing in the differential. Do me a favor. Check the fluid in the differential and see if it is full. Do that and let me know if when you check it if it is brown in color or more of a golden color.

I will watch for your reply. Also, the link I attached above shows a GM vehicle, so the fill / check should be the same. All you will need is a 3/8" ratchet and extension to fit the plug.

Let me know.
Joe

I'll let you know in the morning. It's currently storming out.

Ugh!!! The weather hasn't been good. I will watch for your reply.

Take care and stay dry.

Joe

It came out a brownish black.

I just replaced it today.

When you replaced it, were there any shavings on the magnet in the differential or evidence of any metal shavings in the gear oil? Has there been any change? Was it low on fluid? Also, is this an extended cab or crew cab that may have a carrier bearing in the center of the drive shaft?

Let me know.

Joe

It's a extended cab and there wasn't any metal and it hasn't done it since.

Great!!! I'm glad to hear that took care of the issue. Please feel free to come back if you have questions in the future.

Take care and stay healthy.

Joe

If it does come back what could it be?

It came back .

But i do notice that it stops when i jerk it to the right.

If you are sure it is the rear of the vehicle, that sounds like the right rear axle bearing is bad. What happens is when you turn hard to the right, the vehicle's weight distributes more to the left releasing pressure from the right side. Thus, less weight on the bearing equates to a change in sound.

You indicated this is an extended cab. Can you check to see if there is a carrier bearing mid way on the drive shaft that supports the shaft with a bearing mounted to the undercarriage? If there is, place the vehicle parking brake and make sure it can't move. Place it in neutral and then see if there is play in the bearing assembly.

Let me know.

Joe

It happens when i go straight but it stops when i swerve it to the right.

There is a bit of play in the driveshaft.

I just realized my parking brake does not work too. I've checked it before and i was checking it again and i forgot my parking brake doesn't work.

Also there is no carrier bearing .

The idea there is an issue with the parking brake makes me question if there is an issue behind the rear brake rotor (parking brake assembly). Have you had things apart? It's possible a retainer or spring may have come loose or off.

Let me know if you have already checked.

Joe

I have not checked, but when i turn the parking brake on the light does come on.

I have to be honest. It may be a good idea to check. I would safely lift and support the rear wheel. Spin the wheels and see if anything sounds odd. I would then pull the wheels and check the brakes.

Let me know.

Joe

Okay.

Nothing sounds funny i did a tire rotation myself and checked the rear wheels and it didn't make any funny noise. Do you think it could be the CV boot or could it be something else?

Is it loud enough to record on your phone? If possible record it and upload it for me to hear. The idea that it stops when you turn hard right, it sounds like a bearing on the right side of the vehicle, likely the right axle bearing. You are certain it isn't something crazy like a bent backing plate behind the brake rotor rubbing, correct?

Let me know.
Joe

Turns out it was the e brake. Removed it and it stopped.

Hi,

Thanks for letting me know. I was wondering how this turned out for you. I'm glad to hear it is repaired. Feel free to come back anytime in the future if you have questions.

Take care,
Joe

Will do.