Humming Noise From the Rear of Your Truck? Replace the Axle Bearing Before It Starts Grinding

If you hear a humming noise from the rear of your truck, it's probably one of two things. Either the differential has a problem, or the axle shaft bearings are worn out. In this video, Len shows you where to look in the rear of your truck to find out where that humming noise is coming from, and shows you what you can do to fix it.

0:00 Humming Noise From the Rear of Your Truck? Replace the Axle Bearing Before It Starts Grinding
0:30 Listen For the Humming or Clunking Noise With a Passenger
1:20 Check Drive Shaft and Differential
4:13 Replacing the Rear Axle Bearings

🔧 List of tools used:
• Gasket Adhesive
• Gear Oil
• Wheel Chocks

⚠ DISCLAIMER:
While 1A Auto strives to make the information provided in this video as accurate as possible, it makes no claims, promises, or guarantees about the accuracy, completeness or applicability of the content. No information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. All do-it-yourself projects entail some risk. It is the sole responsibility of the viewer to assume this risk. 1A Auto is not responsible or liable for any loss damage (including, but not limited to, actual, consequential, or punitive), liability, claim, or any other injury or cause related to or resulting from any information posted in this video.

[AAuto]

√ Watch the Video
√ Do it Yourself
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[zachsmith]

I feel 1A Auto has the best repair channel. I have also ordered parts from them several times and not disappointed.

[sebastronomical]

Len my man, I’ve learned so much from you and 1A Auto. You make working on vehicles a breeze!

[wildergutierrez]

GOOD JOB AND GOD BLESS YOU KEEP IT GOING, I LIKE YOUR VIDEOS WE LEARNING A LOT

[brummiesteve]

Hi, this came at just the right time. Doing my Frontera tomoz, this has been a great help.

[ChezJohn]

What a fantastic tutorial, I learned SO much watching this. Thanks so much.

[tarareinhardt]

Very well explained!! No experience and i would feel confidant doing it myself while using this for instructions!

[DerrickOil]

Why not both bearings? You are already inside the differential.

[gayleleier]

I am on your subscribed list and my son just sent me info about the rear of his truck making noise. He is deaf but with his hearing aids he can hear some and pretty well decern where it is coming from. I sent him this video and told him to check and see if this might be his problem. Because it is not happening all the time. It is on and off and the mechanic can not find it. I hope if he leaves you a comment that maybe you can advise him a little better. Thanks for all your great advice. I have used your advice quite a few times now.

[petermasci]

This tahoe is a real trooper. Been in so many demos! Lol one day it'll be made entirely of 1a parts

[vr]

Could you do one where you convert an open differential to a limited or locking differential?

[wendywhales]

Excellent video..
You explain very well.
Thanks for your time

[xisotopex]

how would you be able to know the difference between this or a differential going bad?

[newfie-dean]

I replaced the rear shocks on a 2006 Mustang GT with Bilstein ones. This car always had some slight humming noise in the rear end at highway speeds. With the new shocks it is completely quiet in the rear now and I don’t understand why as this car was basically like that since it was pretty new. Any idea what new shocks might have changed?

[mikelinux]

didn't realize you guys have so many specialized tools. Are mechanics expected to own them or are they provided by the shop.

[DJbickythemaster]

can you guys do a how to video for a rack and pinion on a 02 to 07 jeep liberty. i need to change one on mine.

[englishbulldogretreat]

How about humming in the front left, right, or the differential?

[johnsn]

What is the torque spec for the 8mm bolt inside the diff?

[djodjodubois]

Good morning..I would need help..my 2005 Ram 4.7 with the big differential..was fine and one good morning..a second the truck is turning a little my rear wheels suddenly lock..as if my Rachette worked badly and caused his backlash on my wheels

[jrk]

What does it sound like??.. can we get sound on camera?( even though it’s old)