Question about 2003 Chevrolet TrailBlazer

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I have a loud humming / whinning noise coming from the rear end of the trailblazer. I have already replaced the outer wheel bearings along with the outer seals and gear oil. It's been a week since this has been replaced. It's still making the noise. Would the noise be the inner bearings that are located in the gear housing?

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  • 333 Answers

If the outer bearings can go bad, so can an inner bearing. A close visual inspection will usually reveal a bad bearing or you can feel it when you spin the bearing. You could check the gear grease in the rear end. Bearings in there can go bad.

Posted on Nov 25, 2017

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Posted on Jan 02, 2017

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SOURCE: 4.2L 2006 Trailblazer

Don' t be so quick to think that it is the bearings. If the noise gets louder with acceleration try the alternator tensioner first. Mine was doing the same thing. Whining noise at start up and louder upon acceleration. Replaced alternator tensioner and the noise is gone. Hope this helps

Posted on Dec 17, 2008

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SOURCE: how to change my front differential seal and

That will be a Huge job. The whole front diff must come out of the car and the case will need to be taken apart to even gain acess to the carrier side bearings.
The hub bearing is where the wheel bolts up is that maybe what you are talking about?
Also the axle seal isn't that bad to do you need to remove the cv shaft then it's just a simple remove the seal and install the new one.
But all of these jobs will be big ones.

Posted on Oct 13, 2009

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SOURCE: hi my name is scott,, i have a 2002 chevy express

could be your tires or maybe a u-joint

Posted on Nov 14, 2009

Kormega
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SOURCE: I have a 2005 Chevy

ok it could be two things. it could be rear wheel bearings or a rear diff. If its a high pitch wine then its worn gears in your differential. its needs serviced or replaced. If it more of a rumbling or grinding hum, coming only from one side or both) then there are bad wheel bearings.

Posted on May 03, 2011

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What would cause whinning sound from frond end of 2006 montana sv6? not bearings, just done?


Check front wheel bearings. Mine made a noise but wheels appeared to be ok. when we checked further we had to change both front wheel bearings. No noise now,

Jul 25, 2016 | Cars & Trucks

1 Answer

2000 Chevy Blazer 4x4...started making a horrible loud noise after my cruise control went out. I have recently replaced my hub and the brake pads and the CV axle. The noise comes and goes and only happens...


does it get louder above 45-60mph? and much quieter at low speeds. It could be wheel bearings, a rear differential or front differential. If its a grinding humming noise its wheel bearings, listenin to see if theyre coming from the front or rear, left or right, or both when your driving to know what wheel bearing are bad. If its a whinning noise, its probably a differential. check and listen to hear if its coming from the front or rear. Also, check for loose plastic around the wheels. Lastly check your tires for uneven or choppy wear. move your hands front to back on the top of the tire. does it feel really choppy and rough, maybe you just need new tires

May 04, 2011 | 2000 Chevrolet Blazer

1 Answer

I have a 2005 Chevy Trailblazer and it is making a loud humming noise coming from the rear end. What could that be making the noise?


ok it could be two things. it could be rear wheel bearings or a rear diff. If its a high pitch wine then its worn gears in your differential. its needs serviced or replaced. If it more of a rumbling or grinding hum, coming only from one side or both) then there are bad wheel bearings.

May 03, 2011 | 2005 Chevrolet TrailBlazer

2 Answers

Noise coming from the rear end of my 2004 honda pilot it really only occurs during cold weather and after it warms up you hear it slightly


When does the noise occur, while driving only, or driving and idle, in gear, or in neutral and park? If it occurs all the time (while driving and at a stand still in cold weather) it could be the fuel pump. If it occurs only while driving, it may be a wheel bearing. Describe the noise (humming, grinding, whirring, etc), and what is the mileage on the Pilot? Answer my questions so I can fine tune my answer. Thanks!

Mar 18, 2010 | 2008 Honda Pilot

1 Answer

Whinning/humming noise on front end


you have a wheel bearing going out. see if it gets quieter if you turn one way or the other that will tell you what side it is on

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1 Answer

2002 trailblazer making loud humming noise when driving


When you turn right - you're taking weight off the right wheel.
If the noise dissipates - the passenger side wheel bearing is most likely to blame.

Thanks

Jan 06, 2010 | 2002 Chevrolet TrailBlazer

1 Answer

Loud humming noise from drivers side front end changed hub assembly still have noise ????????????????


humming noise usually comes from wheel bearings. did you change that with a new bearing? also choppy or worn tires can cause humming noise that sounds like bad wheel bearings. rotate your tires and see if the noise changes. if so its tires. also even if it sounds like its from the right it could very well be a bad bearing in another location.

Oct 29, 2009 | 2001 Oldsmobile Alero

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