Question about 2000 GMC Jimmy

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I have a humming sound from the right front and it's not the tire , it gets louder as i increase speed . took apart right front axle and am replacing will this fix it ?

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Probably not. It is probably your wheel bearing. If it gets louder the faster you go its the wheel bearing

Posted on Aug 28, 2010

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Jan 12, 2016 | Cars & Trucks

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Front end humming


noise is a bad sign, best is to have mechanic find it
some noises can be very very dangerous to driver for sure
the testing person,
makes noise only moving, in all gears
does it make noise moving in Neutral, coasting,
does doing that, and carefully stalling engine coasting with noise stop the noise.... yes, find a safe place to do that.
i use a steelman electronic stethoscope to find most noises.
it has a clamp on microphone, its like a $35 tools, way less that taking the whole car apart.
it will find which corner or better.
sounds to me like a bad wheel bearing.
or bent backing plate
or caliper guide pins jammed, ,rusted, or bean rotor. or? or ?
if the 4wd is disengaged, the front gears dont turn, so.....
in fact that is it prime purpose... if the the air pump is off and the lever retrated, its off. id check that tool... is front axle decoupled.....
the FSM covers this test in 1 page.
as does alldata.com ,....

Jan 22, 2014 | Jeep Cars & Trucks

1 Answer

Rythmic humming


cv axles going bad?wheel bearing? but you said clicking so i would say cv axles, if its manual check trans fluid, humming can also be the alternator increasing sound with speed overinflated tires etc be a little more descriptive click click? tock tock? clack clack?left side? right side? only when turning? is the licking and the hummming together or seperate

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1 Answer

Changing front axle assembly or wheel hub or both? Either way, need torque specs for all bolts.


you've got a bad axle shaft in the front and possibly a bad bearing in the hub. 4/wheel drive makes the front axle actually work. Theys no real pressure on these shafts when in 2/wheel drive.

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HUMMING NOISE FROM FRONT END WHILE IN MOTION , SOUND GETS LOUDER WITH INCREASED SPEED , NO CHANGE IN SOUND WHILE TURNING. BRAKES ARE OK. WITH WHEELS OFF & ROTATING AXLES BY HAND NOISE SEEMS TO BE...


Thats bad, if it really is the trans. When wheels are up in the air, put the car in gear, and grab the coil spring. If a wheel bearing is bad, you will feel the vibrations through the spring. If you compare right and left, you will be able to tell which wheel bearing is bad.

Dec 16, 2009 | 1999 Pontiac Grand Am GT

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Truck makes humming sound, volume increases with speed and turn


Wheel bearings is my guess. Confirm this by jacking the vehicle up with wheels on and check for play. Grab the tire by the top and bottom and wiggle it in and out, the will be excessive play. Given the fact that you gave a clear explination i am almost certain its bearings. You will need to purchace new bearings(Inner and Outer), Hub Seals, and possibly a possibly an axle seal kit for the 4x4 drive axle (they get old and stick to the axle durring disassembly) and keep in mind that to get the outter races of both bearings in the hub need to be "Pressed" out a a machine shop, or by any shop that might have a press.

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Dull humming sound from front end of car sound increases and decreases with speed of car.


that would most likely be tires and/or wheel bearing, common thing on these cars, also a way to check if its wheel bearings is to listen when you turn, does it get louder when you turn left or right, if it does it sounds like wheel bearings, run your hand on the tread of the front tires, are they smooth or does it feel jagged? if it feels jagged then you need an alignment. i'd have a shop check the wheel bearings and alignment.

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1 Answer

Alero loud humming/roaring sound coming from front end.


That's indicative of a wheel bearing, which is why you were told to change that out. However, it's also possible that the carrier bearings in the differential (where the drive axles attach) have gone bad. That happened to me on my 300ZX several years ago, and I had to replace the diff bearings. I would have them checked out somewhere other than a dealer (you'll probably get a better price from an independent shop).

As a sidenote, to be sure it wasn't a wheel bearing, if you hear it quiet down in a turn one way but get louder in a turn the opposite way, it's likely the wheel bearing. If you turn left at speed and it gets louder, then it's the right bearing (since you're loading up that side of the car). If it gets quieter in a right turn, it's the right side (you're unloading that side of the car and not putting as much weight on it, so it doesn't drag as badly). See if you get that symptom just to be sure that the wrong side front wheel bearing wasn't changed.

Sep 01, 2008 | 2001 Oldsmobile Alero

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