Question about 1996 Chevrolet Blazer

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Blazer humming noise

As soon as I start moving at about 15mph or so you hear the noise. It is really loud at about 45-55mph. Even when you do about 35mph and then let off the gas to coast down you'll hear it loud and clear.

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  • 108 Answers

Tire may be out of round or have a defect...local dealer can check for you!

Posted on Nov 02, 2014

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 114 Answers

SOURCE: loud hum from front end-99 blazer 4x4

Sounds like the front hub bearing assembly.

Posted on Jan 22, 2009

  • 45 Answers

SOURCE: Chevy Trailblazer Engine very loud when starting

it's too early to tell. i,ve never known a light to come on because of a thermostat.you need to see what code was stored. without knowing,im just guessing. but my first thought was a plugged up catalytic converter. that explains the low power,also fuel filter.

Posted on Apr 29, 2009

Murphybanton
  • 2004 Answers

SOURCE: Loud humming noise

The power steering pump humms when it has gone bad.

You need to replace or service it incase there is a blockage due to dirt in the transmission oil compartment.

Costs not so much.

Rate this please.

Posted on May 23, 2009

udesh99
  • 97 Answers

SOURCE: There is a humming noise when driving HHR. It

I Think it must be Sylancer Mounting Bracket or Mount Problem

Posted on Oct 06, 2009

  • 10 Answers

SOURCE: My trail blazer has something in the front end

Had the same problem in my 2004 Trailblazer. Finally figured out it was the air pump on the driver side right under the driver side floorboard. Took it off and it was full off water because of a design flow by Chevrolet. I took the pump off and emptied the water out and dried it out real good and the noise stopped. I re routed the intake for the pump away from the front of the truck and haven't heard the noise since.

Posted on Jan 15, 2010

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My 1998 chev blazer has a loud knocking noise, won't pick up speed n shuts right back off as soon as I go to drive, what could b the issue??? TIA


It came be a broking fly wheel do you hear any noise under truck then just may be a piston connect rod but not be care able to hear it all or this just a guess .

Feb 20, 2015 | 1998 Chevrolet Blazer

1 Answer

Chevy Blazer Humming Noise


are you sure its not a wheel bearing? does the noise change if you take a corner to the left or right?

Apr 30, 2013 | 1999 Chevrolet Blazer

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Loud humming noise from right front end of 99 blazer


the noise is coming from the wheel section, it's called air splash, humming varies with speed, main causes are wheel alignment due to loose ball joint, check if your tire erodes on one side, next check your disc brake for clogged air cooled vain and disc wearing

Feb 23, 2012 | 1999 Chevrolet Blazer

1 Answer

When driving our 2001 montana, the noise gets really loud. Like a loud humming. What could be causing this noise? We had one wheel bearing replaced on the front left wheel which was a little loose, but...


"Loud humming" could describe many of the noises that your minivan may make. Let's start with the basics: do you hear the noise only when the van is in motion or also when the van is stopped? If you can hear the noise even when the van isn't moving, you're most likely looking at something in the engine compartment. Your serpentine belt and the alternator bearings (and, to a lesser likelihood, your power steering pump) are all sources of noise "in there." An A/C compressor on its last legs may also vibrate and cause a humming sound, though that's usually described as more of a "growl."

If you can only hear the noise when the car is in motion, the next question is whether it changes pitch/volume due to engine speed or due to road speed? For example, does the noise get quieter (momentarily, perhaps) when the transmission shifts gears? Or, does the noise simply get louder/change characteristics in a linear way as the van gets faster and/or slower?

Depending on the mileage on your van, the transmissions have been known to get quite noisy after a while, especially if you are doing sustained high-speed driving. The solution for that particular problem isn't cheap, as it involves replacing or rebuilding the transmission (the shift bands may be fine; the noise is caused by bearing wear, seal failure, and other sundry issues that still require pulling the transmission). A less expensive problem is that you might have a problem with one of your tires--a tire with separating belts may make a noise like this as it slowly tears itself apart. If you hit something hard with the undercarriage of the van, you might have a drive shaft that's slightly bent and hence is causing some sympathetic vibrations in the car because it's out of balance.

Depending on the cause, your humming sound may be one of those things that comes with driving an older car--or it may be a sign of the imminent failure of something serious. It's worth getting things checked out again to try to find the cause of the problem. You'll feel a lot better knowing what it is, even if it's something you choose not to fix.

Sep 11, 2011 | 2001 Pontiac Montana

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

2 Answers

Loud squeaking and rattling when you accelerate after a stop


Is the underside rusty? If so, take it to a qualified welding and autobody repair shop to have new metal welded on.

Your symptoms sound like the engine or transmission mounts may have deteriorated.

Jul 04, 2010 | 2003 Chevrolet Blazer

1 Answer

Rear end humming noise


check the play in the pinion gear bearing on the rear end i think! you will find the yoke ie lose and also the bearing has excessive play and needs ro be changed

Jan 22, 2010 | 2000 Chevrolet Blazer

2 Answers

My 1996 Chevrolet Blazer won't start most of the time. Engine don't turn over, or the starter when I turn the key. All I can hear is some clicking coming from the carbarator & a humming noise under my...


The humming noise you hear is the fuel pump. It is probably your starter soleniod. If you hear an electric click under the dash near the steering column when you turn the key then the ignition switch is ok and your starter needs to be replaced. This happened to me last month.

Dec 08, 2009 | 1996 Chevrolet Blazer

1 Answer

Loud hum from front end-99 blazer 4x4


Sounds like the front hub bearing assembly.

Jan 22, 2009 | 1999 Chevrolet Blazer

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