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Loud hum starts at 30 mph - 2007 Chevrolet HHR Special Edition

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Posted on Jan 02, 2017

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SOURCE: making a loud humming noise

It sounds like a bad tire, possibly a broken belt. Check the sidewalls and tread of all the tires for bulges. If good it probably is a bad wheel bearing. Try to isolate from where and what side. If the noise gets louder turning one direction but not the other, then more likely a bearing. If it stays constant both directions but gets louder with speed, then suspect a tire.

Posted on Mar 02, 2011

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Driving noise, not from bearings


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Makes a humming sound between 30 and 40 mph


I suspect that one of your wheel bearing have worn out. SO to confirm please lift up one by one all the wheel and rotate. listen to any hum which corresponds to your noise. hold the wheel on either sides and check for any shake even a small one. if you detect a hum check the wheel bearings and the HUB, most cars have this assembly making the noise specially when the grease becomes dry or there had been water logging specially salty.If so change the bearings / hubs, when changing look out for any damage to the axle. I hope you get this right. Helpful? Good day.

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tire shape ,wheel balance.any leakage at wheels.

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Humming


Chances are it's the tires rather than the engine.
Does the hum diminish if you back off the accelerator? If yes, then look at rear axle pinion bearing. If no, then feel across the tires. They should be smooth across. If they're rough, they will make a loud howling noise.


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2004 Pontaic Bonneville humming noise wheel bearing?


I had a similar problem, when turning to the right or on a right curve, the noise would go away. After some research I found it was the left wheel bearing assembly. I replaced it and the problem is gone. Therefore, check the wheel bearing assembly. You may have to replace it.

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Loud annoying sound when driving over 35 mph


Check the fluid level and make sure. If the fluid level is not the problem, I would have someone do a complete check on the front end.

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Loud noise in back end


lift the car up and check the wheel bearings by turning the wheels manually. Listen for any clicking noises. Move the wheel back and forth pulling it toward you. There is not supposed to be any movement or noise on the wheel if the bearings are good. if you do see any movement or hear any noises , replace the wheel bearings

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