Question about 2007 Chevrolet Silverado 1500 2WD

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My 2007 Silverado Classic has a humming noise and vibration at 45-50 mph abouve 50 or below 45 it is not heard or felt. The shop told me it was the exhaust housing causing the noise. That somehow seems way off the mark to me.

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A exhaust heat sheild can make that noise

Posted on Nov 13, 2009


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I replaced my tierod on the passenger front.there is still some play in the left to right there is also a humming sound at speeds 40+mph. it's coming from the hub bearing or ball joint.

Any wear or play in a bush or rod usually gives a 'knock' or causes vibration, not a humming noise.
If there's play in the steering wheel that may be due to a worn steering rack and pinion.

A worn ball joint can cause a 'crack' noise and depending on the wear, vibration that will be felt through the steering wheel. A worn ball joint can also cause the car to pull to one side.

A humming noise suggests it is either a brake rotor/pad, or a worn driveshaft or wheel bearing.

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There are literally HUNDREDS of parts that can cause vibrations at certain speeds. There is NO WAY POSSIBLE for anyone online to tell you with any certainty where it is coming from. I have been in this business for 36+ years and I can tell you that it can be EXTREMELY DIFFICULT to nail down noises and vibrations when you have access to the vehicle and can hear and/or feel it yourself! Many times, a noise or vibration (especially a "lite" one) cannot even be felt or heard by the person testing the vehicle unless you specifically point it out to him. When I take into consideration that you said it only happens at 70-72 MPH, I wonder why it is that it even bothers you. It seems to me that this 2 MPH "window" would be very easy to avoid.
I think you will get a much better answer to your question by taking it to your mechanic and have him ride in the car with you so you can demonstrate the problem for him.

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I purchased a 2007 GMC seirra with the 5.3L active fuel management engine.recenlty it has developed a hum/vibration when the engine is in V4 mode and seems to fade away when the engine goes to V8 mode..My...

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My 07 silverado had a vibration noise at around 30 mph.i took it to the dealership,they said they found a bulletin.they cut out a piece of the exhaust pipe and replaced it with flex pipe.the noise went...

Yes they did, it's a harmonic vibration through the exhaust pipes that you were feeling and hearing, all trucks do it, just some people complain about it. If the noise has came back they are going to try and hang weights off of the exhaust to fix the problem, and that will work. I've never ran into one with that low of a rpm/speed complaint but it could happen. Or something has come loose?

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1 Answer

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The drive shaft needs to be replaced.its slightly bent or damaged.Check end float on both drive shafts for excesive movement.Also check for lift in the driveshaft gearbox bearings.Hope that is helpfull.good luck.

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Had my y-pipe replaced (bad cats) and the bolts at the y-pipe flange where it attaches to the exhaust manifolds started to get loose and I go tthe viberating (tinning) noise. Took it in the first time and they tightened everything up but it seems it's doing it again so I'm going to try to fix on my own. Just wondering how much of a pain it's going to be to get to the bolts and what size...

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1 Answer

1999 chevrolet silverado 1500 4.3L long box

it is almost impossible to solve without hearing it in person, but some things to check are the front brakes, front wheel bearings, tires, and loose suspension parts.

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That sounds like a left front wheel bearing gone bad My friend.. turning right transfers weight to the left side and it probably has a roar similar to a turbo fan jet.. Try it and lemmie know.. thank you

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