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squealing noise when turning, brakes?

Squealing noise when turning left.

squealing noise when turning, brakes?

Postby JonPreston35 [OP] » Apr 17 2019, 7:24pm

Hello all,

I am having an issue with my truck and am really at my wits end with finding the problem, thats why I joined this forum in hopes of some advice.

I have a 2005 GMC Sierra, 4X4, that has developed a squeal only when turning left. My first initial thought was a wheel bearing. Just some info on the wheel bearing history, I just changed the passenger side back in October after it went out. Since then this squeal has newly developed, so I changed the driver side wheel bearing thinking it was the culprit, still it will squeal when making a left turn.

I have no dust covers(In the process of beating the old wheel bearings out I gently mashed them with my sledge hammer) so I know the front dust covers aren't whats causing the sound. The brake rotors are brand new, the brake pads are in good shape with 60% left. The cv joints and axles are all tight, no play at all. The power steering fluid is topped off, this squeal doesnt sound PS related anyway, sounds like metal on metal. My first thought after changing wheel bearings was that it was the wear indicator on my brake pads, but the pads are still good. Someone had mentioned the backing plates on the rear axle, that when turning left it puts the right rear in a bind with the backing plate, could this be possible?

I'm really at a loss of where to look and hate to take it somewhere only to find out that its a simple fix. It's not a squeak as in a bushing thats dried up, but its more of a metal on metal, sounds just like a wheel bearing, but with two new front wheel bearings I know this isn't the case. Also someone mentioned the emergency brake arm could be loose or hanging up on the inside of the drum.

Any ideas??? Really want to get this fixed because its driving me nuts.

Thank you all for your help in advance,

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Re: squealing noise when turning, brakes?

Postby GBSierraSLE » Apr 20 2019, 11:08pm

Do you have rear disc brakes? Could it be the splash shield behind the rotors? They are known to rust pretty badly. They were completely rotted away on my '00 Silverado. Maybe a part of one is rubbing on the inside of your rear wheel just enough to make the noise when turning?
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Re: squealing noise when turning, brakes?

Postby Zrock » Apr 21 2019, 4:32pm

Have you jacked the truck up and checked to make sure the bearings are good or are you just relying on the they are new feature? Did you change the brake pads or just swap them over to the new rotors could be contamination from the old rotors in the pads causing the sequel? Should always change pads and rotors together pads are cheap. Did you lube/clean all slides on the brakes during reassembly may have a brake that is not fully returning. Go back over your work if it just developed since you did bearings

The only clue i had when my wheel bearing went bad was a squealing when i turned no other signs of vibration, grinding, or pulling. When i jacked it up it was ready to fall off
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Re: squealing noise when turning, brakes?

Postby JonPreston35 [OP] » Apr 25 2019, 3:25pm

Good morning all,

I have jacked up the front end of my truck and manually checked that its not the bearings themselves, I'm leaning more towards brakes being the culprit as I am having lots of brake dust build up.

The rear brakes are drums, I haven't pulled the drums off yet mainly because the noise sounds to be coming from the front, but Im curious if something isn't rubbing inside the drum, I'll dig into it this afternoon.

Lastly, the guy at the local parts house tells me he thinks its a front cv axle bearing, but I thought those made a clicking, clunky noise when they go bad, not a squeal?

I'm still on the hunt for the noise, I appreciate all your guys help.

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Re: squealing noise when turning, brakes?

Postby nealinator » Apr 25 2019, 3:34pm

A cv certainly does not make sense. Parts guy does not know what he is talking about if you ask me. Strange that brakes would make a squeal when turning. Perhaps something is rubbing and is really close and somehow just barely makes contact when turning.
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Re: squealing noise when turning, brakes?

Postby JonPreston35 [OP] » Apr 25 2019, 3:51pm

Thats what I was needing confirmation on, the cv axle, I couldn't see it being the problem, not with the noise I'm hearing. I'm hearing a metal on metal, scraping sound, and it only does it at low speeds turning left. It has to be something rubbing somewhere, if I drive in a left circle it will squeal, then when I turn back straight it goes away. I know this all sounds like a wheel bearing, but I'm more than positive that it isn't.

So far it hasn't shown itself, I'm contemplating driving in a circle while getting someone to listen to see if they can pinpoint where its coming from.

I'm curious if it could be the metal brackets that the brake pads sit in inside the caliper, if they aren't shifting just enough during a turn to make a metal on metal squeal. Maybe soon I'll pinpoint the cause.

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Re: squealing noise when turning, brakes?

Postby GOAT721 » Apr 25 2019, 4:15pm

why are you positive its not a wheel bearing? there are always a few bad parts that come off the production line, even if new, it could be bad. I know this is unlikely, but it is possible
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Re: squealing noise when turning, brakes?

Postby puppeteer » Apr 25 2019, 4:19pm

Usually a squeal when turning is power steering pump. If there belt of warn will squeal under Load.
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Re: squealing noise when turning, brakes?

Postby JonPreston35 [OP] » Apr 25 2019, 4:33pm

I'll back up and embarrass myself a little here, but...... I changed a bad passenger side wheel bearing in October, it was bad, gone beyond bad, so I changed it. This noise has since then started, that's what led me to change the driver side wheel bearing, the sound was so unmistakeable that I knew that it had to be a bad wheel bearing. After changing the driver side wheel bearing, the sound was still there, squealing, metal on metal. So I took the passenger side wheel bearing off, took it back to the parts house and warrantied it for a new one, took the new bearing home and installed it, still squealing like stuck pig. So I know, of the the last two wheel bearings that have been installed, the squealing metal on metal sound was present before and after the installation of each. The driver side and passenger side wheel bearings where changed about 3 days apart.

The power steering pump issue I could see if it were just a squeal or whine noise, but this noise is completely metallic, sounds like somebody is sharpening a knife under there when I turn left. There has to be something making contact just enough when I turn left to make this noise.

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Re: squealing noise when turning, brakes?

Postby CT2500HD » Apr 25 2019, 4:39pm

The pads sit a hair-width away from the brake rotor face and even a slight roll/pitch change as you turn can move them just slightly against the rotor is there's any brake dust buildup between the pad backing and the caliper piston. This can get worse when wet, as the brake dust/dirt conglomeration absorbs water and expands in mass. It does not take much.

Get the pads out, clean them and the caliper piston faces, and use a SMALL AMOUNT of CRC "Disc Brake Quiet" instead of the Teflon shims, if you have any.
A dead/dying wheel bearing is a very different experience (as OP describes).
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