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brake squeals on z51

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Old Jun 20, 2005 | 06:21 PM
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Default brake squeals on z51

Well I went to the dealership and they told me it was normal and gave me the gm bulletin on it. Has anyone found a loop hole or do you guys just fix it yourself? And is it the brake pads causing this? I assumed it was pads but the dealership kept talking about the crossed drilled rotors being a factor but there are alot of people w/ crossed drilled rotors without squeal.
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Old Jun 20, 2005 | 06:30 PM
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You either need to get on 'em hard a lot, or go to a ceramic pad. You may give up some stopping power though.
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Old Jun 20, 2005 | 06:43 PM
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Common problem. Spend about $110 (do it yourself) for the ceramic pads. No squeal. Very little dust. And the braking seems the same to me. (daily driver). James
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Old Jun 20, 2005 | 06:47 PM
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Its not the rotors that are making you squeak. Its the compound that makes up the pads. Its just what high performance brakes do. They are meant to be hit hard and often. If you hard brake from time to time, then the squeal will go away. Just FYI the Porsche Carrera with the ceramic brake rotors and high performance compound pad ($88,000 car with an $8,000 brake option) squeal. The Ferrari Superamerica ($200,000 car) squeals, the BMW M3 competiton car ($65,000 car), its just what high performance brakes do.


Oh I almost forgot. 2,300 miles on my Z51 C6 and no squeal.

Last edited by DrivnXcitment; Jun 20, 2005 at 06:49 PM.
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Old Jun 20, 2005 | 07:58 PM
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Default Bulletin on squealing brakes and Z51

Originally Posted by TXblkc6
Well I went to the dealership and they told me it was normal and gave me the gm bulletin on it. Has anyone found a loop hole or do you guys just fix it yourself? And is it the brake pads causing this? I assumed it was pads but the dealership kept talking about the crossed drilled rotors being a factor but there are alot of people w/ crossed drilled rotors without squeal.
Can you post the bulletin TX black C6? My mechanic is researching it now. I have squealing breaks and Z51.
Thanks!
Jay
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Old Jun 20, 2005 | 08:07 PM
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The brakes an the Viper squeal also.

No squeal on my Z-51
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Old Jun 20, 2005 | 10:47 PM
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My Z51's brake squeal went away at about 4k.
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Old Jun 21, 2005 | 02:00 AM
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As other's have said - the z51 brakes are performance oriented. Albeit the "cracking" at the drill holes under high heat

I find that feathering them at low speeds causes the squeal. If you brake at 3/4 pedal during most stop's the squeal goes away in feathering situations around the neighborhood.

If you are in a feathering situation during daily driving - just go with ceremic pad's. If you track, but the perf pad's on during tracking.

JK
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Old Jun 21, 2005 | 05:50 PM
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ACEVentura, I tried finding itself on the web but failed but the print up came from service.gm.com under the service information and the document id is 1581051. I hope this helps.
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Old Jun 21, 2005 | 06:54 PM
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My Z51 pads don't squeal, but I still can't wait to get rid of them. Way too much dust for me. I've run the GM ceramics before and love them, so they're next for the C6.
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Old Jun 21, 2005 | 07:16 PM
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3200 miles on my Z51 and no squeal.

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Old Jun 21, 2005 | 11:25 PM
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Mine squeals like Burt Reynolds in Deliverance...

That and the dust, I'm about fed up (and I do brake agressively)...

Anyone got the PART NUMBERS for the Z-51 Ceramic Pads (Front/Back)? I'll get my shop to order them, and throw 'em on the pile for "the next time I'm on the lift"...

Rick
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Old Jun 21, 2005 | 11:25 PM
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Originally Posted by Lesandvita
3200 miles on my Z51 and no squeal.

5050 miles and NO squeal
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