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Old May 14, 2006 | 05:54 PM
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Default Need some help Please!

I'm taking my Z51 coupe for its first trip to the dealer tomorrow. Among the things I want fixed are the squeeling brakes. I've called to find out what they would do. The answer I got was "GM recognizes the brake squeel is a problem but until they have a fix they are temporarily doing nothing under warranty".

While I'm not happy about this response, I'll live with it. The dealer did say they would replace the pads at N/C if I bought them. They also said they recommend turning the rotors. This is the issue. For a car that just turned 16K miles, if the have them install the Gene Beans (ceramic I think) replacement pads that I bought, do I need to turn the rotors?


Your feedback is appreciated. Thanks.
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Old May 14, 2006 | 06:00 PM
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There was a GM Service Bulletin regarding brake squeal that was active couple of months back. Do a search for "brake squeal". The bulletin provided for the dealer to replace pads at no cost.....a number of Forum members had that service done. If the bulletin is no longer active & the dealer is willing to swap out pads you've bought, for no cost, that's not a bad deal.....and unless the rotors show signs of scoring, there's no need to have them cut. That's just the dealer's scam to get some $$$ off you.

Last edited by Dave S; May 14, 2006 at 06:01 PM. Reason: spelling error
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Old May 14, 2006 | 06:01 PM
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the dealer is correct . GM came with service bulletin and yanked it in March. The ceramic pad will fix the squealing and dust. As far as turning the rotor they need to do it for the new pad to seat well from the onset.
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Old May 14, 2006 | 06:03 PM
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Check out the Technical Bulletin re: 2006 Brakes at this website:
http://www.corvetteactioncenter.com/....php?qstId=568
and you''ll see that they are using a different brake pad on the 2006
Z51s. You don't need to go to a different brand of pad, just get yours updated. I have a 2006 Z51 and I have no brake squeal.
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Old May 14, 2006 | 06:06 PM
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Thanks to the both of you. The only problem is one says resurface rotors, the other says no.

I understand getting the pads to seat is important. Can't the pads just as easily conform to any wear on the rotor?

Keep in mind, we are talking about a car with only 16K miles.
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Old May 14, 2006 | 06:08 PM
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Originally Posted by Nifty C6
Check out the Technical Bulletin re: 2006 Brakes at this website:
http://www.corvetteactioncenter.com/....php?qstId=568
and you''ll see that they are using a different brake pad on the 2006
Z51s. You don't need to go to a different brand of pad, just get yours updated. I have a 2006 Z51 and I have no brake squeal.
Thanks Nifty C6. I believe the pads Gene Beans has been selling on the Forum are the updated pads you are speaking of. What about re-surfacing the rotors?
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Old May 14, 2006 | 06:15 PM
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can you resurface slotted rotors?
Originally Posted by hiznhrz
I'm taking my Z51 coupe for its first trip to the dealer tomorrow. Among the things I want fixed are the squeeling brakes. I've called to find out what they would do. The answer I got was "GM recognizes the brake squeel is a problem but until they have a fix they are temporarily doing nothing under warranty".

While I'm not happy about this response, I'll live with it. The dealer did say they would replace the pads at N/C if I bought them. They also said they recommend turning the rotors. This is the issue. For a car that just turned 16K miles, if the have them install the Gene Beans (ceramic I think) replacement pads that I bought, do I need to turn the rotors?


Your feedback is appreciated. Thanks.
Reply
Old May 14, 2006 | 06:18 PM
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GM does not rec. machining rotors for routine brake pads replacement or brake noise unless there is signs of scoring or excessive runout.
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Old May 14, 2006 | 06:19 PM
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Originally Posted by cfl70
can you resurface slotted rotors?
Good question. I assume so. I told the dealer it was a Z51 and they are the ones suggesting a re-surface.
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Old May 14, 2006 | 06:21 PM
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Originally Posted by 99FewteRC5
GM does not rec. machining rotors for routine brake pads replacement or brake noise unless there is signs of scoring or excessive runout.
Thanks 99FewteRCS. Is this on a TSB or something I can point the dealer to?

Love the Vette; hate taking it to the dealer!
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Old May 14, 2006 | 06:26 PM
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Originally Posted by hiznhrz
Thanks to the both of you. The only problem is one says resurface rotors, the other says no.

I understand getting the pads to seat is important. Can't the pads just as easily conform to any wear on the rotor?

Keep in mind, we are talking about a car with only 16K miles.
"and unless the rotors show signs of scoring, there's no need to have them cut. That's just the dealer's scam to get some $$$ off you."

What the dealer doesn't tell you is that this process will also cause your rotors to warp much easier. Rotors are not like what they used to be, turn them now and they will warp the first time you have to make a hard stop.
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Old May 14, 2006 | 06:29 PM
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Service manual page 5-112 state the process about refinishing cross drilled rotors
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Old May 14, 2006 | 06:30 PM
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Originally Posted by 30YR W8T
What the dealer doesn't tell you is that this process will also cause your rotors to warp much easier. Rotors are not like what they used to be, turn them now and they will warp the first time you have to make a hard stop.
Thanks 30YR W8T. My gut tells me not to turn the rotors but would rather rely on the experience of others.
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Old May 14, 2006 | 06:31 PM
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Originally Posted by SMJBA
Service manual page 5-112 state the process about refinishing cross drilled rotors
SMJBA - thanks. Does the service manual say to refinish rotors anytime pads are changed?
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Old May 15, 2006 | 01:11 PM
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A cheap & easy technique that often works:

Accelerate to about 80 mph on clear-dry road.
Get on the brakes HARD, but not enough to engage the ABS;
When slowed to about 10 mph, release brakes and acclerate to 80 again.
Repeat twice, then drive moderately for at least 10 minutes before any complete stops.

Usually works for several thousand miles before needing repeat.
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Old May 15, 2006 | 01:24 PM
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Originally Posted by 99FewteRC5
GM does not rec. machining rotors for routine brake pads replacement or brake noise unless there is signs of scoring or excessive runout.

When the GM TSB was active it said not to turn the rotors.
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Old May 15, 2006 | 06:22 PM
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SMJBA - thanks. Does the service manual say to refinish rotors anytime pads are changed
Does not state when it must be refinish but it state when not to...

Not enough thickness
Excessive rust
Cracks
Blueing
Scoring in XS of max allowable

In addition refinishing should not be use to try to correct

Brake system noise
Premature pad wear
Cosmetic corrosion
Scoring less then specification
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Old May 16, 2006 | 07:23 AM
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Originally Posted by 30YR W8T
"and unless the rotors show signs of scoring, there's no need to have them cut. That's just the dealer's scam to get some $$$ off you."

What the dealer doesn't tell you is that this process will also cause your rotors to warp much easier. Rotors are not like what they used to be, turn them now and they will warp the first time you have to make a hard stop.



Then it's a 4 wheel rotor replacement - about $750 ? (Help here guys)

New pads willn seat well unless there is scoreing on the rotors.
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