Squealing Z51 Brakes
Le Mans Master
Joined: Aug 2004
Posts: 6,412
Likes: 1,295
From: Bluffton, SC
The replacement pads are not ceramic
Document ID# 1682443
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Brake Squeal on Vehicles Equipped with Z51 Package - keywords disc front groan noise pad rear squeak #PIC3320A - (Jul 8, 2005)
Brake Squeal On Vehicles Equipped With Z51 Package
2005 Chevrolet Corvette With (RPO Z51)
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern:
Some customers may comment that when they apply the brakes, the vehicle exhibits a squeal noise. This squeal noise is heard coming from the front or rear of the vehicle. Vehicles produced with the Z51 sport package are equipped with larger rotors and harder pads.
Recommendation/Instructions:
Replace both the front and rear brake pads with the part numbers listed below. Both front and rear pads need to be replaced due to the difference in composition of the brake lining material. The existing rotors should be used and it is not necessary to machine the rotors.
Part Number
Description
89060211
Front Brake Pads
88964095
Rear Brake Pads
---------------------------------------------------------------------
Brake Squeal on Vehicles Equipped with Z51 Package - keywords disc front groan noise pad rear squeak #PIC3320A - (Jul 8, 2005)
Brake Squeal On Vehicles Equipped With Z51 Package
2005 Chevrolet Corvette With (RPO Z51)
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern:
Some customers may comment that when they apply the brakes, the vehicle exhibits a squeal noise. This squeal noise is heard coming from the front or rear of the vehicle. Vehicles produced with the Z51 sport package are equipped with larger rotors and harder pads.
Recommendation/Instructions:
Replace both the front and rear brake pads with the part numbers listed below. Both front and rear pads need to be replaced due to the difference in composition of the brake lining material. The existing rotors should be used and it is not necessary to machine the rotors.
Part Number
Description
89060211
Front Brake Pads
88964095
Rear Brake Pads
Thread Starter
Intermediate
Joined: Sep 2005
Posts: 32
Likes: 0
Originally Posted by StanNH
Document ID# 1682443
---------------------------------------------------------------------
Brake Squeal on Vehicles Equipped with Z51 Package - keywords disc front groan noise pad rear squeak #PIC3320A - (Jul 8, 2005)
Brake Squeal On Vehicles Equipped With Z51 Package
2005 Chevrolet Corvette With (RPO Z51)
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern:
Some customers may comment that when they apply the brakes, the vehicle exhibits a squeal noise. This squeal noise is heard coming from the front or rear of the vehicle. Vehicles produced with the Z51 sport package are equipped with larger rotors and harder pads.
Recommendation/Instructions:
Replace both the front and rear brake pads with the part numbers listed below. Both front and rear pads need to be replaced due to the difference in composition of the brake lining material. The existing rotors should be used and it is not necessary to machine the rotors.
Part Number
Description
89060211
Front Brake Pads
88964095
Rear Brake Pads
---------------------------------------------------------------------
Brake Squeal on Vehicles Equipped with Z51 Package - keywords disc front groan noise pad rear squeak #PIC3320A - (Jul 8, 2005)
Brake Squeal On Vehicles Equipped With Z51 Package
2005 Chevrolet Corvette With (RPO Z51)
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern:
Some customers may comment that when they apply the brakes, the vehicle exhibits a squeal noise. This squeal noise is heard coming from the front or rear of the vehicle. Vehicles produced with the Z51 sport package are equipped with larger rotors and harder pads.
Recommendation/Instructions:
Replace both the front and rear brake pads with the part numbers listed below. Both front and rear pads need to be replaced due to the difference in composition of the brake lining material. The existing rotors should be used and it is not necessary to machine the rotors.
Part Number
Description
89060211
Front Brake Pads
88964095
Rear Brake Pads
Thanks
Le Mans Master
Joined: Aug 2004
Posts: 6,412
Likes: 1,295
From: Bluffton, SC
Originally Posted by vettee
What should I do if my vehicle is a 2006? Should I already have the newer Ceramic pads?
Thanks
Thanks
Team Owner
Joined: Sep 2000
Posts: 25,025
Likes: 2,716
From: Far NW 'burbs of Chicago
St. Jude Donor '13
Several members have commented that doing a couple of hard decelerations (but not hard enough to activate ABS) from 80 mph down to 20 and then driving around for a while to let the brakes cool, will solve the problem for a few thousand miles.
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Michael S. Palmer
Race Director
Joined: Jan 2004
Posts: 18,727
Likes: 711
From: Bergen County, NJ
Originally Posted by AFVETTE
I thought the 06 already had the improved pads? How many miles on your car? Maybe they need some time to breakin?
The brakes have a little whistle, doesn't bother me.
Racer
Joined: Feb 2005
Posts: 460
Likes: 0
Originally Posted by StanNH
As far as I know, GM is not putting in ceramic pads as a fix. They are merely installing softer pads. The 2006 uses the same OEM pads as the 2005, so the same fix applies.
Melting Slicks
Joined: Oct 2001
Posts: 2,786
Likes: 49
From: Sun Devil Country
Originally Posted by vettee
Thanks Stan....
Any recommendations on after market pads? No Squeal no mess?
I have 2k miles on the vehicle, would/should I reface rotors?
Mike
Any recommendations on after market pads? No Squeal no mess?
I have 2k miles on the vehicle, would/should I reface rotors?
Mike
Pro
Joined: Sep 2004
Posts: 638
Likes: 2
From: Medford NY
St. Jude Donor '05-'07
Originally Posted by StanNH
As far as I know, GM is not putting in ceramic pads as a fix. They are merely installing softer pads. The 2006 uses the same OEM pads as the 2005, so the same fix applies.
http://www.corvetteactioncenter.com/....php?qstId=568
Team Owner
Joined: Sep 2000
Posts: 25,025
Likes: 2,716
From: Far NW 'burbs of Chicago
St. Jude Donor '13
Some folks say that the "squeal-less" pads for Z51 are simply the standard pads from a non-Z51 car. Other folks claim that there is a distinct squeal-less pad for Z51 that is different from the standard non-Z51 pad.
I asked the parts idiot at the local dealership but this was WAY over his head. Can someone inform me? Thanks.
I asked the parts idiot at the local dealership but this was WAY over his head. Can someone inform me? Thanks.
Racer
Joined: Nov 2005
Posts: 293
Likes: 0
I got the dealership to change my pads, and noticed that the car had much less bite than before. Still stops strong, but needed a considerably increase in braking force. I again changed my pads to Prostop Ceramics, from Pepboys, made by Raysbestos, and they already include quite shims on the pads, brake bite is better than before, no noise yet, and a noticable improvement in less powder on the rims.
Racer
Joined: Aug 2005
Posts: 302
Likes: 22
From: CAPE CORAL , FL
brake pads
if you don,t mind spending the money try porterfield r4s pads, about 240.00 front and back. got mine from livermore products. if installed properly no squeal, no dust after initial bedding (breakin), and better stopping than stock.
