View Poll Results: When did you first notice rotor scoring/grinding? If no issue, how many mi on SS/TC?
Problem @ 1-5000 mi
136
25.61%
Problem @ 5001-10000 mi
83
15.63%
Problem @ 10001-15000 mi
40
7.53%
Problem @ 15001+ mi
39
7.34%
No Problem @ 1-5000 mi
43
8.10%
No Problem @ 5001-10000 mi
24
4.52%
No Problem @ 10001-15000 mi
18
3.39%
No Problem @ 15001+ mi
30
5.65%
Voted just to see results
118
22.22%
Voters: 531. You may not vote on this poll
Wearing rear brakes? Come in
08-06-2009, 08:33 PM
#376
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NHSTA complaints
Has anybody tried these rotors?
http://www.topbrakes.com/bb.cfm
These are the only aftermarket rear rotors I have found for the Cobalt SS. No, they are not slotted or cross drilled, but they have a 2 year warranty. When the problem comes back, I want to know my options.
09 SS/TC, LSD, Performance gauges, & big wing. Still stock.
Last edited by Billdayton; 08-06-2009 at 08:33 PM. Reason: Automerged Doublepost
08-07-2009, 07:47 AM
#377
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No, I don't actually. The rear brakes on 08+ are not "perfomance" brakes, everyone knows that unless they don't know what they're talking about. They're a tad bit bigger than average and that's it.
I'm refering to the whole concept of putting a performance oriented brakes setup on a car yet putting on poor quality parts (ie: pads) which is obviously the case here. It's nonsense.
I'm refering to the whole concept of putting a performance oriented brakes setup on a car yet putting on poor quality parts (ie: pads) which is obviously the case here. It's nonsense.
In turn... the BAD design on the rear is the caliper and rotor for THIS brake pad. Change the pad to something street oriented (EBC green stuff for example or Hawk) problem will clear itself. The pad wearing so much on the piston side is self explained by the high bite on the pads. I can guarantee you changing the caliper to a 2 piston with equal clamping loads would simply chew up the rotor more with these pads.
08-10-2009, 03:17 PM
#379
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CAC response
I didn't get complete satisfaction, but it can do some good to contact CAC. Long story short, I had my rear rotors turned at 4600 miles, at my expense ($96.xx). When it happens again, I am on record, and if I need any service at my expense, it will be covered up to $100.
95 Corvette, 09 Cobalt SS - LSD, performance gauges, aero wing - stock.
95 Corvette, 09 Cobalt SS - LSD, performance gauges, aero wing - stock.
CHEVROLET Customer Assistance Center
Chevrolet Division
August 6 2009 General Motors Corporation
° ' P.O. Box 33170
Detroit, Ml 4S232-5170
Bill Dayton
xxxxxxxxxxxxxx
xxxxxxxxxxxx
Dear Bill,
At Chevrolet, we take pride in the vehicles we produce and appreciate the tune you took to contact us.
Because customer satisfaction is a top priority for us, please accept this letter worth up to $100 towards your next maintenance service or repair on your 2009 Chevrolet Cobalt.
This offer is valid towards one service visit on VIN 1G1 API8X697142826. In the event the cost of your service exceeds the $100 maximum value, you will be responsible for paying the difference. If the total cost of your services is less than $100, a credit or refund will not be issued. This letter is not transferable and is valid for 12 months from the date of issue.
We hope this gesture demonstrates our appreciation of you as a valued customer. Simply present this letter to any Chevrolet dealership for redemption. If you have future questions, please don't hesitate to email us using the Contact Us link at Chevrolet.com or call us at 1-800-222-1020.
Sincerely,
Chevrolet Customer Assistance Center Service Request 71-744703709
For more information regarding the maintenance and care of your vehicle, please visit www.gmownercenter.com. This free online service offers vehicle and ownership-related information and tools tailored to your specific vehicle.
ATTENTION: DEALERSHIP SERVICE MANAGER
When submitting the claim, please use labor op Z7092, insert the amount hi the net item column, and insert the CAC Service Request number in your comments. This original letter must be surrendered by the customer and retained by the dealer for audit purposes.
I General Motors Corporation
Chevrolet Division
August 6 2009 General Motors Corporation
° ' P.O. Box 33170
Detroit, Ml 4S232-5170
Bill Dayton
xxxxxxxxxxxxxx
xxxxxxxxxxxx
Dear Bill,
At Chevrolet, we take pride in the vehicles we produce and appreciate the tune you took to contact us.
Because customer satisfaction is a top priority for us, please accept this letter worth up to $100 towards your next maintenance service or repair on your 2009 Chevrolet Cobalt.
This offer is valid towards one service visit on VIN 1G1 API8X697142826. In the event the cost of your service exceeds the $100 maximum value, you will be responsible for paying the difference. If the total cost of your services is less than $100, a credit or refund will not be issued. This letter is not transferable and is valid for 12 months from the date of issue.
We hope this gesture demonstrates our appreciation of you as a valued customer. Simply present this letter to any Chevrolet dealership for redemption. If you have future questions, please don't hesitate to email us using the Contact Us link at Chevrolet.com or call us at 1-800-222-1020.
Sincerely,
Chevrolet Customer Assistance Center Service Request 71-744703709
For more information regarding the maintenance and care of your vehicle, please visit www.gmownercenter.com. This free online service offers vehicle and ownership-related information and tools tailored to your specific vehicle.
ATTENTION: DEALERSHIP SERVICE MANAGER
When submitting the claim, please use labor op Z7092, insert the amount hi the net item column, and insert the CAC Service Request number in your comments. This original letter must be surrendered by the customer and retained by the dealer for audit purposes.
I General Motors Corporation
08-27-2009, 08:44 PM
#383
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Add me to the list. Warranted at 15,000KM (about 9,500Miles). Still have about 30% left on my inside pads. 90% on my outside. Rotors are also being replaced. Pads are on backorder.
09-02-2009, 08:10 AM
#386
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Taking mine in on Friday for the THIRD time.
8000 miles---inner rear pads metal on metal. Pads replaced/rotors turned
11,500 miles--inner pads metal on metal. Pads replaced/rotors turned/calipers replaced
19,500 miles---rear brakes clunking when applied in reverse. We'll see Friday whats up!
8000 miles---inner rear pads metal on metal. Pads replaced/rotors turned
11,500 miles--inner pads metal on metal. Pads replaced/rotors turned/calipers replaced
19,500 miles---rear brakes clunking when applied in reverse. We'll see Friday whats up!
09-02-2009, 08:19 AM
#387
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Had to have my all my brakes rebuilt because of the same problems. I think it's a factory defect.
EDIT: From what I remember it had to with a the calipers. They had to rebuild them because it the rubbing was cause uneven wear, and metal on metal rubbing.
Best way I can sum it up, is it was like driving with the brakes partially engaged all the time.
Oh and it wasn't a cheap rebuild...cost me buying a turbo setup
EDIT: From what I remember it had to with a the calipers. They had to rebuild them because it the rubbing was cause uneven wear, and metal on metal rubbing.
Best way I can sum it up, is it was like driving with the brakes partially engaged all the time.
Oh and it wasn't a cheap rebuild...cost me buying a turbo setup
09-02-2009, 08:44 AM
#388
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1. complain to the CAC - I got a $100 credit towards my next service after having the rear rotors turned at my expense (4400 miles).
2. File a complaint with the NHSTA at http://www-odi.nhtsa.dot.gov/ivoq/index.cfm. With all the bitching on this thread about the problem, they only have 25 complaints on 08 & 09 Cobalt SSs. We may never have enough complaints to force a recall, but it makes good reading for your dealer!
Bill Dayton
95 Corvette for sale, 09 Cobalt SS
2. File a complaint with the NHSTA at http://www-odi.nhtsa.dot.gov/ivoq/index.cfm. With all the bitching on this thread about the problem, they only have 25 complaints on 08 & 09 Cobalt SSs. We may never have enough complaints to force a recall, but it makes good reading for your dealer!
Bill Dayton
95 Corvette for sale, 09 Cobalt SS
09-03-2009, 09:49 AM
#389
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I have a 09ss/tc and i have a problem with my back rotors with lines and grooves in them. i only have 4000 miles on my car now. i took it to the dealership at 3500 and the shop manager argued with me that it is normal wear and tear and that the back brakes are "aggressive" style pads. And he argued that the back do more stopping power than the front. so i asked why are brembos on the front not the back... no answer. so he got the head guy in the shop to look at them and sure enough it isnt normal... who woulda thought, so i now have to bring it back in a couple months because they told me my car is too new to do anything about it. They are a bunch of lazy @$$holes.
09-03-2009, 10:17 AM
#390
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mine just hit 3000 miles and left it at dealership to get brakes fixed.
i love my ss 09 tc but the reason i got this new car was to not have to fix this **** every week.
every week or 2 theres a new problem.. i think kids manufacture gm cars. this is ridiculous.
this is 4th time my car visits the dealership for some sort of repair.
i love my ss 09 tc but the reason i got this new car was to not have to fix this **** every week.
every week or 2 theres a new problem.. i think kids manufacture gm cars. this is ridiculous.
this is 4th time my car visits the dealership for some sort of repair.
09-03-2009, 10:48 AM
#391
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I have a 09ss/tc and i have a problem with my back rotors with lines and grooves in them. i only have 4000 miles on my car now. i took it to the dealership at 3500 and the shop manager argued with me that it is normal wear and tear and that the back brakes are "aggressive" style pads. And he argued that the back do more stopping power than the front. so i asked why are brembos on the front not the back... no answer. so he got the head guy in the shop to look at them and sure enough it isnt normal... who woulda thought, so i now have to bring it back in a couple months because they told me my car is too new to do anything about it. They are a bunch of lazy @$$holes.
While the rotors will look somewhat scuffed up from the more agressive compound, grooving and the inbound pad wearing faster than the outbound pad is not normal; no matter how GM tries to explain it they can't get out of it. The rear pads should be wearing relatively evenly unless only the inbound pad is making the majority of contact with the rotor; pretty simple explanation but sounds like your service department is simply trying to get out of it.
09-03-2009, 01:23 PM
#392
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I have a 09ss/tc and i have a problem with my back rotors with lines and grooves in them. i only have 4000 miles on my car now. i took it to the dealership at 3500 and the shop manager argued with me that it is normal wear and tear and that the back brakes are "aggressive" style pads. And he argued that the back do more stopping power than the front. so i asked why are brembos on the front not the back... no answer. so he got the head guy in the shop to look at them and sure enough it isnt normal... who woulda thought, so i now have to bring it back in a couple months because they told me my car is too new to do anything about it. They are a bunch of lazy @$$holes.
Billdayton
95 Corvette, 09 Cobalt SS
09-08-2009, 03:16 PM
#393
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Just thought I'd throw this out there. Car went in today with just shy of 11,000km on it (~6900 miles) since my rear rotors felt/looked a little rough on the inbound side. They checked the rotors and pads and measured the pads all as wearing within 1mm of eachother so the inside and outside rears are wearing almost evenly. Essentially the front and rear (short of the rear rotors) look almost new which I may or may not be able to attribute to always downshifting in town when I can. They said there is some scoring of the rotors but to keep an eye on it since it's not completely unheard of with the new brake compounds GM is using on a number of vehicle (not just the TCs) in case it gets worse.
I'll be keeping an eye on them for the next 10,000km or so and see how it goes especially with the winter months just around the corner.
I'll be keeping an eye on them for the next 10,000km or so and see how it goes especially with the winter months just around the corner.
09-13-2009, 08:00 AM
#394
Senior Member
Just so you guys know, if anyone does have there brakes wearing bad and are thinking of replacing them I have a brand new set of Rear Rotors that I bought for my TC cause the rears were wearing. Unfortunatly I don't have the TC anymore and selling the rear rotors brand new, never used for $65+ shipping. Let me know
09-14-2009, 02:28 PM
#395
Junior Member
I have been watching mine like a hawk !
So far, I have not felt anything out of the ordinary on the back side of the back rotors.
I do have a small groove in the outer diameter of the rear passenger rotor outside,
similar in appearance to this : ( thanks , krispy !
)
Again, it is on the outside, and been there since I got the car w/ 2xx miles on it.
I wonder if just like some cars got the SS trim on the inside, and some did not ( mine did not ) , perhaps some cars got the rear caliper slide pins lubed, and some did not ?
That might explain the rapidity of the pad wearing for those who had the "joy"
of experiencing it.
Britt
I do have a small groove in the outer diameter of the rear passenger rotor outside,
similar in appearance to this : ( thanks , krispy !
) Again, it is on the outside, and been there since I got the car w/ 2xx miles on it.
I wonder if just like some cars got the SS trim on the inside, and some did not ( mine did not ) , perhaps some cars got the rear caliper slide pins lubed, and some did not ?
That might explain the rapidity of the pad wearing for those who had the "joy"
of experiencing it.Britt
11-15-2009, 11:52 PM
#396
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ok so i was at the dealer friday and i am now getting my rotors and pads replaced under warrenty i only have 8k on the car and i belive the only reason they are doing this is because another ss/tc guy was in there gettin his replaced so i was a liltle angry when speaking to them.
As for people who have gotten thiers replaced is the problem solved or still existing?
As for people who have gotten thiers replaced is the problem solved or still existing?
11-15-2009, 11:59 PM
#397
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ok so i was at the dealer friday and i am now getting my rotors and pads replaced under warrenty i only have 8k on the car and i belive the only reason they are doing this is because another ss/tc guy was in there gettin his replaced so i was a liltle angry when speaking to them.
As for people who have gotten thiers replaced is the problem solved or still existing?
As for people who have gotten thiers replaced is the problem solved or still existing?
Bill Dayton
95 Corvette, 09 Cobalt SS Victory Red
11-16-2009, 12:09 AM
#398
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I had my rotors turned at 4600, and pads & rotors replaced at 8000. The paperwork I got back included "lube calipers pins & Slides" Now, with 9300, I still see nothing but the original machining, no evidence of scoring, so I'm optimistic!
Bill Dayton
95 Corvette, 09 Cobalt SS Victory Red
Bill Dayton
95 Corvette, 09 Cobalt SS Victory Red
11-19-2009, 02:15 PM
#399
i'm trying to set up an apt date with this asap.
i have 750 miles on the car, and i already hear the rear breaks squeaking.
-edit-
just took my car in waiting for a response now.
Last edited by ei3dag3; 11-19-2009 at 03:54 PM.
11-19-2009, 04:49 PM
#400
After the long awaited backorder the rotors showed up for the rear, but still no pads.
Last edited by cmiller8006; 11-19-2009 at 04:49 PM. Reason: Automerged Doublepost