Brake Disc Pads problems of the 2009 Chevrolet Cobalt - part 1

About the third time that I have had to replace the rear brakes with in less than 30000 miles. The parking brake does not hold the car. The pads wear uneven, only the interior pad is being worn. Gm dealership continues to state that this is normal wear, which is impossible. And braking performance is compromised by this uneven and premature wear of the rear brakes.

Premature rear brake wear, noise started at 17500 miles, complete failure at 23500 miles, this car has been pampered and never driven in snow and only driven by one driver. Rotors are badly scored, pads gone, unheard of wear for this kind of mileage!.

Noticed parking brake not holding anymore. Then checked rear brakes and found rear passenger side inner brake pad (not the outer pad) completely worn out. . . . All other pads on car have atleast 70% pad left. Never seen anything like this before with this low of mileage with not being driven in any winters. Hope there is a fix for this! may be proportion valve design problem?.

At 20,300 miles, the inner rear brake pads had worn completely down to the metal and scored the rotors to the point they had to be replaced. The dealership maintains this is normal wear. The front brakes were fine and the outer rear pads while worn, were still within acceptable limits. After seeing numerous complaints on the NHTSA web site (144 out of 168 total complaints, or 86%) nearly identical to mine, this is clearly a glaring safety issue - 144 complaints for a low-volume 2-year old vehicle. I cannot understand why the NHTSA has not initiated an investigation already. Perhaps they are waiting for fatalities caused by this obvious defect before taking action. Updated ivoq 12/01/11.

Brake pads and rotors did not last. My brakes needed replacing way earlier than they should. It's a safety hazard.

At about 5000 miles I noticed grooves developing in the rear brake discs. At 10,000 miles I have only 35% left in the rear brakes as the grooves have deepened and now damage the pads every time they are engaged. At this rate the brakes will fail at before 16,000 miles of use.

The contact owns a 2009 Chevrolet Cobalt ss turbo. The contact stated his rear brake pads were prematurely wearing out rapidly. The rotors and brake pad never made any noise alerting the contact there was something wrong. When the vehicle was being serviced the mechanic showed him how the rotors and brake pads were worn. The vehicle was repaired. The failure mileage was 31,000 and the current mileage was 40,000.

Brakes started squealing a few months after buying the car brand new. Now, about 1. 5 years later, they are grinding an excessive amount and their performance has extremely decreased. I fear I will have to change entire rotors and pads to fix this problem out of my own pocket within the next month on good aftermarket parts since the factory can't produce good quality oem parts and general motors doesn't give a flying ****. I informed my local dealer of the problem and they shrugged me off, but only after wanting to charge me $60 to just look at them. I shouldn't have to pay for them to inspect brakes that are faulty in under 2 years, and 20,000 miles; and I also have an extended warranty that I paid for. Apparently, it's just mainly the rear brakes that are the issue with these cars, but every owner I know, who hasn't already replaced the brakes with aftermarket performance parts, have the exact same issue, and in some cases, much worse. If the brakes fail within the next month or two and an accident happens(quite possible since rust is appearing on one of my rear rims due to the rotors being scoured so excessively, I fear one of them may let go and snap completely off)before either a recall, or I put aftermarket products on, gm will be facing a lawsuit by yours truly; especially if serious injury occurs.

My rear brakes on my 09 Cobalt ss are wearing unevenly. My right side rear brake pads are completely used up and as a result have begun to grind on to the rotors and caused them to form pits, and or grooves. Very disappointing.

2009 chevy Cobalt ss turbo rear rotors scored badly driver side, inner rotor scored worse, 6,700 miles on the vehicle pads screech also at a stop.

Normal driving lead up to the extremely premature failure of the rear rotors and brake pads, increasing stopping distances which could result in a crash. I took my car to the Chevrolet dealer and, though at only 25,000 miles, they said I needed to *replace*, not resurface the rotors. 25k miles! to remedy the problem, I had to find and purchase higher-quality rotors and brake pads and had to pay to get them installed. I believe this surprising and extraordinarily early failure--even though it may fall under "maintenance"-- should be investigated.

I have a 2009 Cobalt ss. The rear brake rotors started scoring around 5,000 miles and and rear pads were completely worn away with 19,800 miles.

Inside rear brake pads completely worn through at around 20,000 miles. Dealer would not cover brakes so new aftermarket pads were purchased and installed.

A terrible grinding coming from rear brakes. The brakes wear out too quickly (and the rotors are being scored at 100mile-20,000mile cars) also inside rear pads start to get noisy.

I just bought a 2009 Cobalt ss that only has 3289 miles on it and the rear brakes are already going bad, and the rear rotors are getting deep gouges. This could be a very bad problem. Would hate to see this turn into another Toyota thing specially when the ss is such a great car. I think a recall should be done and better rotors and pads should be put on the ss Cobalt.

Uneven and excessive wear on the rear brake pads and rotors. When the dealership pulled the pads there where chunks of metal that appeared to be rotor material embedded in the pads.

Front & rear rotors scored severely with deep grooves throughout. The car has less than 12,000 miles. Braking is severely hindered during wet conditions and periodically the brakes are noising making "screeching" sounds as though metal to metal is touching during braking. Problem is most likely due to brake pads being far to hard of a material causing excessive wear on the rotors.

2009 Cobalt ss - rear brakes worn. The dealer has ordered new rotors but not pads.

I have a 2009 chevy Cobalt ss with excessive rear brake wear on the rotor and pads. The front brakes show normal wear, but the rear rotors have major grooves in the inner surface.

1) daily driving, 90 percent highway, 10% city. No abnormal driving leading to situation. 2) very pitted and worn rear disc rotors, loud and becoming dangerous. 3) new rotors, aftermarket, new pads, aftermarket.

The contact owns a 2009 Chevrolet Cobalt. The contact stated the rear brakes would squeak when applied while driving at any speed. The contact also stated the brake pedal would vibrate when the failure occurred. The vehicle was taken to an authorized dealer who stated that the rear rotors were warped and the brake pads needed to be replaced. The vehicle was repaired. The failure recurred three times and was repaired twice by an authorized dealer. The failure mileage was 100 and the current mileages was 36,000.

Brakes failed, slid in the snow and hit the passenger rear rim against the curb. This even lead to the rim being replaced, along with the axle. After the car was fixed, I took the car back to the dealer where it was looked over too see if there were any manufacturer's defaults. Then I was told they could do nothing for me because they only had a 12 month/12,000 mi. Warranty, and my car was 17 months old and had 19,200 mi. , so I had to file a complaint with general motors. I then replaced the rotors and pads around the entire car, out of pocket.

Brakes failed, slid in the snow and hit the passenger rear rim against the curb. This even lead to the rim being replaced, along with the axle. After the car was fixed, I took the car back to the dealer where it was looked over too see if there were any manufacturer's defaults. Then I was told they could do nothing for me because they only had a 12 month/12,000 mi. Warranty, and my car was 17 months old and had 19,200 mi. I then replaced the rotors and pads around the entire car.

I noticed that the rear brake rotors were slightly scored when I got the car from the dealership new, I didn't think much of it since I was excited to get the car. They also make noise then applying the brakes. I've noticed to that some times after driving and parking, I can smell burning brake pad material. I currently have about 2500 miles on the car and the rotors have scored more considerably. I believe that the pads and rotors won't make it another 2500 miles without being replaced. After searching the internet I found that others are having this same issue with their cars. The car is a 2009 Chevrolet Cobalt ss sedan. I found that this issue affects the ss sedan and ss coupe alike. It would be nice if gm would issue a recall on this, as this could pose a potential safety issue down the road.

I noticed that the brake rotors were slightly scored when I got the car from the dealership new, I didn't think much of it since I was excited to get the car. They also make noise then applying the brakes. I've noticed to that some times after driving and parking, I can smell burning brake pad material. I currently have about 2500 miles on the car and believe that the pads and rotors won't make it another 2500 miles without being replaced. After searching the internet I found that others are having this same issue with their cars. The car is a 2009 Chevrolet Cobalt ss sedan. I found that this issue affects the ss sedan and ss coupe alike. It would be nice if gm would issue a recall on this, as this could pose a potential safety issue down the road.

I have a 2009 chevy Cobalt ss and the rear brakes are getting grooves in it bad. Only 1500 miles on it when it started. Pads have good amount left but they make this god awful squeal. Like they been driving on them for over 50000k but not even 10000k.

The rear brake rotors are showing deeper than normal grooves at less than 4000 miles. Pads showing premature wear. Front rotors are nice and smooth.

Rear brakes on vehicle begin by squeaking regularly. Upon inspecting them at roughly 6000 miles on the brand new car, the inner brake pads are completely worn while the outer pads are nearly new (as they should be). One possible cause of this is that the parking brake spring is not strong enough to hold the inner pads from rubbing the rotors when the parking brake is disengaged. Gm should recall this brake issue as it will continue to cost buyers hundreds every few thousand miles, when all that is needed is likely a spring with a better spring rate.

Car had approximately 15,000 miles on it when the back brake pads wore out. Took the vehicle to my mechanic he said something was not right and I should take it to the dealer and get it fixed for free due to faulty install. Dealer assured me there was nothing wrong and charged me a 60 dollar diagnostic fee. Why would the back brake pads wear out before the front. . And why at 15,000 miles with conservative driving? something is clearly faulty with either the brake pads themselves or how they are being installed.

The inside brake pads on my 2009 Cobalt ss turbo chew up way too quickly. They wore out on the inside with less than a year of highway driving. They wear unevenly with the outside brake pads in the rear and the front brake pads, which are still the thickness of new.

2009 Cobalt ss. The inner rear brake pads are completely gone while the outer brake pads still have over 80% life left on it. Brought the car to rick hendrick chevy and the dealership refuse to fix it under warranty. They said it was normal. The car has 23k miles on it, just about all of that is high way miles. I drive the car normal and do no abuse it. Also want to state that the front brakes still have over 50% life left.

My Cobalt ss t/c has 9000 miles on it and I have been experiencing a very loud squeal coming from the front brakes since 5000 miles. Rotors were turned by dealership and pads replaced yet the squeal remains. A squeal so loud it can't be ignored yet gm states in a bulletin released recently that this is normal for high performance brakes. Gm needs to be held responsible for the hundreds of complaints of this braking system in recent months. Thank you.

Rear brakes are wearing down unusually fast, particularly on the inside surface where it is hard to see. Brake rotors are grooving severely. Dealer has resurfaced the rotors and sanded the pads once already less than 4000 miles ago, and now they will have to be replaced. Clearly, failing brakes is a serious issue.

The rear brakes on my 2009 Chevrolet Cobalt ss are failing at just 2400 miles on the odometer. The inner pads have worn down too quickly, causing excessive grooving on the rotors. This has decreased brakes performance vastly.

The rear brakes of my 2009 Chevrolet Cobalt ss are worn down the metal after approx. 15 000km. The inside pads was metal on metal, and the out side pads were found to be still 80%. All parts are being covered under warranty, but many people have had the same problem after all parts were replaced. Rear brake pads and rotors are being replaced.