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Old 12-15-2009, 10:10 PM   #1 (permalink)
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Lightbulb breaks squeeling.

Hey guys

okay, so I have an 09 cobalt ss/tc and it has about 4k miles on it. The breaks have been squeaking/squealing for like the last 1k miles.. It's really annoying.. The chevy dealer says its just because the car is new and they need to be worn in.. but liike.. why didnt this happen the first few months then?? Any ideas on how i can fix this, I was going to try to lube the brake drums maybe? but any help would be much appreciated. Thanks ! ^^
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Old 12-15-2009, 11:20 PM   #2 (permalink)
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First of all, you wont find any brake drums on your 09 SS.

Unfortunately GM says the brake pads for the cobalt ss are a performance brake pad and some squeaking is normal. If its really excessive about the only thing you can do is replace the brake pads. Again, unfortunately, if you have the dealer do it under warranty they will replace them with gm pads and they will probably start squeaking again soon. I know this, Im a brake/front end guy at a chevy dealership.

Something to try.... Drive about 35-40 mph and make a really hard stop to about 5 mph, hard enough to stop fast but not hard enough to activate the abs. Do this 4 or 5 times aloowing enough time in between to allow the brakes to cool back down. This will burnish off any glaze on the brake pads and rotors (hopefully). Another to try would be to remove the brake pads, lightly sand the friction surface, reinstall, then to the brake burnish proceedure again.

Also remember, road grime, moisture, tire shine spray, will all make the brake pads haev noise. Ive seen alot of vehicles in the shop with bad brake noise that have tire dressing sprayed pretty much all over tires, wheels, sides of vehicles, etc. Put that stuff on just the tires, then wipe it off before driving.

Hope this helps.
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Old 12-16-2009, 04:38 PM   #3 (permalink)
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Quote:
Originally Posted by chevyrodney View Post
First of all, you wont find any brake drums on your 09 SS.

Unfortunately GM says the brake pads for the cobalt ss are a performance brake pad and some squeaking is normal. If its really excessive about the only thing you can do is replace the brake pads. Again, unfortunately, if you have the dealer do it under warranty they will replace them with gm pads and they will probably start squeaking again soon. I know this, Im a brake/front end guy at a chevy dealership.

Something to try.... Drive about 35-40 mph and make a really hard stop to about 5 mph, hard enough to stop fast but not hard enough to activate the abs. Do this 4 or 5 times aloowing enough time in between to allow the brakes to cool back down. This will burnish off any glaze on the brake pads and rotors (hopefully). Another to try would be to remove the brake pads, lightly sand the friction surface, reinstall, then to the brake burnish proceedure again.

Also remember, road grime, moisture, tire shine spray, will all make the brake pads haev noise. Ive seen alot of vehicles in the shop with bad brake noise that have tire dressing sprayed pretty much all over tires, wheels, sides of vehicles, etc. Put that stuff on just the tires, then wipe it off before driving.

Hope this helps.
It definitely explains alot, thanks !
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Old 12-16-2009, 10:47 PM   #4 (permalink)
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My front ones squeal like frikkin crazy. If its below 30 degrees outside, they do it 100% of the time when coming to a stop.
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Old 12-17-2009, 10:49 AM   #5 (permalink)
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Invest in Carbon Ceramic brake pads to reduce the noise?

Semi-Metallic brake pads whine like crazy because they are a harder compound. If your vehicle was OE with Semi-Metallic then there is your problem. My first set of Brakes NEVER squeaked unless I did excessive braking. My second set does it ALL the time because they are Semi-Metallic.
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