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did you notice this strange sound?

5926 Views 14 Replies 10 Participants Last post by  shawn672
When you are in your car running and it is quiet, ( no radio, talking etc) every time you step all the way down on the break pedal you can here a electronic sound. Does not matter what gear I m in.... I assume it normal and part of the drive/neutral system this car has.
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Brake Hissing

I have a LTZ and I've noticed a hiss whenever I'm pressing down or letting off of the brake pedal. It sounds like it's coming from the master cylinder, but I haven't been able to pinpoint it exactly.

I first thought it could of been a vacuum leak, but the dealership said the noise is normal and there's nothing to worry about. Despite what I've been told, it still seems like a strange noise.

Any thoughts?
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