# Chevy Cruz brakes air noise

**URL:** <https://community.cartalk.com/t/chevy-cruz-brakes-air-noise/88354>\
**Category:** Maintenance/Repairs\
**Tags:** noises, brakes\
**Created:** [December 13, 2014, 11:54pm UTC](https://community.cartalk.com/t/chevy-cruz-brakes-air-noise/88354 "2014-12-13T23:54:46Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Collinsk533](https://avatars.discourse-cdn.com/v4/letter/c/b5a626/32.png) [@Collinsk533](https://community.cartalk.com/u/Collinsk533)\
**Post date:** [December 13, 2014, 11:54pm UTC](https://community.cartalk.com/t/chevy-cruz-brakes-air-noise/88354/1 "2014-12-13T23:54:46Z")

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I have a 2014 cruze, and when I press down the brake there is a loudish noise that sounds like air blowing out that I hear coming from the outside of my car. When this happens, my brake pedal also pushes closer to the floor. I noticed this maybe 1 month after I purchased, so I’m not sure if this is standard or something I should be concerned about. Anybody else experience this noise?

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**Author:** ![knfenimore](https://avatars.discourse-cdn.com/v4/letter/k/9fc348/32.png) [@knfenimore](https://community.cartalk.com/u/knfenimore)\
**Post date:** [December 14, 2014, 2:20am UTC](https://community.cartalk.com/t/chevy-cruz-brakes-air-noise/88354/2 "2014-12-14T02:20:21Z")

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This is the brake booster. See if the vacuum line to the booster is leaking. The booster is the round can between the master cylinder and the firewall.

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**Author:** ![jtsanders](https://avatars.discourse-cdn.com/v4/letter/j/c2a13f/32.png) [@jtsanders](https://community.cartalk.com/u/jtsanders)\
**Post date:** [December 14, 2014, 2:33am UTC](https://community.cartalk.com/t/chevy-cruz-brakes-air-noise/88354/3 "2014-12-14T02:33:54Z")

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Actually, let the dealer do it. Your car is under warranty.

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**Author:** ![the\_same\_mountainbike](https://avatars.discourse-cdn.com/v4/letter/t/c89c15/32.png) [@the\_same\_mountainbike](https://community.cartalk.com/u/the_same_mountainbike)\
**Post date:** [December 14, 2014, 6:41am UTC](https://community.cartalk.com/t/chevy-cruz-brakes-air-noise/88354/4 "2014-12-14T06:41:53Z")

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+1 to jt’s recommendation.  
+1 to knifenmore’s educated guess; but I was thinkin’ the check valve.

NOTE: if they give you a BS line of “that’s normal”, try another of the same on their lot and see if it makes the same noise. When it doesn’t, demand that they determine why yours does.

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**Author:** ![George\_San\_Jose1](https://avatars.discourse-cdn.com/v4/letter/g/e5b9ba/32.png) [@George\_San\_Jose1](https://community.cartalk.com/u/George_San_Jose1)\
**Post date:** [December 15, 2014, 5:53am UTC](https://community.cartalk.com/t/chevy-cruz-brakes-air-noise/88354/5 "2014-12-15T05:53:51Z")

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Good comments above. Not an uncommon complaint heard here. Most likely either some problem w/the vacuum hose to the brake booster or the brake booster diaphragm itself has a leak in it. Less likely, if there’s a vacuum storage container on this vehicle, that could be leaking.

In any event, this is a serious safety issue, should be under warranty, and needs to be addressed asap.