Question about 2006 Chevrolet HHR

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Hhr hissing Makes a hissing noise by the break pedal. when breaks are pressed the noise stops. breaks are harder.

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: brakes

Most likely your vacumn power brake booster has failed. It is not rebuildable. You will need to buy a new one.

Posted on Sep 15, 2008

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SOURCE: 2002 tahoe breaks lock up during driving

i would check front and rear brakes if rears are drum brakes i would inspect springs and hardware making sure everthing is conected and in place also make sure they are adjusted properly in the front and if rear disc i would make sure to grease caliper slides these allow caliper to move and its important that all moving brake parts are free push caliper pistons in alittle to see if they are sized or not booster is ok and most of the time when master goes it will leak where it meets booster and you will have a low brake pedal or no brakes

Posted on Mar 31, 2009

  • 174 Answers

SOURCE: 2006 HHR trailer wiring?

Check ground wire to the trailer. On the vehicle and the trailer. Make sure you have a good ground as lighting will seek any path for ground which will feedback and cause lights to act really weird.

Posted on Oct 01, 2009

  • 921 Answers

SOURCE: brakes

Sounds like your power brake booster assembly is leaking...its attached to the master brake cylinder and you will see a hose going to it. Check the hose and make sure it on tight and isn't cracked. if the booster is bad it will have to be replaced. you could also have a master cylinder going bad...check for leaks and proper fluid levels.

Posted on Oct 03, 2009

  • 1187 Answers

SOURCE: I have excessive brake travel, and a hard time 98 chevy blazer

Two issues...
The brake booster has a ruptured diaphragm. Replace the booster.
It is located under the hood between the brake master cylinder and the firewall.

Your master cylinder may be leaking fluid internally past the plunger.
Have it examined when you change the booster.

Posted on Oct 12, 2009

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95 Chevy Tahoe had both front and back breaks replaced. Now a week later I hear a hissing noise when i push on break pedal and it's hard to push and barely stops .

You have a iar leak on the vacumn pipe which is most likely or the diaphragm inside the servo has split so ask a local mechanic for a opinion

Jul 25, 2014 | 1995 Chevrolet Tahoe

1 Answer

Brake Problem

yes but up to a point
the brake pedal should move about 1" to take up the pedal free play and then be applied smoothly as you press further
the harder you press the more solid stopping action you will get
that way you can feel the brakes working so that you can adjust the braking action for stopping
there should be no hissing noise that occurs when the brakes are being applied
you say hydro booster which is hydraulic booster but a hissing noise will come from an air leak in a vacuum brake booster which indicates that it needs repalcing

Apr 16, 2017 | 2001 Dodge Durango

1 Answer

2000 Chevy K3500 No Breaks. Bled breaks, not losing fluid, ABS and break lights on. Hydraulic booster system. makes hissing sound when breaks applied???

I think I would get the body computer scanned for trouble codes and find out why the ABS warning light is on first.
The hissing noise usually means the booster is leaking vac but if the booster was faulty the brake pedal would be hard to push.

Feb 09, 2013 | 1998 Chevrolet Blazer

1 Answer


You have a leaking power brake vacuum (this is what you hear) operated power booster. Go to this link to read the procedure of removing and pacing the power brake vacuum booster

Jul 12, 2012 | 1996 Jeep Grand Cherokee

1 Answer

All of a sudden my brake pedal is very soft, and makes a short hissing noise while being depressed. The hissing seems to be coming from that diaphram area above the brake pedal. The master cylinder is...

right, your booster diaphram has torn. You will have to replace the booster. Often this can be done without breaking the hydraulic system open. If you would like to do it yourself, let me know and I will send instructions.

Oct 27, 2010 | Ford Ranger Cars & Trucks

1 Answer

My 2006 chevy HHR is having a braking problem. I replaced the brake pads. However, when I press in the brake I hear a hissing sound and suggestions

Sounds like your power booster is bad. You are hearing a vacuum leak on the booster when you push the brake. It will also be accompanied by a harder than normal pedal.

Jun 23, 2009 | 2006 Chevrolet HHR

2 Answers

VW T4 2.5 TDI engine makes rattling noise no loss of power or smoke though, is it the tapetts the noise comes and goes

hi. that noise is the vacuum pump knocking. it should stop if you press the break pedal a few times or pull the pipe of the break servo. £120 on ebay half hour job to change

Mar 10, 2009 | 2005 Volkswagen Microbus

3 Answers

Brake makes a hissing noice when depressed

It may be a few different things, most of them relating to the brake booster. It could be a vacuum hose is loose or ripped (a simple fix, just replace the hose) which would correlate to a hissing noise outside the car. If there is a hissing noise inside the car it could be a tear in the booster on the inside of the car (trace the brake pedal up, at an angle, and then into a rubber 'boot' or 'fitting'. This is called the firewall by some people. With the car running (but in park) feel the rubber boot and see if you feel any air releasing, or if the noise diminishes when you cover certain parts of the boot). A tear internally means you need to replace the brake booster itself in some cases. This is a bit trickier to pull off if you don't have the experience.

Here is a picture of a standard booster/master cylinder.

Another (DANGEROUS) option if the booster itself is leaking is to disconnect the hose from the brake master cylinder, and clamp it off/plug the hose. This is the equivalent of having manual breaks, and will require a lot of pressure to engage the brakes (normally you are compressed air assisted by the booster). The only reason to do this is if the tear is large enough that you are losing engine power because of it. This will allow you to get to the next exit, next gas station, or (in some cases) 3 states away.

Jan 26, 2009 | 1999 Jeep Grand Cherokee

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