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When i press the brake pedal on my 2003 chevy tahoe there is a loud whooshing sound, what is causeing this?

New brake lines, new brake fluid and brakes bled, but have no pressure when I press the brake pedal and I get this whooshing sound from under the dash around the brake pedal area, why? and how can I fix it?

Posted by Gerald Johnson on

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2 Answers

Joe Stanton

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  • Cars & Trucks Master
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You have a bad vacuum booster. The diaphragm in the booster is ruptured resulting in vacuum loss and no power assist to the brakes. Do not drive in this condition, loss of control (stopping) hazard exist.. Replace Power Brake Booster. Since replacement of the booster requires removal of the master cylinder, replace the master cylinder as well, It is old (2003) and time for replacement

Posted on Jul 17, 2017

  • Gerald Johnson
    Gerald Johnson Jul 17, 2017

    thank you will replace it tomorrow.

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Steve

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  • Cars & Trucks Master
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Maybe the vacuum booster behind the master cylinder. is the vacuum hose hooked up to it?? it could be leaking internally. you need a vacuum pump to test it though.

Posted on Jul 17, 2017

Testimonial: "thank you, I thought it maybe that but wanted to be sure."

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5 Related Answers

lastech

manuel domingo

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SOURCE: 2006Vito.Bled all callipers now pedal drops underfoot

hi,replacing all brake pad are not required to bleed the brake system,brake pad goes in flooring because the system have air,abs system is out,try to bleed the system again,if not bring to your dealer,they have a bleeding machine,ty

Posted on Mar 22, 2009

Jonah Oneal

  • 14092 Answers

SOURCE: brake pedal losses pressure 1 to 2 pumps back to full pressure.

you still air in system or a bad master cylinder or brake booster.

Posted on Apr 03, 2009

cadman000

Eric Heifetz

  • 607 Answers

SOURCE: Noise under dash when applying brake pedal

Well, now being 60, might be a bit of a challange for me , but if I had to..... anyway dress comfortably, push the front seat back as far as you can. Now lay on your back looking up UNDER the L/S of the dash where you hear the noise and LOOK. for something loose. Open the hood, look for something loose under the L/S of the windhield. Nothing to lose. Hope this helps

Posted on Apr 20, 2009

Anonymous

  • 232 Answers

SOURCE: brake light stays on after replacing brake line and bleeding

You may need to do a code scan,this will reset the computer and reset any codes if the brake problem has been taken care of.Autozone Shucks/Kragen/O'Reilly's will do this for free.

Posted on May 31, 2009

2coolrick

Cool Blue Services

  • 560 Answers

SOURCE: Have prodigy trailer brake control Have

When installing the trailer break controller, 4 things must be considered carefully and objectively . 1.Safety regarding the mounting of the controller with respect to the drivers ability to control the vehicle without any hindrance whatsoever . 2.The dirvers ease of access (and control) of the coltroller while actually driving.....not sitting in the driveway....and lastly.... 3. The expected and assured 100% faith in the controllers ability (by the driver) to function without failure (no exceptions allowed) AND as designed to function (not ***-u-med), by properly mounting the unit and performing the correct electrical aspects of the installation without "shortcutting or jerry rigging" (no exceptions allowed)
4. The trailer brakes themselves. Ie. Shoes, drums, actuators, mechanical and electrical components etc. And last.....but too often forgotten....axle bearings maintenance / checkups / and tires condition and proper air pressure attained with a reliable tire guage....Did I mention checking the trailer lights functions ??? Good Luck...Happy Safe Motoring..

Posted on Sep 05, 2010

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1 Answer

When I press the brake pedal it's real hard and there's a loud whussing sound but the pedal doesn't go down


You power brake vacuum booster is bad , that would be my first thought . What make vehicle do you have ? Under the hood in the engine compartment behind the brake master cylinder is a round metal object , this is the brake booster ! The rubber diaphragm inside is bad ! The whooshing sound is vacuum leaking out of the diaphragm !

Jul 21, 2015 | Cars & Trucks

1 Answer

How do I replace a brake booster on a 1998 Buick LeSabre? Brakes hold but make a whooshing when applied.


May not be the booster as some do make a noise when the brakes are applied. To test press the brakes several times with engine off, Press the pedal down hard and start the engine , the pedal should move down slightly and there should be no whooshing sound . if the above is ok so is the booster.

Mar 26, 2015 | 1998 Buick LeSabre

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Not getting any brake fluid to rear drums to a 1997 Chevy Tahoe


Must bleed air from brake lines. Done so with help of a friend to pump brake pedal a few times and hold while you loosen and immediately retighten the bleeder screw located right where the line enters drum on the back. Use care, as fluid will start to drain out as air is eliminated in line. Do this repeated times. When only fluid escapes you are finished!

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1 Answer

2002 chevy tahoe no front brakes only rear brakes


IT appears that only half of the master cylinder has bled properly. Try loosing the pipe nuts at the m/cyl and gently pump the pedal until you get fluid out of both lines. Then re-bleed the system starting at the longest line first ending at the shortest. Some master cylinders have a plunger fitted in the middle of the cylinder and this is there to still have brakes if a line fails. It may be necessary to remove it an plug the hole temporarily while you bleed the system as to stops one piston in the cylinder from moving and allowing proper bleeding

Jul 17, 2013 | 2002 Chevrolet Tahoe

1 Answer

I have a 96 Tahoe and when i press the brake pedal i hear a hissing sound by the pedal and engine sometimes stalls, what could the problem be ?


That sounds like a brake booster problem. The brake booster runs on engine vacuum to help make the brake pedal easier to push and easier to stop the tahoe. When a booster develops an internal leak, you can hear the vacuum escaping through the leak when you step on the brake. The engine stalls because the vacuum leak in the brake booster also causes a large vacuum leak for the engine.

To verify that this is actually the problem, go outside the vehicle with the hood open. Find the large brake fluid reservoir attached to a large round metal black (usually) canister on the driver's side of the firewall. (back of the engine compartment.) There is a large black rubber hose pushed into the top of the black canister, which is the vacuum line attached to the brake booster. Pull the rubber hose out of the grommet on the booster and stick your finger over the hose. Have someone start the tahoe. You will feel a considerable amount of vacuum pulling at your finger, and if you take your finger off the hose, the engine will stall. Also have someone step on the brakes while your finger is over the vacuum hose. If the noise is gone then you know the problem is in the brake booster.
Don't forget to re-attach the vacuum line to the brake booster. Failure to do this will result in the engine running very rough (if at all) and the brakes will require excessive effort to try to stop the tahoe.

Aug 05, 2011 | 1996 Chevrolet Tahoe

2 Answers

Brakes are making a loud sound. How can i tell if it needs brake fluid?


Check the reservoir under the hood.

The brakes making noise has nothing to do with fluid level, though.

There's a good chance your brakes are glazed from overheating or they are in need of replacement. There are sometimes pieces of metal which rub the rotor and make a loud squealing noise when you press the brake - they're wear indicators.

Aug 20, 2010 | 2003 Jeep Liberty

2 Answers

Hello, i replaced the brake calipers on my 2002 chevy Tahoe, now i cant get any fluid to the calipers. I even tried the suction tool still nothing.


take the line loose at the hose if you get fluid change both hoses they might have been the reason the calipers needed to be changed also check to make sure you didnt twist the hoses because this can also pinch off fluid hope this helps good luck

Aug 18, 2010 | 2003 Chevrolet Tahoe

1 Answer

Is the brake booster going out?


Let me know what you find out. I get the same whoosh/pedal travel, and at this point have NO braking at all. I am also losing fluid nearly as fast as I can put it in if I use the brakes, but I can't find where it's coming out. I even drove on clean snow and don't see any fluid tracks...

Oddly enough if you are going to do it yourself, gmpartsdirect seems to have the best prices for OEM parts.

I am assuming that my rusted/pitted brake lines have failed me. Aaahhh the old money pit.

Jan 13, 2009 | 1999 Pontiac Grand Am GT

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