Question about 2001 Chevrolet Blazer

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No brakes push pedal to floor

Still have lots of brake fluid,petal still spongy .we have bled brakes twice. it didn't get no better.

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Check vacuum booster[power booster attached to master cylinder]check the vacuum lines for cracked or damaged- also diaphragm may be damaged internally

Posted on Oct 02, 2009

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Leaky rear break cylinder or master cylinder

Posted on Oct 02, 2009

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Why are you bleeding the lines, What was replaced that required you to bleed brakes? Did you replace master cylinder? If so, did you bench bleed the master before installation

Posted on Oct 02, 2009

  • Lou Everett Dec 13, 2011

    I have a 2006 Trailblazer and it's had 5 master cylinders in 4 years. Chevrolet was nasty with me about it. Any ideas here?


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Related Questions:

1 Answer

Spongy break

The brake system was not bled properly, so you still have air in the lines. The air compresses when you press the brake pedal, making it feel spongy. With no air in the system, the brake fluid does not compress, giving a firm feel.

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if you didn't bleed master before bleeding whole system you may still have air in system, in which order did you the bleed brakes?

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1997 GMC safari van brakes do not operate correctly when pushed. They did not stop the van until the brake pedal was pushed numerous times.


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I am replacing the front brakes, rotors and calipers on a 2003 Olds Alero 3.4 V6. I've bled the lines until it went into cardiac arrest! I've disassembled twice and bled out the calipers, yet the...

Spongy brakes could either a piston leak which would be visible or the master cylinder which you may not be able to notice. I would say the latter is more probable as the fluid can pass through inside the master without leaking. Usually you can purchase kits for them although some models are sealed units. The squeaking you are hearing could be the wear indicators but I am assuming you put new pads in. If not then I would advise you do. If you have then check there is clearance between the wear indicaters and the disc you can bend them out if required.

Aug 15, 2011 | Oldsmobile Alero Cars & Trucks

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My kid bought a 99 Grand Am, the brakes were spongy and had to be pumped. The car now has new front calipers, pads, and new master cylinder. We bench bled the master cylinder and bled out the brakes. The...

If the car has Drum style rear brakes, make sure the adjustment is good. It takes a lot of fluid to activate them.
PS. I assume you did bleed the rears.

Apr 12, 2011 | Pontiac Grand Am Cars & Trucks

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My 97 Chevy Blazer has spongy brakes. Master cylinder was replaced and brake booster was replaced. Braked lines were bled and brakes are still spongy. Can anyone help?

you must have air trapped in the system still, dont drive this car until this problem is fixed, please, for safety reasons. if you dont know how to bleed the brakes have a professional do the work. the fluid might have been contaminated and should be totally reserviced, DOT 3 fluid or better.
can you rate this!

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If the brake lines and fluid is clear then you may have to look at the brake booster found at the other end of the brake pedal under the hood...

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Changed caliper on 2005 ford freestar and now brakes are spongie.

Use a vacuum pump brake bleeder starting at the furthest point from the master cylinder. They cost abt $35. Be sure to keep master cylinder full... :)

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