Question about 1989 Chevrolet Corvette

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1989 Corvette braking diagram

Was driving last night and went to apply brakes going downhill and brake pedal went to floor. It held, then lost all firmness and I had no brakes. Thank goodness for downshifting. Need a diagram to figure out where to start looking. Have replaced brake booster 4 times due to bad part, but this didn't have the same symptoms, i.e., loss of vacuum.

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Posted on Jan 02, 2017

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j_del
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SOURCE: My car had all the

Sounds like a master cylinder failure. Were you able to pump the brakes and build up pressure? If so, it sounds like an internal leak in the master cylinder, perhaps in the diaphragm inside. If that diaphragm allows fluid past it (through a pinhole, say), pushing the pedal will allow the plunger inside the MC to push straight in without actually moving the fluid through the lines, out to the brakes.

Posted on Jul 29, 2008

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SOURCE: Brakes no longer work in 1989 Chevy half ton pickup 2 wheel drive 350cubic inch

change dump valve under master cylinder

Posted on Aug 17, 2008

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SOURCE: brake pedal goes to floor

there is still air in your hydraulic lines somewhere bleed the system with a pressurised power bleeder and you will get instant results

Posted on May 01, 2009

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SOURCE: 97 Chevy Silverado Brake Problem

start bleding again from left to rigt all the way around.

Posted on Oct 09, 2009

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SOURCE: my 94 c1500 has very

You still have air in the system. You will have to bleed more. I had to bleed a quart of brake fluid out of each wheel to get good brakes on my 1996 GMC.

Posted on Jul 29, 2010

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