Question about 1997 Chevrolet C/K 2500

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Brakes wont hold

My 1997 chevrolet 2500 pickup has been out of commission for about 1 year. I finally repaired some items on it and now my brakes won't hold. I replaced the master cylinder, it seemed like that fixed the problem until I cranked it up, the brake pedal went to the floor. Then someone told me I had to replace the brake booster. The same thing after I replaced it, you think you have good brake until you crank the engine the pedal goes to the floor. Yes, I have bled the lines still no change. Someone help me!

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Check all your lines make sure that they are tight also check you calipers and make sure that the seals are good and you are not leaking fluid anywhere. When brakes go to the floor means you have air in the lines still

Posted on Feb 12, 2009

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Posted on Jan 02, 2017

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2001 Silverado 2500 HD Why Rear brakes don't work after I installed new hydro-boost power booster, master cylinder, calipers, and pads. I bled master cylinder before installing, and brakes beginn


Hello Patricia,

Have you checked the master brake cylinder reservoir for brake fluid loss?

I don't suspect the master cylinder as you have replaced it... but am more suspect of a leaking brake line or fitting which should have
been discovered when you had the system bled.

The only time I ever had a rear brake problem with a 2500 series Chevrolet was due to seized rear brake caliper guide pins...as your calipers are also new that is not your problem.

If your brake pedal feels spongy and travels to the floor board you have air in the system, a brake fluid leak or a failure in the power steering system, such as a broken hose, broken power steering pump drive belt, or failed pump, would result in a loss of pressure to both the hydro-boost and steering.

Find more information here:

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