Question about 1996 Chevrolet Suburban

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Brake pedal needs to be depressed very hard to stop,pedal is mushy,pads and shoes have been replaced, rear wheel cylinders have been replaced.calipers have been replaced, front brake lines have been replaced,master cylinder has been replaced,brakes have been bled till they run totally clear. seems like front brakes will lock up on snow and ice and skid this is a 1996 suburban k1500 with 112,000 miles,I`m completely stumped what am i missing?

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  • Master
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The pedal goes down a long way(Rear brake shoes out of adjustment) or the pedal is hard to push and you have to about use two feet to stop the truck? (booster problem)

Posted on Jul 18, 2010

Testimonial: "rear brake shoes are adjusted tightly, pedal is not hard to depress at all,pedal does goes down further than it normally used to."

  • Clint Smock
    Clint Smock Jul 21, 2010

    You said you can lock up the front brakes. So if it has 4 wheel ABS you have an ABS problem. Do you know if it has 4 wheel ABS or just rear wheel ABS. To tell look and see if it has speed sensor on the front wheels.

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  • Master
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Does this have abs?One thing i have found that corrects this if it has abs is too drive somewhere where you can safely force the abs to activate someplace that has alot of room and loose road material such as gravel or loose dirt. I usually do about 15-20mph and slam on the brakes making the abs activate. Do this a few times and you should notice a difference.

Posted on Jul 18, 2010

  • Jonathan S
    Jonathan S Jul 18, 2010

    I agree with smock if the pedal is super hard the booster is having issues. I would definitely try my suggestion as well if your vehicle has abs. It forces the valves to open up where as normal braking does not.

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1 Answer

Brake peddle is low,


Pedal, not peddle. First make sure reservoir is full at the brake master cylinder. Then check your brake pads (for disc brakes) and/or brake shoes (for drum brakes). When the pads or shoes are very worn down, you will get a low pedal. If you have disc brakes on the front and drums on the rear wheels, first try just replacing the front brake pads. If you get a good pedal after the front is done, many people tend to let the rear brake shoes go unless they are making noise. These systems are designed to put most of the braking force on the front discs, so the rear shoes do not need changing as often.

May 11, 2017 | Cars & Trucks

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Replaced some brake line, rear pads and one rear wheel cylinder. Now no pressure and nothing happening when trying to bleed.


Does the car have ABS ? And does it have an equalizer block for the 4 wheels ?
It sounds like the ABS has been affected, or there is an equalizer block that is stuck on the front wheels only.
Can you open the bleeder or the rear line on the master cyl and get fluid to come out by depressing the pedal ?

Jul 07, 2013 | 1997 Mercury Tracer

1 Answer

I put new brakes in my saturn. i put new front calipers,rotors and pads and power bleed front only. i also put new brake pads in rear but did not replace drums.after all that i can't get a hard brake...


try adjusting the rear brake shoes but.....spin the rear wheels first is u get the feeling of the shoes grabbing then releasing ( the tire gets loose then tight as u rotate it) u will need to have the drums cut on a brake lathe or replaced...when u have this done , then adjust the rear shoes until u get a slight drag on the rear wheels..go pump the brake pedal to seat the shoes if the wheel spins free adjust the shoes more an repeat until they have a slight drag after pumping the brake pedal

Jul 16, 2011 | 1999 Saturn SL

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Brake pedal is mushy all the way to the floor. Have already replaced front calipers, master cylinder, and bled all the brakes. Pedal still goes all the way to the floor when stopping the car.


If the car has drum brakes in the rear, Jack the rear up and have someone push the brake pedal hard and you try to turn the wheel. If you can turn it you need to adjust the rear shoes. They may be traveling out so far that the fluid level drops causing the pedal to go to the floor. You must adjust them with the drum on till you hear and feel the shoes rubbing against the drum. Hope this helps.

Dec 30, 2010 | Honda Accord Cars & Trucks

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How can i tell if master cylinder on my 91 buick park ave is done the break pedal goa all the way down as soon as i turn car on. o not see any fluid leaks. car stops if you pump breaks but slowly?


Most likely you need brake job on front and rear. to test if the pads are worn on the rear set the emergency brake then push down on the brake. does it come up? if it does This means the rear pads are bad and most likely the front. You will want to check the master cylinder for fluid if it is low you will have to replace with DOT3 Fluid once it is full you may have to bleed the system to see if the brakes come up. If the fluid is ok and The pads are not wore out then you will have to check the master cylinder to do this you need to jack up the car one wheel at a time and test by pressing brake pedal down slowly till the wheel will not turn. If the wheels stop on all four wheels when you have done this test then you will need to replace the pads and shoes. If the master cylinder is defective either the front wheels won't stop or the rear won't stop turning when you press the pedal down. The Master cylinder is $39.00 with exchange, but you want to make sure the pads are good the rear shoes are good and the brakes are adjusted. Here is the web page for the parts you need. If you need help doing a brake job let me know and I will give you whatever information you would need to do the job with. You can test the master cylinder if you have rubber gloves too, just pop the lid off the master cylinder and have someone slowly push the pedal down with your finger on the front port see it you get fluid blowing out the hole when the pedal is pushed down. If you do the cup is bypassing and it needs to be replaced. Hope this helps.
http://shop.advanceautoparts.com/webapp/wcs/stores/servlet/subcategory_Brake-Hydraulics_-49997377_13557_10151_10051_-1___

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1 Answer

2002 Chevrolet Cavalier the rear brakes lock up when you use them


This is usually caused by a leaking wheel cylinder allowing brake fluid on the brake shoes. The wheel cylinder actuates the brake pads when the brake pedal is depressed and only can be inspected by removing the brake drums.

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1 Answer

Hello. i have a 1991 audi 100. brake padel has become mushy but there are no signs of brake fluid leak on the master cylinder or the lines. the brake pads are new. thanks


Just because there isn't an external leak in the brake system doesn't mean there isn't an internal leak in the master cylinder. A mushy pedal is usually an internal leak in the master cylinder or leaking wheel cylinders in the rear brake drums. Check the rear brake wheel cylinders for fluid leaks, if there are none or you do not have rear drum brakes, your best bet is the master cylinder :)

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97 ford e350 brake pedal goes to the floor...


are your rear drums set up? why did you bleed the brakes. when only when you installed new pads?

Sep 11, 2008 | 2002 Ford E350

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