Question about 2001 Chevrolet Silverado 3500

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No brakes Broke power steering pump. Replaced it. Thor it was hydro boost at first so had already replaced but still no brakes so put another new hydro boost on and didn't fix. Put new master cylinder on and brake pedal goes to floor still?

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6ya6ya
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Posted on Jan 02, 2017

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Benimur
  • 6966 Answers

SOURCE: hydro boost

Hi,

Appreciate the "Ask Me" and my compliments, scary driving one of those in our roads.

Might you have to check the Brake Booster. Normally, there would be a vacuum line to the booster from the intake manifold. Common design calls for a PCV type valve at the entrance to the booster. Pls check this. It also operates on the same principle and therefore checks the same, you can blow one way but not the other; would have a sliding ball inside that acts as the valve. In some instances, it could be the diaphragm inside that might have a tear.

Of course, the Proportioning valve system must likewise be checked. I have heard a lot of brake problems with K2500 especially the rear drum.

Incidentally, there was a recall order of some sort. TSB 99-05-24-001A SEP 99 which addressed brake pull/wear, the recall involved replacing the proportioning valve.

  • The Technical Service Bulletin referenced previously discusses the issue surrounding the proportioning valve. Also, there's a corrosion issue which has resulted in the recall of the trucks in certain states.
Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards. Thank you for using FixYa.

Posted on Aug 10, 2008

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  • 10 Answers

SOURCE: brakes

I ran into the same difficulty and found myself looking in the same places. With rare exception, if the master cylinder and booster are not leaking, look else ware. Aged front disk calipers caused my difficulty. They can bind due to the daily heat generated from breaking. My wife is either on the gas or the breaks and I'm always battling warped rotors, cooked shoes, and the constant drone "the breaks are funny". A good check is to push the pistons back into the caliper casting. If you feel you're forcing them, they should be replaced. Calipers deteriorate and are not a lifetime item. I got my last set from Advanced Auto for $15 each w/ lifetime guarantee (rebuilt). Two bolts, carefully disconnect the break line and don't over tighten, get a helpful son or good friend with a six-pack to push the petal for bleeding and you should be good to go.

Posted on Oct 07, 2008

SOURCE: 94 S-10 Chev Brake problem

This is an easy fix un plug the abs sensor from spindle abs light will come on but the brakes will work only abs will not

Posted on Nov 24, 2008

  • 6982 Answers

SOURCE: 1973 F250 TRUCK 4X4 BRAKE PEDAL GOING TO THE FLOOR

Master is internally bypassing : replace or rebuild.

Posted on Feb 20, 2009

emissionwiz
  • 76164 Answers

SOURCE: brake pedal dropping to floor

do u have the antilock brake bleeding tool? if not you will need to have the dealer bleed the brakes, the ABS control valve must be electricaly held open to bleed the brakes there of course is a special tool for this.

Posted on Oct 18, 2009

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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:

. Hydro Boost Power Assist Systems Operation Diagnosis and Repair

Jul 23, 2017 | 2001 Chevrolet Silverado 2500HD

1 Answer

2001 chevy tahoe vacum hoeses for power steering


Hello! There are power steering fluid in/out hoses but no vacuum lines...It sounds as if the pump needs to be bled of air or the belt is loose...Belt should move about 1/2 to 3/4"...Bleeding is as follows...
Guru...saailer

    ImportantPower steering fluid level must be maintained throughout bleed procedure.
  1. Fill pump reservoir with fluid to minimum system level, FULL COLD level, or middle of hash mark on cap stick fluid level indicator.
  2. ImportantWith hydro-boost only, the oil level will appear falsely high if the hydro-boost accumulator is not fully charged. Do not apply the brake pedal with the engine OFF. This will discharge the hydro-boost accumulator.
  3. If equipped with hydro-boost, fully charge the hydro-boost accumulator using the following procedure:
  4. 2.1. Start the engine.2.2. Firmly apply the brake pedal 10-15 times.2.3. Turn the engine OFF.
  5. Raise the vehicle until the front wheels are off the ground. Refer to Lifting and Jacking the Vehicle in General Information.
  6. Key on engine OFF, turn the steering wheel from stop to stop 12 times.
  7. Vehicles equipped with hydro-boost systems or longer length power steering hoses may require turns up to 15 to 20 stop to stops.
  8. Verify power steering fluid level per operating specification. Refer to Checking and Adding Power Steering Fluid .
  9. Start the engine. Rotate steering wheel from left to right. Check for sign of cavitation or fluid aeration (pump noise/whining).
  10. Verify the fluid level. Repeat the bleed procedure if necessary.

May 03, 2012 | 2001 Chevrolet Tahoe

2 Answers

What causes the brakes and power steering to go out at the same time?


Are you a diesel? If you are do the recall ,for the hydro boost (brakes) you sound like it.There is a recall on the hydro boost and yes this is a power steering assist, and a brake power assist
Recall I.D # 04045000

May 02, 2011 | 2004 GMC Sierra 2500

1 Answer

My brakes and power-steering are not working. The brake pedal is hard, but the brakes will not engage. The power steering was not working at the same time. It has brake fluid, but when I took the power...


Yes, your brakes are boosted by the power steering pump rather than by vacuum. I don't think it's air in the system. More likely your pump has failed, but you can try bleeding the pump. Here is a procedure from autozone.com:

Observe the following:
Use clean, new power steering fluid type only Hoses touching the frame, body or engine may cause system noise. Verify that the hoses do not touch any other part of the vehicle. Loose connections may not leak, but could allow air into the steering system. Verify that all hose connections are tight.


NOTE Power steering fluid level must be maintained throughout bleed procedure.

  1. Fill pump reservoir with fluid to minimum system level, FULL COLD level, or middle of hash mark on cap stick fluid level indicator.
    NOTE With hydro-boost only, the oil level will appear falsely high if the hydro-boost accumulator is not fully charged. Do not apply the brake pedal with the engine OFF . This will discharge the hydro-boost accumulator.
  2. If equipped with hydro-boost, fully charge the hydro-boost accumulator using the following procedure:
    1. Start the engine.
    2. Firmly apply the brake pedal 10-15 times.
    3. Turn the engine OFF

  3. Raise the vehicle until the front wheels are off the ground.
  4. With key in the ON position and the engine OFF , turn the steering wheel from stop to stop 12 times. Vehicles equipped with hydro-boost systems or longer length power steering hoses may require turns up to 15 to 20 stop to stops.
  5. Verify power steering fluid level per operating specification.
  6. Start the engine. Rotate steering wheel from left to right. Check for sign of cavitation or fluid aeration (pump noise/whining).
  7. Verify the fluid level. Repeat the bleed procedure if necessary.

Observe the following:



Use clean, new power steering fluid type only Hoses touching the frame, body or engine may cause system noise. Verify that the hoses do not touch any other part of the vehicle. Loose connections may not leak, but could allow air into the steering system. Verify that all hose connections are tight.
NOTE Power steering fluid level must be maintained throughout bleed procedure.
  1. Fill pump reservoir with fluid to minimum system level, FULL COLD level, or middle of hash mark on cap stick fluid level indicator.
    NOTE With hydro-boost only, the oil level will appear falsely high if the hydro-boost accumulator is not fully charged. Do not apply the brake pedal with the engine OFF . This will discharge the hydro-boost accumulator.
  2. If equipped with hydro-boost, fully charge the hydro-boost accumulator using the following procedure:
    1. Start the engine.
    2. Firmly apply the brake pedal 10-15 times.
    3. Turn the engine OFF

  3. Raise the vehicle until the front wheels are off the ground.
  4. With key in the ON position and the engine OFF , turn the steering wheel from stop to stop 12 times. Vehicles equipped with hydro-boost systems or longer length power steering hoses may require turns up to 15 to 20 stop to stops.
  5. Verify power steering fluid level per operating specification.
  6. Start the engine. Rotate steering wheel from left to right. Check for sign of cavitation or fluid aeration (pump noise/whining).
  7. Verify the fluid level. Repeat the bleed procedure if necessary.

Oct 24, 2010 | 2005 Chevrolet Silverado

1 Answer

Two power stearing pumps broke replacing the third now one lasted 1yr other one lasted 3 month both shaft broke why what about hydro boost


theres a mojor problem with these pumps, the shaft fractures it was a defect build call your dealer theres a revised pump to replace these and may be under warranty. they are also paying customer back for repairs.hydro boost also uses a power steering pump, the diffrence is theres no vaccum booster in hydro boost the brakes are power with the power steering pump, next thing is try useing a dealer part and make sure the pulleys are all lined up and replace the pulley on the pump also. hope this helps.

Feb 18, 2010 | 2000 Chevrolet 3500

1 Answer

Loss of brakes and steering


sounds like you've got a bad power steering pump. i'm not familiar with your vehicle, but some brake boosters run off vacume from the engine and others run off the power steering pump and it's called hydro boost. if you have the hydro boost type, this is most likely your issue.

Feb 09, 2010 | 2001 Chevrolet Silverado 2500HD

1 Answer

I replaced the hydro boost on my 2000 2500 silverado because the original one was leaking.since then the brakes seem to have no power or boost.i purchased the reman. from o'reileys.do you think the reman...


It could be defective it just gets install make sure you have enough power steering fluid at the power steering pump, I have tow trucks with hydro boosters and they just get install and that's it. return it and get another one.Hope this was very helpful.

Jan 30, 2010 | 2000 Chevrolet Silverado 2500

1 Answer

Power steering box and pump


Try a different grade of oil.Sounds like the oil is the wrong grade.

Jun 07, 2009 | 2002 Oldsmobile Intrigue

2 Answers

Power steering went out along w/brakes


Does it have a hydroboost brake booster? Is the belt still on the p/s pump? Have you checked the power steering fluid level? If yes and good to all, replace the Power steering Pump.

Mar 26, 2009 | 2005 Hummer H2

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