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Anonymous
Anonymous Posted on Mar 02, 2011
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NO POWER STEERING AND NO BRAKES WE CHANGED P/S PUMP AND THE HYDRO BOOST NOW WHAT

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  • Posted on Mar 02, 2011
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There could possibly be an internal leak in the steering gear causing a low-pressure condition. If there was damage to the system that caused debris to go through the system, it usually requires a complete overhaul or replacement of all components to get all of the debris out of the system. If there was debris in the system and the hydroboost and pump were changed without getting it all out, (i.e. debris still in the steering gear) it is possible that the new hydroboost and pump are now damaged.

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  • Master 4,044 Answers
  • Posted on Mar 02, 2011
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The brakes and the Power Steering are two different systems and two different problems. The brake problem is going to be a caliper or master cylinder issue which maybe a Vacuum issue if the Power Booster hose is leaking or disconnected from the master cylinder. The power steering is going to be low fluid in the power steering pump, faulty power steering pump (Obvious if you were hearing a whine that got louder as you turned the wheels, or the Power assist piston that connects to the tie rods.

  • Anonymous Sep 05, 2011

    On a diesel with hydroboost, the power steering pump runs the brake booster, too. So there are not two different systems.

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  • Posted on Mar 12, 2011
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Press brake pedal.pully stop sterring wheel

  • Anonymous Mar 12, 2011

    press tha pedal.pully stop sterring whell

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Related Questions:

0helpful
1answer

Can someone tell me if the hydro boost could
Depends on the car and the problem.
The hydro-boost gets pressure from the power steering pump on some models, so the pump could affect the hydro-boost but usually not the other way around. You could disconnect the hydro-boost lines and the power steering should still work.
Read full answer
Sep 19, 2014 • Cars & Trucks
0helpful
1answer

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
Read full answer
Jul 23, 2017 • 2001 Chevrolet Silverado 2500HD
3helpful
2answers

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
Read full answer
May 02, 2011 • 2004 GMC Sierra 2500
2helpful
1answer

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.
Read full answer
Oct 24, 2010 • 2005 Chevrolet Silverado
1helpful
1answer

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.
Read full answer
Feb 18, 2010 • 2000 Chevrolet 3500
0helpful
1answer

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.
Read full answer
Feb 09, 2010 • 2001 Chevrolet Silverado 2500HD
0helpful
1answer

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.
Read full answer
Jan 30, 2010 • 2000 Chevrolet Silverado 2500
1helpful
1answer

2000 2500 Silverado 6.0 no power steering or power brakes.
It sounds like you lost the power steering pump or belt. The brakes utilize pressure from the power steering pump via the hydro-boost. If it is the pump, and the belt is still intact, you will probably want to replace the belt as well.
Read full answer
Jun 06, 2009 • 1999 Chevrolet Silverado 1500
2helpful
2answers

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.
Read full answer
Mar 26, 2009 • 2005 Hummer H2
0helpful
1answer

2001 chevy sylverado 2500hd power steering and power brakes quit
check power steering fluid. first. if all good . power steering is going. your hydro boost brake system depends on the power steering pump if it goes out your brake go out.
Read full answer
Jan 12, 2009 • 2001 Chevrolet Silverado 1500
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