Question about 2004 Chevrolet Suburban

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Power Steering and Power Brakes

My wife's 2004 Suburban had the Power Steering and the Power Brakes not working this AM. Any idea?

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Ck power steering fluid level,,u may have hydro boost leak

Posted on Jan 31, 2010

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Posted on Jan 02, 2017

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I have a 02 suburban my powere brakes and steering just stopped working is there a fuse or relay for this and where is it located? Thanks


Your suburban uses power steering pressure for your brake assist. This system is called "hydroboost". There is a problem with either your power steering pump or lines.

Feb 26, 2017 | Cars & Trucks

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My suburban power steering belt popped is it ok to drive it


Sometimes your power steering pump operates your power brakes so be aware your brakes may not work properly. It will be VERY hard to steer so just drive it to be repaired ASAP.

Apr 15, 2014 | Cars & Trucks

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Brakes had power steering fluid


Power steering should still work fine. I would say there is still air in the line, or it is bypassing inside the master cylinder.

May 12, 2013 | 2001 Oldsmobile Alero

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I have a 1990 Chevy Suburban v1500. All lights work except for the Brake Lights and Turn Signals. The Blinker switch on steering column is broken, other than that everything is fine.


Yes, the brake light signal on American cars is routed through the turn signal switch. A new switch should restore both your turns and your brake lights.
American cars use the same bulb filament and same wire to the rears for both brakes and turns. Press the brakes when turning and both rear brakes will light, but since one side travels through the flasher relay, that side will blink, while the other side has a steady light.

Apr 06, 2013 | 1990 Chevrolet Suburban

2 Answers

I have hardly any brakes and no power steering. Any ideas?


THE POWER STEERING PUMP ON MOST OF THE LIGHT TRUCKS ANY MORE ALSO RUN THE POWER BRAKES, CHECK TO SEE IF YOU HAVE POWER STEERING LINES GOING TO AND COMING FROM THE BACK OF THE MASTER CYLINDER AREA. THATS THE HYDROBOOST ACTUATOR. REPLACE THE P/S PUMP AND FLUSH ALL THE LINES

Dec 27, 2010 | 2004 Hummer H2

1 Answer

Power steering and brakes quit working on 98 suburban 6.5 diesel


  1. diesel uses what they refer to as hydro-boost to create pwr brake boost
  2. if the p/s and p/ brakes both go out at same time
  3. check p/s belt
  4. fluid level in pwr steering pump
  5. have any repairs been done recently to p/s hoses?

Aug 19, 2010 | 1998 Chevrolet Suburban

1 Answer

Steering and brake power assist dont seem to be working - checked fuses and fluid level - ok - what next?


Your power streering works with a hydaulic pump driven by the engine belt, check the belt and pump.
Your power brakes works using engine vacuum, check for vaccum leaks from tubes that come form the engine intake plenum.

Dec 27, 2009 | 2004 Chevrolet Suburban

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1996 GMC Suburban Brake and Power Steering Failure


if you got the hydro brake boost system .check your power steering pump hoses for leaks .check master cylinder is leaking. fill power steering pump and master cylinder with fluid. the one that is the lowest that the one leaking. if your hydro boost brake unit is leaking .replace it .if power steering pump leaking. it not the hoses replace it . because if power steering goes out brakes will also go out.

Apr 29, 2009 | 1996 GMC Suburban

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