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2005 GMC Sierra break pedal goes to the floor or first pump then I have breaks

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  • GMC Master
  • 5,742 Answers

Pump 20X should be OK.

Posted on May 04, 2017

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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  • 1 Answer

SOURCE: ABS break system not working properly

Hello sir my system is not working proply. what to do tell me

Posted on Jul 03, 2008

wyatt1582
  • 453 Answers

SOURCE: brakes

Step1
If you had a brake job you might have air in the system that needs bleed out.
Crack open the bleeder on the caliper and watch the brake fuild come out steadly and close it and don't pump the pedal. Do this to each side this is called bench bleeding and watch the brake fulid level while you are doing this add fuild as you bleed each side.


Step2
Also sounds like a leaking line check under the car for a leaking brake line. Next would be a master cylinder problem. But more than likely a brake line might be rusted up and leaking, sooner or later you will not be able to stop. If its a leaking line it will leak all the fuild out of the master cylinder. You can replace the line and use the bleeding procedure in step one.

Posted on Apr 19, 2009

  • 12 Answers

SOURCE: 1994 gmc sierra truck, have no clutch pedal at

Probably blew the rubber diaphram in the clutch master cylinder. Rebuild kits are fairly cheap and easy.

Posted on Jul 07, 2009

litoshop
  • 298 Answers

SOURCE: brake pedal goes down to far abs brakes

Hi I'm litoshop if you bled the system and get no results then your brake pump needs to be replaced now before replacing make sure your pads are installed correctly because if there not this to can cause this problem good luck. if this information has been useful please let us know thank you.

Posted on Aug 11, 2009

  • 1810 Answers

SOURCE: break peadle wont hold pressure

sounds like blow by it hapens when a brake cylinder is starting to fail it also hapens when people ride the brakes and they over heat if car is cold and pedal fades then it's time for a new master cylinder

Posted on Jan 10, 2010

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2 Answers

My brake pedal slowly losing pressure goes to the floor and then I have to pump it up again


If you break fluid level is correct and your break pedal goes down to the floor means that your master cylinder is going bad and you might loose your breaks completely if not checked or replaced. Your breaking system is down to the last O ring inside the master cylinder, once that rubber O rings goes you will not have any breaks at all. Master cylinders have a number of rubber O rings that work like a plunger or piston that produce pressure within the breaking system. When the first one wears down due to age, your pedal begins to loose break pressure and you have to pump your breaks several times to gain breaking. You are now down to the last rubber O ring and a warning that your master cylinder needs to be checked. You can still use your breaks but only for a few days before the other rubber O ring gives out too. Once both O rings give out you completely loose your breaks.

Apr 12, 2015 | Cars & Trucks

2 Answers

Soft brake pedal on 94 gmc sierra


in late model GM and Ford cars with quick take-up master cylinders, the quick take-up valve takes about 15 seconds to reseat after the brake pedal has been depressed, so you should wait at least 20 seconds before you press the pedal while bleeding. If the pedal is pumped too quickly while manually bleeding the system, you may never get the pedal to firm up. On a side note, did you check the level in the master cylinder after every 2 or 3 bleedin procedures? you could have been pumping air right back in the lines if the reservoir runs dry during the bleeding process.

Dec 16, 2013 | Cars & Trucks

1 Answer

Clutch pedal goes to floor. I change the clutch, pressure plate and throw out bearing. Still no clutch pedal. Changed out the cylinder that presses against throw out lever arm and bled it. Still no clutch...


you need to pressure bleed the system, or you can fill the brake system to over fill as it needs to be over the pipe for the clutch line. and keep it there and pump and bleed the line, but before pumping undo the bleed screw and put bowl uner to catch fluwid and fill the line up till it runs out clear with no bubbles. then tighten the bleed screw. then fill up and pump pedal, the re bleed. should be done then, pressure kit doe this all in one just hold clutch down and undo the bleed screw let air out etc then tighten up. and its done. used for doing the breaks as well.

Dec 30, 2017 | 1992 GMC Sierra

1 Answer

When i press the breaks the breaks pedal goes all the way to the floor


you either have a busted break line or your master cylinder needs to be replaced. check around all wheels for fluid leakage , If no fluid seen check to see if the cylinder is full , If mot fill it and pump the breaks and look again for fluid leakage.

Feb 13, 2013 | 2001 Hyundai Santa Fe

1 Answer

How to bleed front brakes?


hello, your going to need a buddy in the truck pumping the brakes while you bleed them. With that first you need to verify that the master cylinder is full, if it is you can get started, there are two ways you can do this, the first is called a non-pressure bleed, this is when you break the bleeder loose and have your assistant push down on the brake pedal and when it is all the way to the floor you tighten the bleeder up before they release the break pedal. The second method is the pressure bleed. this one is a little bit more messy, you will have your assistant pump the brake pedal several times and hold firmly while you break the bleeder loose, the pressure will force the fluid and air out quickly. you will have to bleed both wheels untill there are no more bubbles in the fluid coming out. be sure to keep checking the master cylinder to verify that the brake fluid is full.

May 18, 2010 | 1995 GMC Sierra C1500

3 Answers

Wiring diagram for 1996 gmc sierra brake asembly


The brake light switch is at fault. Get a new one and replace it. The location is at the brake pedal area mounted on a bracket with a plunger stud that rest on the brake pedal's arm the pad is attached to

May 08, 2010 | 1996 GMC Sierra

2 Answers

How do you bleed brakes on a 1999 GMC Sierra with ABS 2wheel drive 1500 series


The rule of thumb is to start as far away from the master cylinder as poss. so it means you start at the right rear, left rear, right front, then at last left front. There is a little a little weep bolt on each calliper it needs to be un lossened when break is fully applyed then tighten weep bolt back up pump the breaks while weep bolt is still tight then hold brake pedal down to floor lossen weep bolt till a full steam of fluid comes out tighten bolt back up, now move on to the next break calliper and repeat this same proccess till you finished. Hope this works better than r/r l/r r/f l/f lol!!!!

Mar 12, 2009 | 1999 GMC Sierra

1 Answer

ABS break system not working properly


Hello sir my system is not working proply. what to do tell me

Jul 02, 2008 | 1992 Chevrolet S-10 Blazer

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