Question about 1998 GMC Blazer

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Brakes are gone

One morning with no warning the brake pedal goes to the floorboard with no resistance at all. Brake fluid was low so I added some - no effect. I replaced the brake master cylinder, again no effect - pedal still just goes to the floor. What now?

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  • its420_us May 11, 2010

    Did you bleed the brake system?



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Check ur brake lines for posible leaks. also make sure to bleed your brakes after you put fluid into it or else the air won't come out of the brake lines causing ur pedal to still go to the floor

Posted on May 27, 2009

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  • GMC Master
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Look under vehicle and see if any fluid is in backside of whhel

The vacuum booster may be drawing in the beale fuid through a bad seal within.. Old master cylinder should have show leakage at mointing to assist .. After failure of the sort thebrakes may need to be blrf

Posted on May 27, 2009


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1 Answer

Brake pedal went straight to the floor without resistance

Low or empty brake fluid . No red brake light lite . Brake line corroded maybe , where do you live ? Rust belt USA . Just had a similar problem in a 2005 chevy cavalier . Did you have to stop really fast ?

May 09, 2017 | 2003 Chevrolet Cavalier

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Brakes going to the floor will not stop master cylinder full no leaks around car what could this be

Sound like you have a Master Cylinder failure, you brake fluid is full, and no pedal resistance, if the brakes feel spongy then you may just need to have your brakes bleed, and got air in you brake lines, if you found that your brake resivoir tank low and added some recently, then maybe it pulled air into your lines. Good luck. Rick.

Aug 06, 2011 | 2000 Lexus Gs 300

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Parking brake warning light comes on and chimes, then goes off and after 10 minutes it comes on again and chimes. The brake works, and the brake pedal returns to the off position. Yet light will come on...

This is caused by low brake fluid, check the brake fluid in the master cylinder, its low and as it moves around it turns light on, as the brakes wear the calipers open and take in more fluid so the resivoir gets low, this would not affect the brakes but have them checked to make sure there not to low or at your next service have them check the brakes and just add fluid for now, hope this is helpful, good luck.

Jan 08, 2011 | 2000 Dodge Caravan

1 Answer

My brake lights stay on after I turn off the car


If the light is on all the time, it could mean you simply forgot to release the
parking (emergency) brake. The brake warning light remains on when the brake is set
as a reminder. If the brake warning light remains on when the parking brake is
released, then something is amiss.

In some cases, the brake warning light may remain on if the switch on the parking
brake pedal or lever is misadjusted. Nothing is wrong with the brakes and a simple
adjustment should fix the problem.

If the brake warning light comes on when you apply the brakes,
or is on continuously, it means that hydraulic pressure has been lost in one side
of the brake system or that the fluid level in the master cylinder is dangerously
low (due to a leak somewhere in the brake system).
In either case, the fluid level in the master cylinder should be checked.
Adding brake fluid to the master cylinder reservoir may temporarily solve the
problem. But if there's a leak, the new fluid will soon be lost and the warning
light will come back on.

Brake fluid leaks are serious because they may cause the brakes to fail!
So avoid driving the vehicle until the system can be inspected to determine what's
wrong. Leaks can occur in brake hoses, brake lines, disc brake calipers,
drum brake wheel cylinders or the master cylinder itself.
Wet spots at hose or line connections would indicate a leak that needs to be fixed.

Leaking brake fluid can also contaminate the brake linings,
causing them to slip or grab. The uneven braking action that results may cause the
vehicle to veer to one side when the brakes are applied. Brake shoes or pads that
have been contaminated with brake fluid cannot be dried out and must be replaced.

Hope this helps.

Dec 17, 2010 | 2001 Volvo S80

2 Answers

My brake light did not warn me that i needed brakes

someone probably topped off your brake fluid when your brakes were low. the only way i know is to have new front and back brakes then make sure the brake fluid level is right . the light only comes on if your brake fluid goes low so the system has too much fluid if it says full and your brakes are not new front and back

Dec 16, 2010 | 2005 Mercury Mountaineer

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System has a fault and needs troubleshooting.

Aug 27, 2010 | 2003 Ford Expedition

2 Answers

Brake warning indicator lamp is on, brake pedal

Check for leaks under the car. Look carefully at the back of each wheel for dampness or wet areas that would identify where the leak is. If there is nothing evident, no spots on the ground where you park, etc, check under the dash where the master cylinder is attached to the firewall (INSIDE the car, not under the hood). Again, check for any evidence of leakage. If the master cylinder leaks, it can usually only be confirmed by looking under the dash, and because of the location, usually goes unnoticed. The fluid level may have gone down low enough to allow air into the system, which is causing the low pedal. Check this out asap, as this is too dangerous to drive. In an emergency situation, a panic stop wouldn't give you time to pump the brakes to stop.

Mar 25, 2010 | 2001 Ford Taurus

1 Answer

Brake light warning light stays on only in cold weather.1997 toyato camry

check your brake fluid, if fluid is low light will come on. the only other time is if the brake pedal looses preasure and then the pedal would be low, also you may what to have brakes checked, when fluid goes low it also means brakes may be low, hope this is helpful.

Dec 19, 2009 | 1997 Toyota Camry

1 Answer

T brakes after driving on a donut pare

I believe driving on the donut spare has nothing to do with the problem-it isn't all wheel drive option is it? You say you added brake fluid, how low was the level? If it is losing fluid, you might have a rusted brake line that is leaking. Any evidence of a leak under the van? It's possible the master brake cylinder is bad, but this seems to be a sudden start of the problem. Did the tire blow out or did you go out to find it flat in the morning? I believe this is a leaking brake line issue. It is possible that if the tire blew out while driving, or you hit something (like debris) in the road, it may have damaged a brake line. As I mentioned earlier, it could just be a rusted leaking brake line. If brake fluid leaked on the exhaust or any hot components, it would give off a 'chemical' smell ( or even have an odor if it just leaked out) Let me know what you find.

Nov 30, 2009 | 1995 Dodge Caravan

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