| 7/20/2014 6:43:17 PM |
Brake failure |
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luckylouie42
Cedar Grove, WV
75, joined Mar. 2008
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i have a 2001 chev 4x4 truck, 4 wheel disk brakes, shoved the brake pretty hard, felt something give, all of the sudden, the brake pedal went to the floor, checked brake fluid , still full, no visible brake fluid on on any of the wheels, wondering what is going on. ???
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| 7/20/2014 9:14:41 PM |
Brake failure |
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karrpilot
Oswego, IL
54, joined Jul. 2009
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If the pedal went to the floor, and you are certain there is no fluid leak and or loss, that pretty much leaves the master cylinder as the culprit.
However, in rare circumstances, I have run into ABS units doing the very same things. Electrically passing the tests, and never setting the ABS light on. But mechanically stuck, and bypassing the fluid back into the master cylinder.
This is a job best left to a good repair shop, because with either part, there will need to be what is called an ABS system bleed procedure done. With a good scan tool.
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| 7/20/2014 11:58:05 PM |
Brake failure |
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vanir
Victoria
Australia
48, joined Mar. 2008
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yeah sounds like either popped the master cylinder seals or the caliper pistons to me but I'm not very familiar with the ABS system so could be there too. When pads and discs are worn to death you can pop caliper pistons but if they haven't been grinding and are fairly good condition then I'd look at the master cylinder.
I get an occasional spongey pedal but I know my rear discs and pads need changing.
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| 7/21/2014 9:04:14 AM |
Brake failure |
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luckylouie42
Cedar Grove, WV
75, joined Mar. 2008
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thanks for diagnosis; I have decided to have it towed to chevy garage for repairs. who knows how much both will cost. lol $$$$$$$
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| 7/23/2014 9:51:55 AM |
Brake failure |
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luckylouie42
Cedar Grove, WV
75, joined Mar. 2008
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brake line blowed in bundle, all brake lines in terrible condition, will have to replace them all 
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| 7/23/2014 7:50:48 PM |
Brake failure |
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vanir
Victoria
Australia
48, joined Mar. 2008
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ah it was the lines, were they leaking up back in the undercarriage where you couldn't see it easily I guess?
it is a closed system except for the abs, so it had to let go somewhere.
ABS is tricky though, it was a good call to look there for a loss in pressure...but not that much I should think. Not all the way to the floor without a leak being obvious in the engine bay.
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| 7/23/2014 9:23:59 PM |
Brake failure |
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luckylouie42
Cedar Grove, WV
75, joined Mar. 2008
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actually the line was blown near the back of the drivers door. don't know too much about it, just know the pedal went to the floor, and every time I pushed it, it went to floor,
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| 7/23/2014 11:07:42 PM |
Brake failure |
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mierze6140
Middletown, CT
34, joined Mar. 2008
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9 out of 10 it's on the left side, above the fuel tank.
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| 7/24/2014 7:44:10 AM |
Brake failure |
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karrpilot
Oswego, IL
54, joined Jul. 2009
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That area is where all the brake lines come together into the ABS block. It is an ugly repair to do. We just did one last year on the same year truck as yours.
We had to take out all the body bolts on the drivers side of the truck, and raise the body off the frame between 4-6 inches to access the brake lines. Marked every one, took multiple pictures, so that we didn't cross any lines putting it all back.
Can't remember if we also dropped out the fuel tank, but that does sound familiar. Of course, after going through that ordeal, we replaced the standard brake lines with stainless steel ones.
This repair isn't going to be cheap. 
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| 7/24/2014 8:38:31 AM |
Brake failure |
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1irving
Ruskin, FL
57, joined Mar. 2013
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9 out of 10 it's on the left side, above the fuel tank.
How true. Too bad they put the ABS unit under the driver's door, what a mess removing rotted lines there. I'm sorry for your loss of $700.
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| 7/24/2014 10:03:39 AM |
Brake failure |
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luckylouie42
Cedar Grove, WV
75, joined Mar. 2008
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hmmm, more than 700 dollars.
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| 7/24/2014 11:11:29 AM |
Brake failure |
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karrpilot
Oswego, IL
54, joined Jul. 2009
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Sounds about right for your area. It would probably be more here in the Chicago zone. Got to love that road salt and calcium chloride every winter, eh?
That stuff took out my p/s lines 2 years ago, and the a/c lines in my father's truck this year.
One has to be very careful in making these repairs. You just touch something else close by in the general vicinity, and it might also let loose at the same time.
I guess this is another way for them to get us out of the service department, and into the showroom instead.
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| 7/30/2014 12:59:11 PM |
Brake failure |
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1irving
Ruskin, FL
57, joined Mar. 2013
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I coat my brake and fuel lines with lithium grease when I first get the vehicle.
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| 12/23/2014 11:00:09 PM |
Brake failure |
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up2youandme
Chandler, AZ
42, joined Jan. 2014
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I thought you said there were no leaks anywhere ? How could you blow multiple lines and not spill ?
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| 12/24/2014 7:52:19 AM |
Brake failure |
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dzljim
Strykersville, NY
53, joined Nov. 2014
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Copper Nickel, so much nicer to work with than stainless, and only 12 cents more.
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| 12/24/2014 8:15:30 AM |
Brake failure |
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luckylouie42
Cedar Grove, WV
75, joined Mar. 2008
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brake lines replaced, problem solved. 
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| 1/4/2015 2:06:52 PM |
Brake failure |
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hotdog_bunz
QeysarAngus, Scotland
United Kingdom
51, joined Dec. 2014
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