Question about 1995 Chevrolet K1500

3 Answers

Brake Pedal goes to the floor in my 1990 Chevy C1500 Scottsdale

Having the same issue since replacing the main rear brake line (the brake line from the master cylinder to the rear hydraulic block, which branches off to each rear wheel. Last week the pedal hit the floor and I replaced one of the rear brake lines. Then a few days later the same thing happened again, this time the main line to the rear was leaking. Replaced this, and now getting no leaks, but the brakes don't come on until the pedal is basically on the floor.

Bled off the brakes and there's fluid everywhere from front to back at all connections, no air, but my pedal travel is still to the floor before any brakes come on. Also, no leaks anymore, and the master cylinder reservoir is full. Only thing is that about 6 months ago we replaced the master cyl and all was well, but there are 2 dump valves on my truck just underneath this, and one was stuck. any ideas?

Posted by on

  • vjmacintyre Jul 21, 2009

    Hey thanks guys; I'm sure there's no air in the master cylinder or in the lines, but I'll try these procedures as well...

    I also found some more information on my braking system, the RWAL (early type of ABS on the rear wheels only) --> I'm thinking that the problem is a dirty/faulty combination valve (isolation/dump valve are one unit on GM vehicles in those years) -- check out this site:

    Thanks again!



3 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 5 achievements.


    An expert whose answer got voted for 20 times.


    An expert who has answered 20 questions.

  • Expert
  • 113 Answers

Do you have a self bleeder kit? first off, you have to bleed the master cyl back into its self and the combination valve before you go to the wheels. when you do that, I think you will find that you have air in the lines. disconnect both brake lines from the master cyl and put the bleeder kit fittings on the master cyl, then put the rubber tubing with the kit on the fittings and submerge it in the brake reservoir. make sure its full. then pump the pedal until you get a hard pedal. if that is the case, reconnect the lines to the master, then have an assistant pump up the brake pedal with the engine off, and bleed the combination valve which should be connected to the master by steel tubing. pump it up, then hold it down, and crack the fittings loose, one at a time until the pedal goes about half way down, but do not release the brake pedal until the line is tight again, otherwise you will **** air in the lines. after you do all that, go to the farthest caliper or wheel cylynder from the master and bleed that with the same technique,and dont release the pedal until you close the bleeder screw. unless you have a major prob, this will work.

Posted on Jul 20, 2009

  • Level 1:

    An expert who has achieved level 1.


    An expert that has over 10 points.


    An expert whose answer got voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 10 Answers

May I ask you a question?, before you replace the main rear brake line your brakes were working good?, 'cause if your are saying all connections and lines are fine, then you have to start cheking your rear and front brake pads as well as your front calipers and rear wheel cylinder for proper working,last thing you have to check is the brake booster for no air leaks and check it's working good, good luck.

Posted on Jul 20, 2009

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

I have a 1995 chevy c1500 pickup nd the brake pedal gets stuck it has new brakes and everything but it still doesnt work

Posted on May 16, 2013

1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

I replaced disc brake pads, rear shoes. wheel cylinder,master cylinder, power brake booster all new. Question: My brake pedal is not solid,goes low to the floor almost. I have bled the master cylinder 1st,...

Check your lines going to the brakes the rubber hose on the 1993 chevy have a tendancy to crack and brake are you using an excess of brake fluid

Sep 12, 2011 | 1993 Chevrolet C1500

1 Answer

I have a 1989 Chevy pickup 1/2ton and can not get the brakes to work. I bought the truck a year ago and drove it to work and the drivers front brake locked up and cause it to melt the caliper so I replace...

the brake lines leading to the calipers could be broken someplace, i suggest checking all your brake lines including the lines comeing from the rear end

Feb 12, 2011 | 1989 Chevrolet C1500

1 Answer

Can't get rear brakes to bleed on a 4.3l 1990 chevy scottsdale front fine

should check for blockage remove line try to blow air thru it with air hose

Sep 08, 2010 | 1990 Chevrolet C1500

2 Answers

Got a 94' chevy 1500 having brake problems, and replaced the master cylinder and bled the lines. but the pedal is still not working right, the pedal when pushed with the truck running will just go to the...

With he engine running your pedal action is assisted greatly by the brake servo. The servo is a large diaphragm that is acted on by the suction delivered by a vacuum line from the the intake manifold. The fact that the pedal goes to the floor when the engine is running just shows how much assistance the engine suction provides to your foot pressure. It is obvious that you still have air in your system. I would suggest that you top up the master reservoir, start your engine and pump the brakes quickly until you feel some hard back pressure. This will ensure that the brake pistons have been fully extended. Starting with the most remote caliper (right rear) bleed off about half a pint of fluid. Ensure that no air is allowed to **** back in via the bleed nipple at any time. Refill the master reservoir. Next the left rear caliper, bleed off about a quarter of a pint. Refill reservoir. Bleed off a about quarter of pint from both front brakes. This should sort it out.

May 13, 2010 | 1994 Chevrolet C1500

2 Answers

Brake pedal on my 98 chevy s10 is soft

1988 chevy r 3500 1 ton changed out driver front brake caliper
brakes are soft peddle goes to the floor tried to bleed but no brake fluid will come please help

Apr 14, 2010 | 1988 Chevrolet C1500

1 Answer

89 c1500, full pedal on brakes until started then goes to floor. Bled system,replaced master cylinder and anti-lock system,now has better pedal but code 4 on brake lite that won't go out. Have replaced...

adjust your rear shoes up so that the rear drums just turn, with them ajusted to a low setting the brake pedal will be low .
also when you start your engine it is noral for the pedal to drop because of the boster ! [ but not to the floor ]
Bruce Pike

Oct 10, 2009 | 1989 Chevrolet C1500

1 Answer

Rear brakes locked up. 1990 chevy c1500 2wd pickup

did you see if they need replaced?
and also the emergancy cable may be froze

Aug 11, 2009 | 1990 Chevrolet C1500

2 Answers

Spongy brake pedal

I have a 2001 Chevy 1500 4 X 4 that recently had all new pads, rotors, and calipers installed. Since then my brake pedal goes almost to the floor before I get any brakes. I took it back to the shop and they bled the brakes with no better results. I bled them also with no results. I took the truck back and they installed a master cylinder with no results. It's now at the Chevy dealer and they say it's normal - BS! I had good brakes before I had all of the brake parts replaced, no one can figure it out. If you have a load in the truck or if you tow anything you better be looking at the ditch to avoid an accident. The original brakes would put you nose into the windshield and now I could stop it better the Fred Flinstone way. Anyone have an answer????????

Jun 18, 2009 | 1998 Chevrolet C1500

1 Answer

Brake Problems

the only thing left unless you have a leak is the proportioning valve A soft pedal can also be caused by badly adjusted rear brakes but you shouldn't experience a pedal fade right to the floor with bad adjustment.

May 15, 2009 | 1995 Chevrolet C1500

Not finding what you are looking for?
1995 Chevrolet K1500 Logo

3,061 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts


Level 3 Expert

76164 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8273 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides