Why is my brake pedal soft on my 2004 Silverado?

I am having trouble trying to fix a low and soft brake pedal on my 2004 Silverado. I have already replaced the master cylinder, flushed and bled the brake lines at all four wheels. Still the pedal is low and soft. Does anyone know what it could be? There is no loss of brake fluid any where. The master cylinder reservoir is not losing fluid.

What kind of brakes does a 2003 Silverado have?

“With 12,885 miles on my 2003 Silverado the brakes have had a soft pedal from day one. It goes to floor at times when making a hard stop. I rolled out into an intersection on a downhill road with the pedal on the floor more than once.

How do you know if your brakes are working on a Chevy Silverado?

Go about 30 mph and hit the brake pedal firm and hard. You should feel the pedal pulsate , which indicates that the system is working. Do this 4 or 5 times, then go back and bleed the brakes in the proper sequence.

How do you Bleed brake lines on a Chevy Silverado?

Bleed the system correctly starting at the bypass valve then working from the next farthest out caliper (rt rear) next closest and so on until you’ve bled all the calipers. It might take two trips around to get all he air out. I forgot to mention that I also took it to a mechanic 2 times to have the lines bled.

Why is my brake pedal not working properly?

Pumping the pedal sounds like either ai in the lines or a bad booster. Bleed the system correctly starting at the bypass valve then working from the next farthest out caliper (rt rear) next closest and so on until you’ve bled all the calipers. It might take two trips around to get all he air out.

How to diagnose a soft brake pedal?

This can usually be diagnosed when a somewhat soft pedal gets worse. Pump the pedal gently and then hold the brake pedal. If while holding the pedal it starts to creep downward, you more than likely have a master cylinder that is leaking internally and not able to keep pressure at the necessary amount.

Why are my brake pedals not working properly?

A slow descent of the brake pedal means that the pressure is leaking out of the master cylinder. The brakes can fail if your hydraulic system or master cylinder is leaking. Pulsation: This is the symptom of a brake rotor that has warped.

What does it mean when your brake rotor is leaking?

What’s the problem with my GM Silverado brakes?

The problem came back after both times from the mechanic. He says he found no problems. 😐 The brakes will feel high and firm one day, then another day they will be low and soft. I do not have to push the pedal hard to get braking, it just goes down too far.

Why do I have a brake problem on my 2004 Silverado?

When at a stop, I can feel the pedal slowly sinking. Pumping the pedal sounds like either ai in the lines or a bad booster. Bleed the system correctly starting at the bypass valve then working from the next farthest out caliper (rt rear) next closest and so on until you’ve bled all the calipers.

What causes the brake pedal to sink to the floor?

When the brake pedal gets soft or sinks to the floor, it’s generally due to a leak in the braking system, most commonly the master cylinder leaking internally or externally. The first thing you should do is check your brake fluid—look in your owner’s manual to see how.

Why are my brakes not working at low speed?

Once through the gate, I got up to about 20 mph and tried the brakes and they worked fine however when I got to the parking lot and was backing into a space, the issue started again. It appears the problem was only happening at very low speed.

What does it mean when your brake pedal is sinking?

Sinking Pedal: You may notice this while sitting at a stop light. A slow descent of the brake pedal means that the pressure is leaking out of the master cylinder. The brakes can fail if your hydraulic system or master cylinder is leaking. Pulsation: This is the symptom of a brake rotor that has warped.

What causes a soft brake pedal on a Chevy?

Soft or Spongy Brake Pedal: Too much air in the system due to improper bleeding is usually the cause of this problem. However, it can also be due to fluid loss or a low fluid level. Bleed the brake lines as recommended by Chevy to fix this. You could also have a ballooning brake hose when the brakes are applied.

Is there a brake problem on a 2015 Silverado?

When I got to my office, I did some research and found this problem is not new. Apparently this problem has been reported on the 2015-2016 Cadillac Escalade, 2014-2016 Chevrolet Silverado 1500, 2015-2016 Chevrolet Suburban, 2015-2016 Chevrolet Tahoe, 2014-2016 GMC Sierra 1500 and 2015-2016 Yukon.

Why are my brakes failing at low speeds?

When pressing the brakes at low speeds such as in a drive thru or parking lot, there is a pressure loss in the brakes. This requires significantly increased braking pressure to stop. Failures are associated with a ticking sound coming from the engine compartment or vibration in the pedals.

What should I do if my brake pedal goes to the floor?

Fill the brake reservoir back up with the appropriate brake fluid for your vehicle. Pump the brakes for a few minutes with the Silverado’s engine running (check the fluid level from time to time, always put the lid on the master cylinder, you don’t want more air entering the system). Look behind all four wheels.

Can a Hydro Boost cause no brake pedal?

The hydro boost will not cause no pedal. It is designed to have manual brakes if the PS pump fails or runs out of fluid. Your brakes would just be harder to push. Just FYI for the future. Did you find the recommended reading relevant to this discussion?

What should I do if my brake light wont turn on?

Only one of the switch terminals should turn on the test light. When you depress the brake pedal, both switch terminals should turn on the test light. If only one of the wires turns on the test light, unplug the switch and jump the two connections at the connector.

Where are the brake lights on a Chevy Silverado?

Check the Brake Lights Circuit. Start at the fuse box under the hood and make sure the brake lights fuse is not blown, that the terminals are free of corrosion and that the connections are tight. Then check the brake light switch on the bake pedal arm. Back probe the switch terminals with a test light.

What kind of brake system does GM Silverado have?

The only thing that has not been replaced are the front brake lines. [h=2]Hydro-boost [/h] Though not as common as vacuum booster power brake systems, some vehicles are equipped with Bendix “Hydro-Boost” power brakes. This system uses hydraulic pressure generated by the power steering pump rather than engine vacuum to provide power assist.

Why is my brake pedal soft on my 2004 Silverado?