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 Chevy Duramax have?
2004 lb7 Cali. emissions ECLB 2500 HD. Tows 12K lb. 5th wheel. Injectors replaced at 49K miles (Jan. 2012). Fumoto drain valve and stainless bleeder screw from Merchant. Bilstein 5100’s from Norcal Nick.
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 did I Fix my Chevy Duramax soft brakes?
I managed to borrow the correct puller to get the pulley off (and back on) picked up a replacement hose from the Hydroboost unit to the back of the pump. About 4 hours of fun swapping out the pump, changing the pulley replacing the line, bleeding the system.
2004 lb7 Cali. emissions ECLB 2500 HD. Tows 12K lb. 5th wheel. Injectors replaced at 49K miles (Jan. 2012). Fumoto drain valve and stainless bleeder screw from Merchant. Bilstein 5100’s from Norcal Nick.
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’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.
I managed to borrow the correct puller to get the pulley off (and back on) picked up a replacement hose from the Hydroboost unit to the back of the pump. About 4 hours of fun swapping out the pump, changing the pulley replacing the line, bleeding the system.
How to replace brakes and rotors GMC Yukon Denali?
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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.
Is there a problem with my disc brakes?
There is no loss of brake fluid any where. The master cylinder reservoir is not losing fluid. My truck has disc brakes on all four wheels, and the pads are in good shape. I do not think there is anything wrong with the calipers because the truck does not pull to one side.
What to do if your Chevy brake pads are making noise?
A brake pad that is semi-metallic will be noisier than a non-asbestos or ceramic pad. You should put new pads on your Chevy and replace or repair the rotors. You could add shims, use a brake noise aerosol, or brake grease to the backs of the pads to dampen the noise. Brake Chatter: Warped or improperly finished rotors will cause this noise.
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.
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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.
Where is the manual button on a GMC Sierra?
To adjust the front seatback, lift the manual lever located on the outboard side of the seat. Release the lever to lock the seatback where you want it. Lift the lever again without pushing on the seatback and the seatback will go to an upright position.
Who is the owner of the GMC Sierra?
2004 GMC Sierra Owner ManualM GENERAL MOTORS, GM, the GM Emblem, GMC, the GMC Truck Emblem and the name SIERRA are registered trademarks of General Motors Corporation. This manual includes the latest information at the time it was printed.
What kind of brakes do GMC Sierra 1500 have?
I have a 2003 Gmc Sierra 1500 ext cab 4×4 Z71. Ive only owned it a little over a year but as long as Ive had it the brakes have been very soft, I have to push the pedal nearly to the floor for anything to happen. I was going to start replacing all the calipers, rotors and pads but though I might be able to find some upgraded parts form newer years.
How can I tell if my Silverado has spongy brakes?
If one is noticeably softer than the other, trace the line along that route and test each component (E.G., flexible lines for swelling under pressure, wheel caliper leaks). Also check to see that rotor thickness is still within specs. Although you already bled the system, make sure that you got all of the old fluid out.
What causes spongy brake pads on GM trucks?
Although you already bled the system, make sure that you got all of the old fluid out. Bleed until clean fluid comes through. This is a common problem on the GM trucks. The problem is with the pins that the caliper slides on and the fit of the pads in the caliper. Start by removing the pins and make sure they are clean and free of corrosion.
I have a 2003 Gmc Sierra 1500 ext cab 4×4 Z71. Ive only owned it a little over a year but as long as Ive had it the brakes have been very soft, I have to push the pedal nearly to the floor for anything to happen. I was going to start replacing all the calipers, rotors and pads but though I might be able to find some upgraded parts form newer years.
If one is noticeably softer than the other, trace the line along that route and test each component (E.G., flexible lines for swelling under pressure, wheel caliper leaks). Also check to see that rotor thickness is still within specs. Although you already bled the system, make sure that you got all of the old fluid out.
Although you already bled the system, make sure that you got all of the old fluid out. Bleed until clean fluid comes through. This is a common problem on the GM trucks. The problem is with the pins that the caliper slides on and the fit of the pads in the caliper. Start by removing the pins and make sure they are clean and free of corrosion.
Why is there no pedal on my new master cylinder?
No Pedal with New Master Cylinder Installation – Quick Fix or Check? A “no brake pedal” condition can be encountered after a new master cylinder is installed, leading the technician to believe that the master cylinder is defective.
What to know about no brake pedal condition?
A good indication of this condition is lack of fluid flow from the brake bleeders. Ensure master cylinder is bench bled prior to installation. Follow the vehicle’s manufacturer-specified bleeding procedure.
What causes the brake pedal to go to the floor?
The brake pedal will go to the floor and subsequent efforts to get a satisfactory brake pedal will fail. A good indication of this condition is lack of fluid flow from the brake bleeders.
Where is the booster pin on a soft brake pedal?
One of the most overlooked things is probably the simplest fix. Extending out of the booster is a pin. This pin simply extends into the piston in the back of the master cylinder. Have you ever set this distance? If you answered no, not only is this something you must do, it may be the reason for your soft pedal. Have we confused you?
What should the center slide be on a soft brake pedal?
The center slide should be 0.020” from the pin on the booster. If not, determine the distance needed and adjust the pin in the booster to the proper length. Some boosters have a threaded pin in the end and others can only be adjusted by grinding on the pin.
Where is the depth gauge on a soft brake pedal?
The simple thing to start with is a handy little tool that we offer. It is a Push Rod Depth Gauge (p/n: AC2003) and can be seen below. Simply set against the back flange of the master cylinder, push in on the center slide and then flip it over and lay it against the front edge of the booster.