Brakes

[joshdthorington]

my 2001 chevy Silverado 2500 HD 4x4 front brakes lock up spuraticly. They slowly get locked at different speeds or stress. I have to pull over release pressure at bleed screw. I have replaced front hoses and calipers. Every time I replace something it seems to do it less but over time it starts doing it again.

[Duelin]

Make sure your brake pedal is returning all the way. And not binding.

[joshdthorington]

I will check thanks

[joshdthorington]

The pedal does not seem to be hanging up it returns all the way

[joshdthorington]

Lately I don't even drive out the driveway and down road less than a mile or so and the petal gets hard and we open bleeder fluids squirts out and calipers release. Once we do that we may be able to go a day or so and it doesn't do it.

[brucelimerick]

I would re-bleed the brakes. The main thing that can cause that much pressure is air in the caliper. It gets hot from your braking, expands and applies the brakes. Brake fluid when it gets hot won't expand enough to do that.

Releasing pressure with the bleed screws will let air in unless you have a hose to a jar with brake fluid in it.

[xrs8pp]

Inner part of the brake hose is collapsed restricting the flow of fluid back to the master cylinder when you let off the pedal. Replace both hoses and bleed.

 

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[joshdthorington]

The rubber lines are the first thing I replaced

[Explorer]

If I understand this right, it is affecting both front wheels. I would be looking at the next item in line, the master cylinder.

[joshdthorington]

Replacing hoses is the first thing I did. It was good for little bit then started happening again then we replaced calipers cause they seemed to stick a little. Then it was good for a bit then started happening again.

[sahls01gmc]

I replied to your other thread, it's most likely your master cylinder. I had the same thing happen to me.