Why the front brake stock I need released - Cars & Trucks

the problem will be in the master cylinder --blocked compensating ports not releasing the fluid back to the reservoir

It as a cilender inside you breaks the it opens and closes it's stock. Needs to take tire off . And replaced . U can release it by open bleeding valve . However the problem still be there.

check master cylinder not releasing the brakes. the brake flex hose for each wheel may have collapsed internally. the way to find out is when the brakes don`t release loosen the bleeder screw on the brake caliper if brake fluid squirts out or runs out and the brakes release then the flex hose has collapsed. if the brakes don`t release and no fluid squirts out then the calipers are seized and need replacing. the shuddering is an indication the brake rotors are probably warped and need replacing.

Sounds like you have a seizing brake master cylinder.

chek your brake pump maybe need service

this could be caused by a few things, first you need to jack the truck up you will need all 4 wheels off the ground, put the transmission in neutral and have some one get in the truck and wile turning each wheel have the person in the truck push the brake pedal the wheel should stop instantly then have the person release the brake the brake should release instantly,( do this to each wheel ) if all brakes remain locked ( wont release instantly ) then replace the master cylinder if the both rear brakes wont release instantly replace the brake hose from the frame to the rear differential, if the both front brakes wont release replace master cylinder, if only one front brake wont release open the bleeder on that brake caliper if the wheel releases replace the caliper hose if the brake still wont release with the bleeder open replace the caliper, you should replace the caliper and brake hoses as a pair.

Some Pontiac models have a release cable pull located on the drivers side lower dash panel...other models do not have a seperate release pull...the white lettered instructions could be worn off...but you will need to depress the parking pad pedal in order to release...if none of this works, your parking brake cable is stuck, and needs to be lubricated...not a costly thing...have you had the rear brakes serviced? Hope this helps...:)

it could be a stuck parking brake, in which case you'll have to get under the car and hit the rear brake drums a few times with a hammer to release the shoes from the inside of the drum. another possibility is that your front calipers are seized. in that case, you'll have to replace them and bleed the lines.

Sounds like the caliper needs replaced. Sometimes the pistons lock in the caliper and cause the brakes to drag. When the mechanic changed the brakes before, he pushed the pistons in all the way to accomodate the new brake pads. Now that they are wearing back down, it is getting to the warped spot in the caliper and starting to stick.

Well I don't think you'll need to buy parts,it sounds like there may be sludge built up between the master cylinder and the proportional valve to the front brakes.Pull the valve off(follow the line off the master cylinder and you'll find the valve)clean it and then flush/bleed the master cylinder before you reinstall,Then flush/bleed the rest of the system.There's a relly good chance that may be all you need to do,but you may need to pull the calipers and clean them also.Comment back if you need more help,Good Luck(To)Yotaguy