Vacuum booster is working--When vehicle off there is no vacuum assist (for power brakes) When vehicle is on vacuum is present Brake pedal going to floor is another problem--no fluid in master cylinder? Leak in system? Brakes not adjusted properly?
Have your brake system checked immediately! (by a proffesional)
Low fluid level or defective master cylinder.
dude! sounds like air brake sys.(system needs to be bled get air out of sys.)As for gettin stuck , check linkage,brake booster and master cyl.
A brake fluid leak in the system would do that. Check the brake fluid reservoir. If it is empty you are in need of brake work asap!
A brake pedal going directly to the floor is a sign of a few things. First, you are in need of brake fluid. Second, the brake pads are probably almost worn out. They may be worn out past the point the ABS light would be active. The ABS light may also be burned out.
Your front brake rotors are warped. They need to be removed and turned true on a lathe. Many auto parts stores offer this service.
It would be the rubber pad that sits on your brake pedal. Unless they were referring to brake pads, which are the pads which enables your vehicle to stop by pressing the brake pedal.
Usually that would be caused by a faulty brake light switch connected TO the brake pedal. If the brakes work the pedal is probably ok.
brake switch located on the top of the brake pedal
Adjust the brake switch located on either the brake lever itself, or it will be attached underneath the dash. SOunds like your brake switch is off or broken. Look at the brake pedal and there is a switch around it that gets activated by you pushing the pedal - that is what needs to be adjusted or replaced. The brake light switch has probably come loose or broken. Look under the dash near the brake pedal arm. There is a switch attached to a bracket.
If you break pedal is pulsing but is not soft or spongy, that sounds like the rotors on your truck are warped and they need to be turned. My suggestion would be take your truck to a local brake shop and have them take a look.
A leak or a failed master cylinder.