it is Likely that an error was made or there is a failed or damaged part in the system.
I have seen all the following failures in order of probability:
Why do brake pads squeak after replacing pads?
How do you change brake pads on a 2002 Nissan Sentra? How do you change brake pads on a 2002 Nissan Sentra? How do you change brake pads on a 2002 Nissan Sentra?
Inspect the brake pads. They are probably worn out and need replacing.
how do you replace brake-pads on vw beetle 2002?
how do change brake pads on a 2002 dodge pickup 4x4
Brake pads are the pads that sit on top of the rotor that when the brake pedal is pressed the brake pads squeeze the rotor and the car stops. Signs that they need replacing are if you hear squeaking when pressing the brake pedal.
How to change brake pads on 2002 GMC Envoy front brakes.
Replacing the brake pads on your 1982 Oldsmobile Cutlass is quite easy. Remove the brake pad Springs and caliper. The brake pads will come off. Reverse the process to install the new brake pads
Answering "How do you change the rear brake pads on a 2002 Chevy Avalanche
If you did not open any brake lines and only replaced the pads there is no need to bleed the system.
A good store to purchase brake pads from is Parts Source. You can even ask the employees for tips and pointers if you are not completely confident in replacing brake pads.
You do not need a torque wrench when replacing brake pads and rotors. Some of the tools needed to change the rotors and pads are the c-clamp, sockets, wrench, grease, and brake cleaner.