Auto Zone, Advance, O'Reillys, and most others.
Your caliper needs replaced. The piston inside is corroded, and is not releasing. The new caliper costs about 24 bucks at the part store. Hope I could help.
Sticky/stuck caliper slides, sticky/stuck caliper piston, collapsed brake hose, pinched brake line,
Either the caliper piston is frozen stuck or the hydraulic brake hose has collapsed internally. Open the bleeder on that caliper and see if the pressure releases, if it does you have a bad brake hose.
If you can't compress the piston with a C clamp back in to position to fit the new brake pads I would suggest replacing the caliper completely.
The front brake caliper should retract with minimal effort with the aid of a c-clamp and an old brake pad. If it takes alot of pressure to make it retract I would replace the caliper. The rear brake caliper is a different story because it houses the e-brake also. The brake caliper piston must be rotated clockwise as you apply pressure to retract it. This requires a special tool that you can purchase from your local auto parts store. This tool is not expensive, it should be less than $20.
You have a leak in the caliper piston most likely due to rust which causes brake fluid to leak past the rubber seal. To fix, you have to either rebuild the caliper yourself or buy a rebuilt caliper from the parts store. If you buy a rebuilt caliper, it will come loaded or unloaded. Loaded = comes with brake pads. Unloaded = caliper by itself (no pads).
A stuck caliper piston. Stuck caliper slide pins. Pinched brake line/hose. Frozen/stuck parking brake cable/mechanism.
To replace a faulty brake caliper with a new caliper or a rebuilt caliper and assuming that is all it needs, a garage would probably charge you one hour of labor plus the cost of the caliper and brake fluid. Call your local auto parts store to get a quote on the brake caliper.
Stuck caliper piston, frozen caliper sliders, collasped brake hose, pinched brake line, grease on the rotor and worn out steering or suspension parts.
On a 13 year old truck the brakes may need more than just brake pads. The calipers, caliper slide pins, caliper pin bushings, caliper piston, seals, brake hoses, brake lines, brake fluid, brake rotors, master cylinder, the rear brakes and parking brake should all be inspected for possible problems. I would recommend purchasing a Chilton's repair manual for your vehicle from your local auto parts store to help you do it right and safely.
If you wanted to find a good place to fix a faulty caliper problem, then you would have to visit Goodyear. They are really good when it comes to mechanical brake problems.
Buy a small universal piston retractor from an auto supply shop (square in shape with strange different shapes coming out of it) find the correct side of the tool, the one that best fits the grooves on the piston. Attach the piston retractor tool to your ratchet Rotate the piston back into the caliper as you would with a bolt or screw.