Try and take a small piece of wood and a c clamp Put the wood over the piston in the caliper and put the c clamp around that and the back of the caliper and tighten This should cause the piston to push back into the caliper
take it to a brake specialist
you will have to get a brake caliper tool. the rear caliper the center part turn or screws in with this tool
Defective caliper, restricted hose, caliper sliders sticking, contaminated brake fluid (probably not contaminated if only 1 front caliper).
failing brake caliper caliper seizing
Go to autozone
A sticky brake caliper could do that.
I wish i knew
"Caliper anchor bolts" hold the brake caliper on, they require a 3/8" Allen wrench to remove.
How do u remove break light sensor
Could be a frozen piston inside the caliper Could be a defective brake hose Could be a damaged (pinched) brake line
Collapse caliper(screw driver to pry caliper apart), remove brake pin plug, remove brake pin, remove pads, reverse for install
Hub Knuckle