Disc’s then start with rocking to use the vehicles weight to do the work for you. And if that doesn’t work pull the tire again and work the pads. The pad/shoes get stuck to the drum or rotor and will just need a sharp wrap or jerk to get free. Sitting will usually free up with rocking, a big hammer may be needed on the pads. Got to get the force to the pad to free it. Good luck.
Note: rocking a vehicle back and fourth can start with you and your buddies pushing and pulling on it but does not end there. Usually on older vehicles rocking to loosen the brakes ends up with chains to another vehicle to snatch it good and loosen the pads/shoes. I have see some go as far as to drag one down a road to free them but plan on flat spots on tires if you do that.
Writer of this does not imply in braking any laws, check state and federal regulations before dragging, pulling, snatching any vehicle on state or federal roads. Use common sense and don’t hurt yourself or others.
