Cadillac Repair: repleacing breakpads, parking brake cable, caliper

Question
how do i push in the break piston for rear breakpads on a sedan diville 94

Answer
You DON'T. You must remove the parking brake cable from the back of the caliper and use a special tool to twist the piston inward as it is mounted on a threaded bolt.  Picture locations of the components within the system that is causing you problems of which can't be done on this website which only allows one picture.  I do not have a website so you will have to e-mail: onlineautohelp@msn.com in order to obtain the information.