After the pads are out use a 12 inch pry bar to collapse the caliper piston back in. By doing it now you can use the rotor as leverage, do one side and then the other, slowly, inboard outboard, until they both are in all the way. Be careful not to damage the rubber boot on the piston. You should have siphoned out some of the brake fluid in the reservoir, to keep it from spilling over when you collapse the caliper pistons. Notice the caliper has been collapsed and the silicon grease applied. (Below)

Below shows the inboard part of the left rear Brake assembly. The green arrows are the pins that are knocked out, and the yellow arrows are the 13mm bolts that have to be removed so the caliper can be removed (if you are replacing the rotor). Once the bolts are off, pull back on the caliper assembly and once free of the rotor move it inboard and let it hang. The metal brake line will flex enough to move the caliper without damaging the lines. (Careful) Now remove the 10mm locator pin on the rotor (blue circle two photos up), and smack/tap the rotor to break it loose, then wiggle it top and bottom to get it off the parking brake pads.

A good brake cleaner and tooth brush should be used to clean everything prior to applying grease to the calipers.(Protect your eyes) You might collapse the caliper pistons after you have moved it, in which case a medium pair of channel locks works well. The caliper is easier to grease once free of the rotor.

The rear brakes on the Cross Country are pictured above. To replace the pads, start by prying off the spring on the front of the caliper. (Yellow Arrow) If the rotor is being changed the 10mm pin will have to come off to get the rotor off. (Yellow circle)

After the hold down spring on the front of the caliper is off, move around to the back and remove the rubber caps for the slide pins. (Green arrows) Once the rubber caps are off a hex head socket will get the slide pins out. After the slide pins are out pull the caliper off and remove the old pads. Clean the area well with brake clean, use the silicon grease on the pad backing, and caliper piston. If the rotor is being replaced remove the 13mm bolts that hold the pad support bracket. (Pink arrows) Rear rotors have a thickness of 9.6mm new, and should have at least 8.9mm when replacing pads only. Brake pads new are 9.4mm and should be replaced at 2mm. The rear caliper is torqued to 50 Nm, the slide pins at 30 Nm, the lug nut on the wheels is 120 Nm. The part number for the silicon grease is 1161325. The rotor part number and minimum thickness is stamped on the rotor.
If you have slow speed resonance from your brakes, either buy the cut out shims or cut the ones you already have. A pair of tin snips or a good pair of sizzors would work
