Big trouble changing these brakes pads!

I've just spent the evening trying to get new brake pads on my 2004 LS.New ceramic pads for the rear, easiest caliper assembly to take off,no problems until I tried to get the caliper piston pushed in. I used my trusty C clamp this piston would not even budge. Even loosened the brake bleeder, still no movement. Hey I have done this so many times with other cars ,but never did the piston just simply refuse to move any at all.Is there something that I'm missing here, maybe a trick or hint, anything will be appreciated, Thanks

lol, they screw in using a special tool, you cant use a C-clamp to compress them, see the little indents on the caliper face? You need a tool thats made for that or you can try with needle nose pliers.

Thanks, now where to find the tool

Thanks, now where to find the tool

This answers alot of questions. I'm glad I didn't try to force it. Still there are two problems. One-where do I find this specific tool?,and two,how to get my wife to let me back in the house,(I took out my frustration on her last night-definitely the wrong thing to do).Thanks

Most any parts store will have a tool - like most you get what you pay for. The cheap one may work or may frustrate you more. See if they have a rental rate on a professional tool.

As for the wife, ... you're on your own there.

lol, I borrowed one from a friend who works for ford, the professional one is the way to go, is has two brake pad looking things that sit in the caliper where the brake pads goa dnt the "tool" that fits in the groves is on one end, you secure it tight by expanding it out then you use a wrench to wind it up. See if Autozone has something you can borrow, they surprise me sometimes otherwise just improvise. it doesn't take too much force to turn them

Sorry, Dave!

There's things I've been doing for so long that I sometimes just assume everybody else knows how to do them too.

Whatever your line of expertise is, you probably take some stuff completely for granted that I wouldn't have a clue about.

Clockwise = in.
The piston may be stiff to begin, but once it starts to rotate, it should go fairly easily. Spray a little bit of penetrating fluid in the area where the dust boot goes into the piston groove so it doesn't try to turn with the piston.
After you're done the job, step on the brakes and work the parking brake a few times so that the piston will ratchet back out to the correct adjustment.