I am changing rear brake pads and am trying to push the piston back in to make room for the new pads. I normally use a large c-clamp but the piston doesn't want to move. This is the first time I have changed pads on a car with anti lock brakes. Is there something i need to do that i don't about? Any help will be appreciated. Thanks.

the piston in back is a screw type. it needs to be turned to get it to go back in. You should be able to use a strong pair of needlenose pliers to turn it. I cant recall if its counter clockwise or clockwise to get it back in.

they make a little tool for that. its square, like a little cube. 10.00 at local autoparts store. you put it inside and rotate the piston and turn it in.

look here:

http://www.sears.com/sr/javasr/product.do?vertical=TOOL&pid=00946344000&bidsite=&BV_UseBVCookie

they are a couple of dollars cheaper at the parts stores.

I went to my local autozone and they have a loan-a-tool program and have a specific tool for this job and it worked great. Plus it's FREE!!! Thanks to those of you who replyed. This forum has been a great help to a low bucks guy like me. Thanks again