Changed rear brake pads on a 2000 silverado now the calipers are sticking tryed changing lines but it did not help

SOURCE: changing the brake pads and can't depress caliper piston

Use a large "C" clamp, or a large pair of channellocks.

SOURCE: my front brakes are sticking

Check out the proportioning valve.

SOURCE: How do you compress rear brake caliper?

Dear Sir/madam,

The pistons on the rear brake calipers SCREW in to the caliper. There are notches on the inner edge of the piston face. engage the notches with a large needle nose plier or a large flat washer and turn clockwise (as you face the piston) to turn the piston in.
There is a special tool that is available at your local autoparts store that is absolutely necessary and will save you a ton of time and aggravation. Using a needle nose plier or washer does not allow you to apply enough pressure unless your are the incredible hulk.

thanks
Good luck

SOURCE: changing the rear brakes on a 97 oldsmobile cutlass supreme

use a pair of pliers.put each side of the jaws of the pliers in one of the V-grooves of the piston and turn clockwise whle pushing it in

SOURCE: what tools do i need to change the rear brake pads

If you have disc brakes then all you need is a c-clamp to compress the brake caliper. If you have drum brakes then you really need to purchase a pair of brake pliers and pair of small vise grip pliers or tool to re-install your retainer springs. It isn't very expensive for either and not hard to change your own brakes. Just do one at a time and don't take everything off of both sides in case you have to look at the other side to see how things go back together. You will have to jack up one side at a time to take the tire off.