Sticking Brake Caliper
 

2001 Sebring rear caliper sticking, replaced caliper, still sticking, PLEASE HELP.

Try replacing the hose. Somehow, they can go bad and act like a check valve, allowing fluid to go towards the caliper but not return.

Failing that (cheap), it could be the proportioning valve if you have non-abs brakes (not so cheap) or the abs controller (expensive) if you have abs.