DODGE PARKING BRAKE

I Have A 98 Dodge Grand Caravan, It Has About 215,000 Miles. My Wife Parked On A Hill Near Our Apartment And Set The Emergency Brake. Now...

The Emergency Brake On My Van Won't Work. I Have Had All The Brakes On The Van Replaced. When You Go Over A Bump There Is A Rattling Sound...

My Brakes Are Locked Down On The Rear Wheels. I Checked The Emergency Brake And This Does Not Seem To Be The Problem. Can You Help Me?