Barbecued Pork Sandwiches

2 1/2-3 pound boneless pork shoulder or sirloin
2 medium onions, sliced
1 cup bottle barbecue sauce
1/2 teaspoon hot pepper sauce
2 tablespoon orange marmalade
1 tablespoon cornstarch
1 tablespoon water
6-8 sandwich buns

Cut roast into 2-inch cubes; place in 3 1/2-4 quart slow cooker with onion and barbecue sauce, hot pepper sauce and marmalade. Cover and cook on Low for 6-8 hours, until tender. Remove pork and onions from slow cooker with slotted spoon. Shred pork and set aside. Combine cornstarch and water and add this mixture to juices in slow cooker, stirring to blend well. Cover and cook on High for 1 minute; return the pork to slow cooker and heat through, on High for 10 minutes. Serve on sandwich buns. Serves 6-8.