Pork Sandwiches w/Root beer BBQ sauce

1 boneless pork sirloin roast (2 lbs)
1 medium onion, sliced
2 tbsp. dried minced garlic
3 cups root beer,  divided
1 bottle (12 oz) chili sauce
1/8 tsp. hot pepper sauce
8 kaiser rolls, split

1) Place roast in a slow cooker. add onion, garlic and 1 cup root beer. Cover and cook on low for 9-10 hrs or until meat is tender.
2) In a small saucepan, combine chili sauce, hot pepper and remaining soda. Bring to a boil. Reduce heat; simmer, uncovered, for 20-25 minutes or until thickened.
3) Remove meat from slow cooker; cool slightly. Discard cooking juices. Shred pork with two forks and return to slow cooker. Stir in bbq sauce. Cover and cook on low for 30 minutes or until heated through. Serve on rolls.

Makes at least 8 servings