Place onions in bottom of the BLACK + DECKER™ 4-Quart Slow Cooker stoneware pot. Season pork with salt and pepper and place on top of onions, fat side up.
In large measuring cup or bowl, combine remaining ingredients; stir to blend. Pour over pork.
Cover and cook on HIGH for 5 hours or until pork shreds easily when touched with a fork. Remove pork from cooking pot; let stand 5 min.
Using 2 forks, shred pork. Return the meat to the slow cooker.
Fill buns with pork and coleslaw.