Slow Cooker Barbecue Pork Sandwiches With Crunchy Coleslaw

Name: Slow Cooker Barbecue Pork Sandwiches With Crunchy Coleslaw
Ingredients: 2 pounds boneless pork shoulder or butt, trimmed of excess fat; ¼ cup packed brown sugar; 1 teaspoon chili powder; 1 garlic clove, chopped; kosher salt and black pepper; ½ cup plus 2 tablespoons cider vinegar; ¼ cup mayonnaise; ¼ cup sour cream; ½ teaspoon granulated sugar; 4 cups coleslaw mix (2/3 of a 14-ounce package); 1 cup barbecue sauce; 6 soft sandwich rolls, split; bread-and-butter pickles and potato chips, for serving