When I was in Jamaica, there was Jerk seasoned everything! Jerk Chicken and Jerk Pork. This sandwich brings me back there, eating Conch and Jerk Pork. Just put the seasonings in, set your slow cooker and let it do the work for you!
Spray 3 1/2- to 4-quart slow cooker with cooking spray. Remove fat from pork. Rub jerk seasoning over pork; sprinkle with thyme. Place pork in slow cooker. Sprinkle with onion. Pour cola over pork.
Cover; cook on Low heat setting 8 to 10 hours.
Remove pork from slow cooker; reserve 1/2 cup juices. Use 2 forks to pull pork into shreds. Place pork in slow cooker. Stir in barbecue sauce and reserved juices. Increase heat setting to High. Cover; cook 30 to 45 minutes or until thoroughly heated. Spoon filling onto buns.