Sprinkle the pork all over with salt and pepper. Transfer to a 6- to 8-quart slow cooker insert. Add the Jamaican Style Jerk Cooking sauce, vinegar, onions and garlic. Cover and cook on low for 8 hours.
Remove the pork from the slow cooker and strain the cooking liquid into a small saucepan. Bring the cooking liquid to a boil and then lower to a simmer and cook until reduced by about half.
Meanwhile, shred the pork with a fork. Add the reduced cooking liquid to the shredded pork and season with salt and pepper.
Serve the pulled pork on potato rolls with coleslaw, mango chutney and sweet potato chips on the side.
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