In a small bowl, whisk syrup, vinegar, salt and pepper until blended. Pour 1/2 cup marinade into a shallow bowl. Add pork chops; turn to coat. Cover and refrigerate 1 hour. Reserve remaining marinade for basting., Drain pork chops, discarding marinade. On an oiled grill, cook pork chops, covered, over medium heat or broil 4 in. from heat 13-17 minutes or until a thermometer reads 145°, turning occasionally and basting with reserved marinade during the last 5 minutes. Let stand 5 minutes before serving.