Mix together Coke and brown sugar for the marinade. Place in a large sealable plastic bag. Add pork loin, and massage to coat. Place in the fridge for 8 hours, to overnight.
12 oz Coke, ¼ cup brown sugar, 3 pound boneless pork loin
Remove pork from marinade and place in slow cooker. Sprinkle pork evenly with garlic salt, onion salt, chili powder and cumin and pour in the coke.
1 teaspoon garlic salt, 1 teaspoon onion salt, 1 teaspoon chili powder, 1 teaspoon ground Cumin, 12 oz Coke
Pour coke over pork. Cover and cook on low for 7-9 hours until tender and you can shred.
After the pork is tender, remove from slow cooker and use 2 forks to shred. Pour out the liquid in the slow cooker. Add pork back to slow cooker.
In a blender or food processor combine all of the ingredients for the sauce.
12 oz Coke, ¾ cup brown sugar, ½ teaspoon chili powder, ½ teaspoon ground cumin, 4 oz diced green chilies, 10 oz red enchilada sauce
Pour over pork, stirring to coat. Cook for an additional 20-30 minutes until heated through.