I got this recipe from the DamnDelicious.net Blog and I wanted to save it. They're easiest carnitas you will ever make right in the crockpot. Cooked low and slow for the most amazing fall-apart tender pork goodness!
In a small bowl, combine chili powder, cumin, oregano, salt and pepper. Season pork loin with spice mixture, rubbing in thoroughly on all sides.
Place garlic, onions, orange juice, lime juice and seasoned pork shoulder into a slow cooker. Cover and cook on low heat for 8 hours or on high heat for 4-5 hours.
Remove pork shoulder from the slow cooker and shred the meat before returning to the pot with the juices; season with salt and pepper, to taste, if needed. Cover and keep warm for an additional 30 minutes.
Preheat oven to broil. Place carnitas onto a baking sheet and broil until crisp and crusted, about 3-4 minutes.