In a skillet, cook ground beef until browned and cooked through. Drain fat.
Add sugar, garlic powder, chili powder, cumin, garlic salt, paprika, and pepper. Stir and cook for an additional minute.
Transfer to a large slow cooker. Add beef broth, diced tomatoes, drained kidney beans, and tomato sauce to the slow cooker.
Stir and cook on HIGH for 3-4 hours or on LOW for 6-8 hours.
Season with more garlic salt and pepper, if desired.
Add any toppings (sour cream, cheese, green onions, etc.) before serving.