Heat oven to 375. Spray 8 inch square (2 quart) glass baking dish with cooking spray.
In small bowl, mix corn and chilies; set aside. In baking dish, layer 4 tortillas, half each of the pork, corn mixture, sour cream, enchilada sauce and 1/2 cup of the cheese; repeat layering once. Layer top with remaining tortillas; sprinkle with remaining cheese.
Cover, bake 30 minutes. Uncover, bake 10-15 minutes longer or until hot and bubbly.