Melt caramels with ⅓ c. evaporated milk in heavy saucepan. Cook over low heat, stirring constantly until melted. Set aside.
Preheat oven to 350°. Grease 9x13 pan. Or use parchment paper. Combine cake mix, remaining evaporated milk, butter and pecans. Stir until mixed. Press ½ of cake mixture into greased 9x13 pan and bake for 6 minutes at 350°. Remove from oven and sprinkle chocolate chips on top. Pour melted caramel evenly over top. Spread if desired so it’s evenly distributed. Spoon or crumble remaining cake mixture over caramel evenly. I like to press it slightly in my fingers before laying top so I have a more uniform top. Bake at 350° for 15-18 minutes. Cool. Refrigerate 30 minutes to set caramel. Cut into squares.