Preheat oven to 350 degrees
Mix first five ingredients together, cake mix through sour cream, until well combined
In a separate bowl, combine sugar, cinnamon, and pecans
Pour half of the cake mix into a greased, bundt pan. Sprinkle the nut mixture over the top of the cake mix. Pour the remaining cake batter on top of the nut mixture
Bake at 350 degrees for 40-45 minutes
Allow cake to cool before removing from pan