Chocolate Bundt Cake

1 box yellow cake mix
1 small box instant chocolate pudding mix
8 oz. sour cream
1/2 c. sugar
3/4 c. oil
3/4 c. milk
4 eggs
8 oz. bag of semi-sweet chocolate chips
3/4 c. chopped pecans (optional)

Mix all ingredients together and pour into greased bundt pan. Bake at 325° for 1 hour.