Preheat oven to 350 degrees. Spray bundt pan with non-stick cooking spray.
In a medium bowl, add cake mix, pudding, eggs, oil, and water. Mix with rubber spatula until just combined.
Using and electric mixer, beat ingredients until combined with no lumps.
Pour into prepared pan.
Cook for 45 minutes. Check to see if it is completely cooked by sticking a toothpick in the center of the cake. If there is still cake on the toothpick then cook for 5 more minutes.
Allow cake to cool completely in the pan.
Invert bundt pan over a dish and give it a jiggle to pop it out of the pan.