In large bowl beat cake mix, pudding mix, water, butter, rum and eggs on low speed for 30 seconds.
Beat on medium speed for 2 minutes.
Spread in baking pan.
Bake 30-35 minutes or until passes toothpick test.
Cool 15 minutes and remove from pan. Cool completely about 2 hours.
For frosting, microwave vanilla frosting for 15 seconds. Add rum to frosting mixture and gently pour over cake. Sprinkle chopped pecans.