Pour 2 cups milk into large bowl. Add dry pudding mixes. Beat with wire whisk 2 min. or until well blended. (Mixture will be thick.) Spoon 1-1/2 cups of the pudding over pecans in crust. Add 1 cup of the whipped topping to remaining pudding; stir with wire whisk until well blended. Spread over pudding layer in crust; top with the remaining 1 cup whipped topping.