Sprinkle pecans evenly in bottom of a 10-inch Bundt pan coated with cooking spray. Place rolls evenly in pan, overlapping when necessary. Sprinkle rolls with pudding mix; sprinkle with brown sugar, and drizzle evenly with butter. Cover pan with a damp towel, and place in a cold oven 8 hours.
Remove pan from oven.
Preheat oven to 350°.
Uncover rolls and bake at 350° for 32 to 35 minutes or until rolls are browned. Remove from oven and let stand 5 minutes. Invert rolls onto a serving platter. Serve immediately.