Combine cake mix, pudding, corn oil and water, and beat until well mixed.
Add the eggs, one at a time, mixing as you do so.
Then continue to mix while you add butter extract and vanilla.
Beat at high speed for 6 to 8 minutes.
Grease bundt pan very generously with shortening.
Sprinkle in pecans.
Add layer of batter (1/3 of it), half of filler mixture, 1/3 batter, etc.
Bake at 350° 40 to 50 minutes.
Remove from oven and let cool exactly 8 minutes.
Turn out.

Mix glaze and paint on with pastry brush.