Transmission out of a 2006 Chevy duramax lbz. Good Transmission. Mechanic thought it was the problem. Replaced then took to dealer. Dealer service said it was transfer case. Replaced case and problem solved. Just trying to get so e of my money back. Transfer case is available. $350. Would need rebuilt. Gonna do that soon but price will go up on it. I will not answer to common "Is it still available". When it's sold I will immediately remove post.