Hello Everyone. I have a 2018 CT6 Platinum. I have been looking for a new or rebuilt transfer case (6-12 month warranty) for well over 8 months. Parr # 84534167. I have contacted my local Cadillac dealership (Rick Hendrick) and GM with absolutely no help. It seems the part is no longer being manufactured and is unavailable EVERYWHERE. I've even searched in Canada! If anyone has any information, I'd be greatly appreciative. I live in Virginia Thank you.