About 2 years ago my Tahoe started vibrating heavily. It was so bad I thought the truck was about to fall apart. It gets as bad as it can get at around 30 mph. After going and having it checked out by numerous people I had replaced the front spindles and even the rear end with no results. I was told by someone to try removing the 4wd drive shaft and after that I had no problems. The transfer case was pertty much gone at the moment and I assumed that it was the problem. About a week ago I had my transmission rebuilt and got a new transfer case. Problem is that the vibration is back and I have no idea what it could be. I'm hoping one of you can help me fix this. Any help would be greatly appreciated.

Drop The Tranny Pan And See If There Is Water In The Fluid....my Guess Is The Tranny Is Shot. Ive Had The Same Problem In My 04 Tahoe And My 93 Explorer