OK so what's the deal? Everyone's saying the 99 2 piece is a direct swap into a 96 but others say it fails shortly after. My 96 is starting to act funny. Slipping in 4th gear then it catches. I recently obtained a transmission From a 96 Tahoe, but the case says otherwise. It's a 2 piece 99. Will this work in my truck? Do I need a pigtail from newer truck so I can get the ground wire? Can I just use my connector and ground the case? I appreciate any input or real experience, thanks.