I have an 09 Ve omega 4 speed. The transmission was playing up really bad, slipping and clunking when changing gears. Took it to the mechanics and he said I needed to replace the vss output sensor and it was going to cost around $1500 because it was inside the gearbox. After a few hours or reading the repair manual we actually found out it's on the outside of the box. I replaced that and it's still changing a bit rough especially between 1&2 but it'll change fine when it's under load.. Anyone got a clue what's wrong? Also if anyone could point me to where the input vss location is would be great!