Quote Originally Posted by bennjamin View Post
its because the DIFF is moving around , but the drivetrain is not transferring power to the wheels. The VSS is reading off the diff.

As said before by myself and others , check the driveshafts if they are in properly or blown cv etc
If the clutch was failing, the dif wouldn't be moving.

My quote was in reply to the guy before me, not the OP.