My 1999 Saab 9.3 passenger seat is locked up on 1999 Saab 9-3

The seat will not slide forward or backward. It is not a power seat. The lever is not broken, nor is the cable. It won't lift the metal positioner out of the slot it goes into when you let go of the lever. It's so far back I cannot get between the back seat and the passenger seat. How do I fix it?

Asked by for the 1999 Saab 9-3