2001 GrandCherolee Models Power Seat Adjustment

The electronic driver's seat on my beloved GC Laredo has locked in a VERY forward position and will not adjust back. All other controls are working (incline, seat angle) but the entire seat will not go forward or back. Can hear motor kicking in when I toggle the control, but nothing happens! Is there a quick fix to readjust the seat until I can get it into service shop? And, if not, what can I expect to hear as a "diagnosis"? If it is a motor, can the motor from the passenger seat be exchanged? (I don't need the controls on the passenger seat!) Please hurry.I can barely get in behind the wheel to drive and this is my only vehicle!
Thanks.