My 1997-SC-XLT's Power Captian Seat started acting up. Everything works ok except the front to back motion of the seat. The left side of the seat moves, but the right side stays stationary. It was working fine one day and was stuck the next?? All of the other movements work fine. However, without the front to back motion, my wife (5'3") can not drive the truck. Has anyone experienced this problem and is there a way to fix it without an expensive trip to the dealer. Help!