You can hear the motor working on the seat. Could it be that the seat is just off the track? And if so how can I fix it?

 

Take the seat out and inspect it. you can take apart the tracks and rails underneath the seats pretty easily.

 

You remove the seat by 4 bolts mounting it to the floor. Then unplug the motors and look for crud and dirt and stuff on the seat frame. Clean it up and lube with WD-40 on the worm gears. This assumes it is not really off the tracks :-) I fixed mine by lubing only while the seat was still bolted down ( I could see the crud and rust with a flashlight).

 

You might just have something stuck in the track