I have recently begun to get some squeaks and a slight vibration at the very back end of the electric seat tracks/rails when moving the seat backwards. Not as much when moving seat fwd.

Any ideas on how to re-lubricate the tracks to calm this or is this a sign of impending doom for the motor, etc?

 

Me too! I got the same problem.
I think Jigaloo or wd40 might help.
Let me know if that works.

 

Put the seat all the way back, & use GREESE (never WD40) to lube the rails, not a lot. The move it all the way up & get the back.

 

What Stealth said. WD40 is a water displacer (hense the name) not a true lubricant so it will work for a while then evaporate leaving even less lube than you started with.