Both the driver's side and passenger side seats won't move forward or reverse. All other functions work as expected. The driver's side memory return works also. The driver's side stopped working first and then the passenger's side stopped. I don't move my seat except for when the memory thing works. No one sits in the passenger seat so it can't be worn out from that.
I did a search here and nothing turned up.
The CBs under the dash are good.
The tracks appear to be free of obstructions.
Other than removing the seats I don't have a clue as to the problem but perhaps someone has had the problem such as mine.

 

Oh hell, it's a 2012 Silverado 3500 HD.