I own a 2003 CTS. I love the car. However, for the past few weeks the left front turn signal was not blinking. Yesterday, I went to adjust the driver's side seat using the electronic adjustment.A funny thing happened. The seat move slightly and then stopped moving, back/forward/up or down. The passenger seat also stopped moving. However, the malfunctioning blinker started working like it was never out.
Is there a problem with the electrical system? What could be the cause for the seats to stop working?

Thank you

 

Most likely not related, codes likely stored in seat module.