the driver's side (left) memory seat function has stopped working what is wrong? on 2005 Cadillac DeVille

I have checked all the fuse boxes and found no blown ones. Also since the left side air bags were repaired the left rear power lock nor the power window will with the door closed. They do operate while the door is open???? My code reader shows nothing.

Left side airbags were repaired???
Due to accident?
No, the air bag light came on and stayed on, so the dealer repaired the system. This was about a year ago.
We didn't notice the left rear door problem because no one rides back there. Then the problem with the memory seat started. Any ideas?
'Scan test' BCM...... Not a code reader!