Error code u18dc post battery failure

[MikeMikeMike]

Hi all done a few searches and googled but can't find this error


2020 GMC sierra HD 2500 Denali Diesel.  My  battery had depleted. Recharged it and then was able to start.  I got some really odd things calibrate driver window by opening and closing. check engine light. I called onstarI mean we pay for it right they have me error code u 18 DC.   I can't find a thing.  Any ideas??

[MikeMikeMike]

One more hiccup the passenger window will no longer respond.  All other windows function 

[Dusty2020Hd]

Did you get this figured out. I’m having the same problem 2020 Chevy 2500 HD Duramax  

[MannyPaz]

Having the same issue today 2022 Chevy 3500 Duramax.   Anyone come up with a solution.