Error codes after recall work

Hello everyone. After I had the turn signal recall work performed, my truck started intermittently showing the following codes: (C1241low or high power supply voltage) & (C1417 back-up power voltage high abnormal). Now they are on constantly. Has anyone experienced this yet? I'm going to take it back to the dealer when I get some free time as I feel that they caused this issue. I'm pretty handy with fixing things but do not have experience with this issue. Any help would be appreciated.
2018, CM, 4x4, 5.7L

 

Ya take it back. I had the turn signal recall performed during my last service visit - no issues.

 

If you can't take it back quickly, at least call the dealer to get it on record that the codes appeared right after their work.