A/C blows cold on drivers side and hot on passenger side How do I get the Codes on 2005 Cadillac DeVille

The temp, control on passenger side indicate it is working fine it still blows hot no matter what you put it on.

Asked by for the 2005 Cadillac DeVille
1 answer
The door actuator motor is broke and needs replacement....common problem your local shop can fix.