A/C Repair

[Skorkin]

Hi I just bought my first powerstroke yesterday so I dont know to much about these I had a duramax for a long time. Well the story on the truck is someone broke into it stole the radio and I guess the ac ducts got stolen or something because the ac works but it only blows cold through the defrost vents and not the front vents would could be this problem?

[jc82chevyman]

Vacuum leak it defaults to defrost check all your lines and you will find a bad or your vacuum pump is bad