hot air on one side only when heat is on

Sounds like a broken blend door or recirculation door. You will have to have a mechanic check into this. Something is blocking the driver's side from receiving hot air.

Not sure,cause one day it's hot on the passenger side, then 2 days later it's hot on the drivers side. At the same time the cold air is switching as well. 2013 Impala Ltz

Change acturatur on driver side stop ticking but now blowing hot air on driver side and cold air on passenger side 2013 impala 3.6 liter