no heat on driver side only passenger side

Hello, If you hear the new blend doors working as you change the temperature setting from cool to hot, but the air temperature does not change, the blend doors are likely to blame. If you notice the blend door actuators are not moving when you change the temperature, check your fuses. Also, the HVAC control module may have failed, there may be an issue in the circuit, or the blend doors may be damaged inside the ducts.