[Bootlawson]

2010 dodge ram 2500 slt. I flushed heater core and fixed the blend door for outside air but now the heater and defrost work great on passenger side but still blows cool on drivers side. What did I miss

 

[Doug D]

Sounds like the driver side blend door has failed or is stuck. Could be the actuator (motor). Best way would be to have a shop or dealer retrieve any fault codes from the HVAC control module.