No heat from from driver side

[Kevinsaar32]

I have a 2017 2500 tradesman 6.4L. Been having heat issues since I bought it last year. Heat works in the passenger side but not the driver. I replaced the thermostat and housing the heat works all around when I’m idling but when I start driving the heat cools down on the driver side but continues working for the passenger. The defrosters also pump either cool or Luke warm air. The blender doors seem to be working fine but I could be wrong. If I put the vents on circulate it helps a bit with the temperature. Driving the coolant temp hovers around 210°-215° idle it gets to about 220-224°. Any recommendations to try to resolve this?

 

[mrack]

It’s your heater core, your one of the earlier of about a hundred posts on this every winter lol. Backflush with CLR, if that doesn’t work replace it. Don’t waste time on blend doors, that’s never the cause

 

[GTyankee]

This area is for Gen 2 Dodge Rams

It should be posted in Gen 4 section for Ram 2500s

 

[mtnrider]

Clogged heater core. Search youtube on how to flush it and if that doesn't work it will have to be replaced.

.