Heat Not Coming on Right Side

[Jim Nobles]

Heat on the front left side is fine, the right side is blowing cold, what could this be

 

[Jim Nobles]

It is a 2019 Ram Classic

 

[crash68]

If you have ruled out a dual zone blend door problem if the the truck the dual zone Auto Climate control. Chances are the heater core is plugged up, it's a common symptom. Some people have luck with back flushing the heater core.

 

[Jim Nobles]

Well I don't know anything about the dual zone blend door problem

 

[Flip-er]

Awhile back, I had NO heat out of dash vents on drivers side, plenty on passenger side,
had heater core flushed and now have heat all over, I would check heater core first.
I dont have duel zone