My truck is blowing great heat, on passenger side, but luke warm on driver side ? (When I rev it up around 2 grand rpms it blows great but at idle it goes back to just luke warm on driver side) I have flushed, the heater core, reset actuators. Checked thermostat, and checked heater core for leaks, and heater core isn’t leaking. Hoses are heating up good, but still can’t figure it out any ideas? I have a 2 month old, that I have to take to drs appointments, and need heat working properly, in these frigid temps. I took the truck, to service department, they ran the diagnostics on it, and said that everything was working, like it’s supposed to. Just a 3 degree temp difference in the passenger side to driver side. But I’m still getting luke warm air and half speed on driver side compared to passenger side. They say it’s normal which I’ve owned several rams and never known this issue to be normal.
