Kevinsaar32
Junior Member
I have 2017 6.4 tradesman. Only time I get somewhat heat is when it’s on face heats turned up fully and the it’s set to circulate. Heat doesn’t work on any other setting just blows lukewarm/cold. Replaced thermostat did a core flush made sure coolants good and that helped a bit but didn’t seem to fix the issue. Coolant gets up to temp no problem. Anyone else have this issue or know a fix?