Ok, I have the 2002 Dodge Ram 1500 with heater problems,

What is your question?

I have flushed it 3 times, it helps and seems be fine and then goes back to cold on the drivers side. When I run the hose through it , its perfectly clear and full strength flow. Sometimes when I'm driving it goes warm again, then back cold. Ive tried everything except pulling the dashboard. HELP !