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Heat on drivers side, cold on passenger and cold defrost.
3rd Gen Ram Tech2002-2008 Rams: This section is for TECHNICAL discussions only, that involve the 2002 through 2008 Rams Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.
If its just somewhat warm on drivers side but cooler as you get to passenger side then I would try flushing the heater core first. If it was working fine and then suddenly stopped then I would suspect blend door failure.
I did the heater core flush and it did nothing. I’m guessing the blend doors are broke in the middle so only
one side operates because when I adjust the team, I can see the aviator moving.
