heater on 2005 Chevrolet Monte Carlo

I just bought this car yesterday and on the way home it was cold so turn on the heater and drivers side blows cold but passenger side hot. I had both sides of heater control up all the way in red. help one cold driver.

Asked by for the 2005 Chevrolet Monte Carlo
There are a few reasons why this could happen, one being temperature blend doors in the dash not opening correctly. A diagnosis is in order to determine the fault of the dual climate control system.

Good luck and Happy Thanksgiving!