Hi, new to the site and been reading about similar problems but nothing i could find exactly the same as the problem ive been having with my air system on my truck i have a 2010 dodge ram 1500 with the dual climate controls and recently had the issue occur thats caused my defrost to stop working and in addition to that the drivers side will blow what ever temp you have it set to without issue but the passenger side only blows hot air. Ive not heard any grinding or gurgling from the motor and havent torn any thing apart to look at it yet just looking for some insight as to where to start thanks in advance!