when i trun a/c on drivers side blows cold, but passenger side blows cool but not cold it takes at 20-30 minutes before it gets cold any ideas?

Some disparity is normal, but too much could be the blend door??

There is a lot of information about this out there. Many probabilities, blend door, low freon, heat from the heater core. I would probably get the freon checked, then look at blend doors. --- I am here: http://tapatalk.com/map.php?jn5smv 2003 Ram with gauges and a Smarty! Not much more. Sent from my iPhone using Tapatalk

I too suffer from these symtoms. I'm in the process of fixing the issue. I will keep you posted on my findings.