My A/C is blowing hot air on the drivers side, cold air on the passenger side and rear. What could be the problem?

 

Use recirculation mode, see if it helps.

 

What is recirculation mode?

 

Look for a Symbol that looks like this in ur A/C control *****.



This function circulates Air from inside the car instead of from outside, so u get better A/C performance.
On a real hot day, it is normal for some cars to do what u described. Because the A/C has it's cooling limit, and the left side vent if farther from the Cooling panel, which is located behind ur glove box.
It is like ur house, the Vent farthest from the HVAC unit is weaker than the one closes to it.

But if you r getting warm air even in recirculation mode, then u might have a problem.

 

I still get warm air when I use this button. What do you think the problem is?

 

Is ur car a Dual Zone Climate Control? single Zone base model? or Automatic climate control?
Got a feeling u have blend door issue. that would be A LOT of work.

 

It is a Dual Zone Climate Control. What would I need to do to fix it?

 

Well, If all u need is the Motor, you can get to it behind the glove box.
But if the atual blend door broke off, then u'll have to remove the whole dash to get to it.

U said Driver side A/C is not cold, but if u turn the **** all the way to hot, does it get heat?

 

without Fancy Scanners, All you can do is Pull the carpet behind the glove box down, on the left side, you will see bunch of Door motor like this


1 - WIRE HARNESS CONNECTOR 2 - MODE DOOR ACTUATOR 3 - SCREW (2) 4 - DRIVER BLEND DOOR ACTUATOR (DUAL-ZONE) 5 - HEATER CORE 6 - BLEND DOOR ACTUATOR (SINGLE ZONE) OR PASSENGER BLEND DOOR ACTUATOR (DUAL-ZONE)


Unscrew #4 motor, and pull it out, rotate the Temp Control dial on ur car, see if the Motor move. (MAKE SURE you are in Full Cold position when u remove the motor, and go BACK to full cold position b4 u reinstall the motor, so u get the motor in exact same spot assuming the Motor does Move.)