I just bought this vehicle a couple of days ago. Owner said when they parked it two years ago the ac for front and rear all worked properly. The front vents are blowing air, but its not very cold, sometimes it's just hot air especially when idoling. The rear hvac is not blowing at all. All fuses have been checked and are functioning.

 

Is the ac working, in other words compressor turning ect.? It could be a blend door actuator. Need to know if the ac is indeed operating first.

 

I tried to reset the hvac. Not sure I did it properly. But now my front passenger is blowing cold. Driver side blows hot. Rear hvac is doing nothing. Ext on control panel reads ext 50. When u press the a.c. button on the bottom it flashes a.c. off.