I have a 2006 T6. When i click on the defrost no or little air comes out. The AC and heat work great on all other vents but no air comes out the defrost. suggestions?

 

You probably have a failed flap door motor. Have someone check this with a scan tool. They can manually operate the doors by command with the tool. They can also see codes for the system. A generic OBDII scan tool won't read the HVAC system.