I already changed the inside/outside door everthing works also had the box out and cleaned put new heater and evap still low flow even on high I can hear the fan rrrhing so I took the fan out an put it on high it spins fast but air berly flowing out and also goes down like if you put your hand mid way cant fill any air you put your hand on the bottom you can fill little. can someone explain

 

Low flow both sides? If so maybe the main duct has something in it.

 

like i said already took the box out and clean it ill take the dash out next day im off to see if anything in their when on max i can fill a little hitting me but 1-3 can't even fill it hitting me

 

Sounds like you may have a slow door, or one that is not matching selected position. IE, you select front vents and it's blowing on the floor. My jeep does this. Maybe check this first before you pull the dash again.

 

everthing works fine when on the floor it only blow on the floor or put it on defrost its only blowing out at defrost its maybe me about the air I just think it should blow better because my grandad got 05 chevy his 2 like my max im still going to move the dash just to make sure nothing blogging any air