I've got a '07 chevy 4-door cew cab 4X4 and the a/c acts like it is freezing up cause it dont blow like it use to and then ice chunks will come out of the vents would this make it not blow on high either . myaybe I've lost some freon or something as anyboby else had this problem. thanks

 

This may be a long shot, but i think you got water in your cooling tubes. Because freon doesnt freeze solid. And if it would, man, it smells like hell. (Freon is what we call a Noble gas. And noble gas doesnt become solid).

 

Thanks but it dont smell