I am not sure what you call it, whenther damper or whatever, but air will only go to vents on dash and feet. Will not go to defrost which will need real soon,

I am looking to find out what it takes to fix or replace.

Thank you in advance for any help,

 

Welcome to the forum. The 07 is cable actuated unlike most newer versions,2010-up, which are servo driven. I would check the cable, the actual control that you turn an then the blend door at the other end of the cable. Something could be broken or just may have come