1991 suburban no defrost to windshield

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G-597980

What should I look for to get air to blow on defrost settin. It just works blowing straight and down. Thanks much
 
A possible broken blend door actuator
 
Thanks for the reply. Is that easy to locate and replace. Thanks again
 
There are a number of YouTube videos out there, watch them and determine if it is a DIY.
 
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