Hello,
Yes is does sounds like you have a defrost blend door actuator that is not working.
Here is a guide to help you see what you are in for when doing the job:
https://www.2carpros.com/articles/replace-blend-door-motor
Here is the locations of all the blend door actuators for reference (below).
Cheers, Ken
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Wednesday, February 28th, 2018 AT 11:06 AM