I believe you are referring to the blend air door. If you take your time, you should be fine. Plus, if you have questions, I'll try my best to help you through the process.
To get you started, here is a link that shows the general procedure for the actuator replacement:
If you look at the attachments below, I included directions and pictures specific to your vehicle for replacement. Give it a try and let me know how it turns out or if you need help.
See pics below
Images (Click to enlarge)
Wednesday, March 31st, 2021 AT 8:34 PM