There are 4 screws that attach the HVAC control module to the trim plate. The trim plate is not screwed in place, but rather uses clips to attach it to the dash.
If you look at the first two pics below, they explain how to remove the trim plate (very vague, so let me know if you have questions). Pics 3 and 4 are for the replacement of the module. You aren't replacing it, but I included this so you can see where the screws are located.
Let me know if this helps or if you have other questions.
See pics below.
Images (Click to make bigger)
Thursday, September 9th, 2021 AT 6:04 PM