On the lower trim piece you have to remove the ashtray and there 2 screws to remove that are on the top of the lower piecel! Once those are unscrewed you can pull it out and there are 2 connections to remove(Lighter and Ashtray light)
The upper piece you need to remove the knobs on the climate controls and it just pulls out and then there are a few connections to undo(Defroster, Hazard lights, and Clock connections) once those are unplugged you can set it aside.
I just installed my new headunit so I remember pretty well

I hope this helps!