These are the first things that fail on a Chevy over time - the plastic interior parts. You tried to remove them. Big mistake. If you try to do that, they break. Then it looks ugly. You aren't supposed to remove any plastic parts. You are supposed to be motivated to buy a new Chevy because of that.
You should see the steering wheel on my '88 Chevy Caprice. The phony chromed plastic strip embedded in the steering wheel cracked and fell apart decades ago. I don't miss having it. And I won't dishearten you by saying what an old plastic dashboard looks like on a 25 year old Chevy. It's also cracked, but the car still runs, actually quite well. Ultimately that's all that matters. (Especially if you own a car much longer than Chevy ever expected you to keep it...)