Is the rear bench seat removable in a 200 Chevy Express hitop van?

No, the rear bench seat in a 2020 Chevy Express high-top van is not typically removable in the same way as some smaller vehicles. While some seats might have features allowing for easier folding or removal, it's not designed for simple, DIY removal and replacement. It's usually bolted or heavily secured to the floor. You would likely need specialized tools and potentially professional assistance to remove it.