The configurator for the 2021 Trailblazer is up on Chevy's website! From what I've seen of it so far it's well laid out and easy to navigate.
www.chevrolet.com
Build Your Own: 2021 Cars, Trucks, Crossovers and SUVs
Build your own 2021 Chevrolet and choose from a range of trims, colors, and options to build your own Cars, Trucks, Crossover SUVs and Vans