To find out how to fold down the back seats of *your* Chevy, you need to:
1. Identify your Chevy's year and model: (e.g., 2023 Chevy Silverado 1500, 2018 Chevy Malibu, 2021 Chevy Tahoe)
2. Consult your owner's manual: This is the definitive source. It will have diagrams and instructions specific to your vehicle. You can often find a digital version of your owner's manual on the Chevy website by entering your VIN.
3. Search online: Search "[Your Chevy Year and Model] fold down rear seats" on Google, YouTube, or a similar search engine. Videos are often very helpful.
Without knowing the specific Chevy model and year, I cannot give you precise instructions.