Where is the blend door on a 1996 Chevy Tahoe?

The blend door on a 1996 Chevy Tahoe is located inside the dashboard, within the HVAC (Heating, Ventilation, and Air Conditioning) system housing. It's not directly accessible without removing parts of the dash. You won't see it just by looking at the vents or under the hood. To access it, you'd need to disassemble portions of the dashboard, a job requiring significant mechanical aptitude and the right tools.