Where is the unit that opens and closes heater blend door on a 1997 Ford F-150?

The heater blend door actuator on a 1997 Ford F-150 is located inside the dashboard, behind the glove box. To access it, you'll likely need to remove the glove box itself. It's a relatively common location for this component in many vehicles. However, the exact position can vary slightly depending on the trim level and specific options of your truck. You may find helpful diagrams and repair videos specific to a 1997 Ford F-150 by searching online using the year, make, and model, along with "heater blend door actuator location."