How do you check the blend door on 2006 equinox?

To check the blend door on a 2006 Equinox, first, ensure the vehicle is off and locate the blend door actuator, usually found behind the dashboard near the heater core. Turn the ignition on and adjust the temperature settings to see if the actuator moves in response; you should hear a clicking sound if it’s functioning. If there’s no movement or sound, the actuator may be faulty and should be inspected or replaced. Additionally, check for any obstructions in the blend door itself if accessible.