GMC Yukon Blend Door Actuator Replace/Remove

I Have Replaced And Calibrated The Blend Door Under The Dash, Passenger Side. Rear Hvac Still Only Blows Hot Air Through The Lower Vents....

I Have An Auto Hvac System. My Mode Door Actuator Does Not Seem To Be Working (no Matter What Position The Digital Display Indicates...

I've Found Multiple Different Ways From Looking Online, But None Of Them Have Worked.

The Front Hvac In My Vehicle Only Blows Cold Air. I've Replaced The Actuator Under The Dash On The Passenger Side Of The Center Console...