2006 GMC Yukon Owner's Manual - Page 194

Rear Passenger Console Control To control the rear climate control from the rear passenger seat position, use the rear passenger console control. The driver overhead control fan knob must be set to the AUX position. %(Mode): Press this button to select the air delivery mode and AUTO mode. Choose AUTO if you want the system to automatically regulate the airflow. See "Auto Mode" later in this section for more information on using this feature. b (Temperature): Press this button up or down to increase or decrease the temperature setting. w9x(Fan): Press this button up or down to adjust the fan speed. Choose AUTO if you want the system to automatically choose the fan speed to maintain a selected temperature. See "Auto Mode" following for more information on using this feature. AUTO Mode When using the system in auto mode, find your comfort setting by placing the temperature control to 74°F (23°C) and allowing about 20 minutes for the system to regulate. Then adjust the temperature setting as necessary. If you choose full cold 60° F (15°C), the system will remain at the maximum cooling setting. If you choose full hot 90°F (32°C), the system will remain at the maximum heat setting. Rear Controls The rear seat controls have the following settings: O (On/Off): Press this button to turn the rear seat comfort controls on or off when the front overhead control is set to AUX. 3-34