2011 Chevrolet Express 1500 Cargo Owner's Manual - Page 213

Climate Controls 8-7 AUX (Auxiliary): Turn the fan knob on the front climate control panel to AUX to let rear seat passengers use the control panel in the rear seating area. This disables the front control panel. To return control to the front panel, move the fan knob out of AUX. 9 : Turns the system off. 9 (Fan Control): Turn clockwise Rear Climate Control Panel A. Fan Control B. Air Delivery Mode Control C. Temperature Control If the vehicle has a 343 cm (135 in) wheelbase, a rear control panel for this system is located in the second row behind the driver in the rear of the vehicle. The temperature, air delivery mode, and the fan speed can be adjusted for the rear seating area by a rear seat passenger. or counterclockwise to increase or decrease the fan speed in the rear-seating area. Temperature Control: Turn clockwise or counterclockwise to increase or decrease the temperature in the rear‐seating area. The air-conditioning system on the main climate control panel must be turned on to direct cooled air to the rear of the vehicle. If it is not on, then the temperature in the rear of the vehicle remains at cabin temperature.