2014 Chevrolet Express 2500 Cargo Owner Manual - Page 186

8-4 Climate Controls Rear Heating System If equipped, the rear heating system lets you adjust the amount of air flowing into the rear of the vehicle, from the front seating area. This feature works with the main climate control system in the vehicle. 9 (Fan): Turn the thumbwheel up or down to increase or decrease the amount of heated air sent to the rear seating area. This position supplies the most amount of heat to the rear seating area. Rear Climate Control System If equipped with a rear heating and air conditioning system, it controls the temperature, fan speed, and air delivery for the rear seat passengers only. The front climate control panel is in the overhead console between the driver and front passenger. Q (High): c (Medium): This position supplies half the amount of heat to the rear seating area. R (Low): This position supplies the least amount of heat to the rear seating area. 9 (Off): This turns the rear heating system off. AUX: The thumbwheel for this system is in the instrument panel switchbank below the audio system.