2002 GMC Savana Van Owner's Manual - Page 144

Rear Heater (Without Air Conditioning) (If Equipped) If you have a rear heater (without rear air conditioning), the thumbwheel for this feature is located on the instrument panel. Rear Air Conditioning and Rear Heater (If Equipped) If your vehicle has a rear air conditioning and rear heater system combination, controls are provided to regulate the temperature, location and speed of the airflow. To increase and decrease the flow of heated air to the rear floor vents, turn the thumbwheel marked HEAT to the desired fan speed. The thumbwheel has three positions. To increase the flow of heated air, turn the thumbwheel toward HIGH. To turn the fan off, turn the thumbwheel to OFF. Front Passenger Control To adjust the air temperature, turn the temperature knob on the right side of the control panel. 3-5