1998 Chevrolet Venture Owner's Manual - Page 227

Rear Air Vents To maximize airflow through the rear heater outlet, place theleft bucket seat in the second row in the forward position (see "Adjusting Rear Seats" in the Index). Ventilation System Your vehicle's flow-through ventilation system supplies outside air into the vehicle when it is moving. Outside air will also enter the vehicle when the fan is running. Your vehicle has air outlets that allow you to adjust the direction and amount of airflow inside the vehicle. Push the outletup or down to direct airflow to your preference. Increase or reduce the amount of airflow by opening and closing the louvers. Opening and closing the louvers will also direct airflow from side to side. The air-flow through the vents can be shutoff completely by turning the thumb-wheel next to each outlet all theway down. You can also stop outside air from enteringby turning the fan to OFF and pushing the RECIRC button. The vent behind the left rear seat is the cold air return vent. Be sure tokeep it free of obstructions. Please keep the area around the base of the center instrument panelconsole and between and under the front seatsfree of objects thatcould obstruct airflow to the rear. 3-8