1993 Oldsmobile Bravada Owner's Manual - Page 107

Flow-Through Ventilation aystem Ventilation Tips 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 heater or the air conditioning fan is running. lamaqe the warming grid, Keep the hood and front air inlet free of ice, snow, or any other obstruction (such as leaves). The heater and defroster will work far better, reducing the chance of fogging the inside of your windows. When you enter a vehicle in cold weather, slide the hnction lever to HTR and turn the blower fan to HI for a few moments before driving off. This helps clear the intake ducts of snow and moisture, and reduces the chance of fogging the inside of your windows. Keep the air path under the front seats and console clear of objects. This helps air to circulate throughout your vehicle.