1993 Oldsmobile Silhouette Owner's Manual - Page 122
1993 Oldsmobile Silhouette Manual
Page 122 highlights
Comfort Controls & P d i o Systems c Flow-Through Wntilation System Ventilation Tips: Your vehicle's flow-through ventilation system supplies outside air into the vehicle when it is moving. Outside air wl also enter the vehicle when the il heater or the air conditioning fan is running. Keep the hood and frontair inlet free of ice, snow, or any other obstruction (such as leaves).The heater and defroster will work far better, reducing the chanceof fogging the insideof your windows. When you enter a vehicle in cold weather, turn the blowerfan to HIGH for a few moments before drivingoff. This helps clear the intake ducts of snow and moisture, and reducesthe chance of fogging the inside your of windows. Keep the area around the base the of center instrument panel console and the air path under the front seats clear of objects. This helpsa r to circulate i throughout your vehicle.