1998 GMC Safari Owner's Manual - Page 159

If you have rear heating or rear air conditioning, you will have adjustable vents in the rear the vehicle to of help direct the airflow. The rear air conditioning vents are locatedin the headliner at the rear of the vehicle. The rear heating vents are located next to the second and third seat on the driver's side of the vehicle, near th floor. You can move the vents direct the flowof air, to or close the vents altogether. When close a vent, it you will increase the flow air coming outof any vents that of are open. Ventilation Tips 0 Your vehicle has air vents near the center and on the sides of the instrument panel that allow you to adjust the direction and the amount airflow inside the vehicle. of Move the dialon the vent up or down to direct airflow to your preference. Increase or reduce the amount of airflow by opening and closing the louvers. The vents rotate to direct the airflow from side to side. When you close a vent, will increase the flow air it of coming out of any vents that are open. Keep the hood and front air inlet of ice, snow or free any other obstruction (such leaves). The heater as and defroster will work better, reducing the far chance of fogging the inside your windows. of 0 When you enter a vehicle cold weather, turn the in blower fan to HIGH 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 clear of objects. This helps air to circulate throughout your vehicle. 0 3-7