Pontiac 1999 Automobile User Manual


 
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Heating
On cold days, use FLOOR with the temperature knob all
the way in the red area. The system will bring in outside
air, heat it and send it to the floor ducts.
Your vehicle has heat ducts that are directed toward
the rear seat. Keep the area under the front seats clear
of obstructions so the heated air can reach the rear
seat passengers.
If your vehicle has an engine coolant heater, you can use
it to help your system provide warm air faster when it’s
cold outside (0 F (
-18 C) or lower). An engine coolant
heater warms the coolant your engine and heating
system use to provide heat. See “Engine Coolant
Heater” in the Index.
Defogging and Defrosting
Your system has two settings for clearing the front and
side windows. To defrost the windows quickly, use
DEFROST with the temperature knob all the way in the
red area. To warm passengers while keeping the
windows clean, use DEFOG.
To defog the side windows, set the right control to
BI
-LEVEL and the fan control to the highest setting.
To defog the side windows while using the air
conditioner, set the right control to BI
-LEVEL, the fan
control to the highest setting, and press the A/C button.
For both systems, aim the side vents toward the side
windows. For increased airflow to the side vents, close
the center vents.
Rear Window Defogger (If Equipped)
The rear window defogger
uses a warming grid to
remove fog from the
rear window.
Press the button to turn
the defogger on. It will
turn itself off after about
10 minutes.
If you turn it on again, the defogger will only run for
about five minutes before turning off. You can also turn
it off by pressing the button again.
Do not attach a temporary vehicle license across the
defogger grid on the rear window.