Oldsmobile 2001 Silhouette - Manual (Page 219)

3-8
Heating
Move the temperature lever up (toward the red area)
to warm the air.
In the LOWER setting, outside air will be brought in
and sent through the floor outlets. The heater works
best if you keep your windows closed while using it.
The BI - LEVEL setting is designed for use on sunny
days when the air is only moderately warm or cool.
On days like these, the sun may adequately warm your
upper body, but your lower body may not be warm
enough. For the best results, move the temperature knob
to the middle position, and then adjust it for comfort.
Your vehicle has a computer controlled transaxle
designed to warm up the engine faster when the outside
temperature is 35
_F (2_C) or colder. You may notice
that the transaxle will shift at a higher vehicle speed until
the engine is warmed up. This is a normal condition
designed to provide heat to the passenger’s compartment
and defrost the windows more quickly.
If you have the optional engine coolant heater and use
it during cold weather, 0
_F ( - 18
_C) or lower, your
heating system will provide heat more quickly because
the engine coolant is already warmed. See “Engine
Coolant Heater” in the Index.
Defogging and Defrosting
To rapidly defrost the windshield, move the temperature
knob all the way up (to the red area) and turn the mode
knob to DEFROST. Adjust the fan to the highest speed.
To keep the windshield clear and bring in heated air through
the heater ducts, turn the mode knob to DEFOG.
When the temperature outside is above freezing, the
air conditioner compressor will run in these settings to
help remove moisture from the air.
Your vehicle is equipped with side window defogger
vents located on the top of the instrument panel.
For additional side window defogging, turn the mode
knob to the BI
- LEVEL setting and adjust the fan to
the highest speed. Aim the side vents on the instrument
panel toward the side windows. For increased airflow to
the side vents, close the center vents.
Operating the HVAC system in the RECIRCULATION
mode may cause fogging of the vehicle’s windows when
the weather is cold and damp. To clear the fog, switch
the HVAC system to either the DEFOG or DEFROST
mode and increase the fan speed. To avoid re
- fogging
of the windows, operate the HVAC system in the
OUTSIDE AIR mode.
For additional information, refer to “RECIRCULATION”
earlier in this section.