Oldsmobile 2002 Silhouette - Manual (Page 209)

3-6
Heating
Move the temperature control toward the red area to
warm the air.
In the floor mode, 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 control 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
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
control 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 floor 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.