Heating
Defogging and Defrosting
The heater works best if you keep your windows closed
while using it. On cold days, use the HEATER or
VENT/HEAT setting with the temperature knob in
the red area.
On cool, humid days, use DEFOG to keep the windshield
and side windows clear. Use DEFROST to remove fog
or ice from the windshield in extremely humid or cold
conditions. Use DEFROST with the temperature knob
toward the red area and the fan control turned all the
way to the right.
On cold days, approximately 32 F (-0 C) or lower, if
your vehicle is equipped with an automatic transmission,
you may experience differences in how the transmission
shifts until the engine is warm. This feature automatically
reduces the time it takes for the engine to reach normal
operating temperature and shortens the time it takes the
heater to reach full output.
Rear Window Defogger (If Equipped)
If you see lines running across the rear window, you
have a rear window defogger. The lines warm the glass.
To turn on the rear window
defogger, press this button
located next to the mode
control knob.
If you use the engine coolant heater before starting your
engine in cold weather, 20 F (-8 C) or lower, the
heating system will produce warmer air faster to heat the
passenger compartment.
The use of an engine coolant heater also reduces the
time it takes for the engine to reach normal operating
temperature. For more information, see “Engine Coolant
Heater” in the Index.
The rear window defogger will only work if the ignition
is in RUN. For best results, clear the window of as much
snow or ice as possible first.
3-12
| Categories | GMC Manuals, GMC Yukon Manuals |
|---|---|
| Model Year | 2001 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
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