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Pontiac 1997 Grand Prix Owner's Manual page 169

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Ventilation Tips
Keep the hood and front air inlet free of ice, snow or
any other obstruction, such as leaves. The heater and
defroster will work far better, reducing the chance of
fogging the inside of your windows.
When you enter a vehicle in cold weather, adjust the
mode knob to FLOOR and the fan to the highest
speed for a few seconds 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.
Rear Window Defogger
Your comfort control system has a button to operate
your rear window defogger. The electronic comfort
control system has a button marked REAR. The
system with automatic temperature control has a button
marked R.DEF.
The rear window defogger uses a warming grid to
K ~ ~ O W
fog from the
rear window. Press the button
to turn the rear defogger on. It will turn itself off after
about ten minutes.
If you turn it on again, the rear 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 anything like a temporary vehicle license
or decal across the defogger grid.
NOTICE:
Don't use a razor blade or anything else sharp on
the inside of the rear window. If you do, you
could cut or damage the warming grid, and the
repairs wouldn't be covered by your warranty.
3-9

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Grandprix 1997