Chevrolet 2002 Venture Owner's Manual page 237

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
windows, operate the HVAC system in the outside
air mode.
For additional information, refer to "Recirculation"
earlier in this section.
-
fogging of the
Rear Window Defogger (If Equipped)
The system will turn off automatically after about
10 minutes of use. If you turn it on again, the defogger
will operate for about five minutes. You can also turn
the defogger off by turning off the ignition or by
pressing the button again.
Do not attach a temporary vehicle license across the
defogger grid on the rear window.
NOTICE:
Don't use a razor blade or something 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.
Press the REAR button
to warm the defogger grid
on the rear window and
to turn on the heated
outside rearview mirrors.
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