Pontiac 2004 GTO - Manual (Page 119)

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(Defog): This mode directs the air to the windshield
and to the floor outlets. When you select this mode,
the system turns off recirculation automatically.
The recirculation mode cannot be selected while in the
defog mode. Do not drive the vehicle until all the
windows are clear.
To help clear the side windows quickly while using air
conditioning, do the following:
1. Select the bi-level mode.
2. Select the highest fan speed.
3. Select A/C.
4. Select the temperature.
1
(Defrost): This mode directs the air to the
windshield. In this mode, the system will automatically
force outside air into your vehicle and run the
air-conditioning compressor. Recirculation cannot be
selected while in the defrost mode.
To help clear the windshield quickly, do the following:
1. Select the defrost mode.
2. Select the highest temperature.
3. Select the highest fan speed.
Rear Window Defogger
The rear window defogger uses a warming grid to
remove fog or frost from the rear window.
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(Rear Defogger): Press this button on the right
dial to turn the rear window defogger on or off. An
indicator light in the button will come on to let your know
that the rear window defogger is activated. Be sure to
clear as much snow from the rear window as possible.
The rear window defogger will turn off about 15 minutes
after the button is pressed. The defogger can also
be turned off by pressing the button again or by turning
off the engine.
Notice: Don’t use anything 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. Do not attach a temporary
vehicle license, tape, a decal or anything similar
to the defogger grid.
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