Pontiac 1997 Grand Am Owner's Manual page 131

Defrosting and Defogging
To defrost the windshield, turn all three control knobs to
the far right.
The DEFROST setting directs air through the defroster
vents located on top of the instrument panel.
To warm passengers while keeping the windows clean,
use BLEND.
To defog the side windows, turn the right control knob
to BI-LEVEL and the fan control knob to HIGH. Aim
the side vents toward the side windows. For increased
aifflow to the side vents, close the center vents.
Rear Window Defogger (If Equipped)
The rear window defogger
uses a warming grid to
remove fog from the rear
window. Press the defogger
switch. The indicator light
will glow.
If your vehicle is traveling under 45 rnph (70
km/h),
the rear window defogger will turn off automatically
after about 10 minutes of use. If your vehicle is
traveling over 45 mph (70 km/h), the defogger will
operate continuously. You can turn the defogger off by
turning off the ignition or pressing the switch again.
Do not attach a temporary vehicle license across the
defogger grid on the rear window.
I
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.
3-6