GMC 2005 Savana - Manual (Page 134)

Rear Window Defogger
Some vehicles may have a rear window defogger.
<
R. DEF (Rear Defrost): Press this button to turn
the rear window defogger on or off. Be sure to clear
as much snow from the window as possible.
The rear window defogger uses a warming grid to
remove fog or frost from the rear window and will only
work when the ignition is RUN.
The rear window defogger will turn off several minutes
after the button is pressed. If turned on again, the
defogger will run for several more minutes before turning
off. The defogger can also be turned off by pressing
the button again or by turning off the engine.
Notice: Using a razor blade or sharp object to clear
the inside rear window may damage the rear
window defogger. Repairs would not be covered by
your warranty. Do not clear the inside of the rear
window with sharp objects.
Outlet Adjustment
Use the outlets located near the center and on the sides
of the instrument panel to change the direction of
airflow.
Operation Tips
• Clear away any ice, snow or leaves from the air
inlets at the base of the windshield that may
block the flow of air into your vehicle.
• Use of non-GM approved hood deflectors may
adversely affect the performance of the system.
• Keep the path under the front seats clear of objects
to help circulate the air inside of your vehicle more
effectively.
3-20