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The rear window defogger turns off approximately
15 minutes after the button is pressed. If turned on
again, the defogger only runs for approximately seven
minutes before turning off.
If the vehicle speed is greater than 80 km/h (50 mph)
and the rear defogger is on, it remains on as long as the
speed is greater than 80 km/h (50 mph). The defogger
can also be turned off by turning off the engine.
For vehicles with the remote start feature, the rear
defogger automatically turns on if it is cold outside.
When the vehicle transitions out of the remote start
mode, the rear defogger turns off. See Remote Keyless
Entry (RKE) System Operation on page 3‑4
Notice: Do not use anything sharp on the inside of
the rear window. If you do, you could cut or damage
the warming grid, and the repairs would not be
covered by the vehicle warranty. Do not attach a
temporary vehicle license, tape, a decal or anything
similar to the defogger grid.
Outlet Adjustment
Turn the outlets and move the outlet vanes to change
the direction of the airflow and to open and close the
outlets.
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 the 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 the vehicle
more effectively.
Passenger Compartment Air Filter
The filter removes dust and pollen from the air which is
drawn into the vehicle. Airflow reduction is an indication
that the filter needs to be replaced.
The filter should be replaced as part of routine
scheduled maintenance. See Scheduled Maintenance
on page 7‑3
for replacement intervals. To find out
what type of filter to use, see Maintenance
Replacement Parts on page 7‑12.
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