GMC LYRIQ 2023 Owner's Manual page 189

188 Climate Controls
Press AUTO to return to
automatic operation and the
air conditioner runs as needed.
: Press to alternate
between recirculating air
inside the vehicle or pulling in
outside air. The indicator light
on the button is lit when
recirculation mode is active.
This helps to quickly cool the
air inside the vehicle and
reduce the entry of outside air
and odors.
Pressing this button cancels
automatic recirculation. Press
AUTO to return to automatic
operation; recirculation runs
automatically as needed.
Manual recirculation mode is
not available when in Defrost.
The climate control system
uses a sensor to automatically
detect high humidity inside the
vehicle. When high humidity is
detected, the climate control
system may adjust to outside
air supply, turn on the heater
and air conditioner, increase
fan and temperature, and
direct more air to the
windshield. When the climate
control system does not
detect possible window
fogging, it returns to normal
operation. To turn Auto Defog
off or on, select Settings >
Climate and Air Quality > Auto
Defog > Select ON or OFF.
If Auto Defog is turned off,
or fogging does not clear
quickly enough, select
more quickly clear the
windshield.
Rear Window Defogger
: Press to turn the rear
window defogger on or off. An
indicator light on the button
comes on to show that the
rear window defogger is on.
The rear window defogger
only works when the vehicle is
on. If the outside temperature
is below 7°C (45°F), and the
rear window defogger is on,
the area of the windshield
beneath the windshield wipers
will warm up to melt
accumulated snow or ice.
The rear window defogger can
be set to automatic operation.
When Auto Rear Defog is
selected, the rear window
defogger turns on
automatically when the vehicle
is first started in cold weather
and turns off when the vehicle
is warmed. To turn Auto Rear
to
Defog off or on, select
Settings > Climate and Air
Quality > Auto Rear Defog >
Select ON or OFF.
The heated outside rearview
mirrors turn on when the rear
window defogger button is on
and help to clear fog or frost
from the surface of the
mirrors.
Caution
Do not try to clear frost or
other material from the
inside of the front
windshield and rear window
(Continued)