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Manual Climate Control System
(if equipped)
Getting to Know Your Sierra/Sierra Denali
6
Entertainment Systems —
Radio/CD
Adjust settings for operation
• Adjust air delivery location with mode
control knob (“A” above).
• Adjust driver/passenger temperatures
with levers (“B” above).
• Set fan speed to desired setting
(“C” above).
Set the time on radios without a
Radio Data System (RDS)
• Press and hold the HR or MIN arrow
for two seconds.
• Press the HR (down) arrow until the
correct hour appears on the display.
• Press and hold the MIN (up) arrow
until the correct minute appears on
the display.
A
B
C
Additional Climate Control System
Functions (Automatic)
:
Recirculates interior air while in
Vent or Bi-Level position. Use this set-
ting to get maximum cooling from the air
conditioning system. To prevent
window fogging, Recirculation will not
operate in the Defog, Defrost or Floor
mode.
: Clears windshield and front side
windows of fog/frost.
: Clears rear glass of fog/frost and
activates heated outside rearview mir-
rors (if equipped).
See Section 3 of your Owner Manual.
Additional Climate Control System
Functions (Manual)
: Recirculates interior air while in
Vent or Bi-Level position. Use this set-
ting to get maximum cooling from the air
conditioning system. To prevent
window fogging, Recirculation will not
operate in the Defog, Defrost or Floor
mode.
: Clears windshield and front side
windows of fog/frost.
: Clears rear glass of fog/frost and
activates heated outside rearview mir-
rors (if equipped).
: Turns the air conditioning system
on and off. The button’s LED will
illuminate when the air conditioning
system is on.
See Section 3 of your Owner Manual.
Note: When the climate control system
is in the Off position ( ), outside air
will continue to enter the vehicle and will
be directed according to the mode
position selected. This is normal climate
control operation.
Note: To avoid window fogging on rainy
and humid days at temperatures above
freezing, run the air conditioner ( ).
Also, it is best to avoid the use of the
recirculation mode ( ) except for
short times to avoid exterior odors or
when maximum air conditioning per-
formance is needed.