2009 GMC ENVOY air conditioning

Vehicle Symbol Chart
Here are some additional symbols that may be found on
the vehicle and what they mean. For more information
on the symbol, refer to the index.
0:Adjustable Pedals
9:Airbag Readiness Light
#:Air Conditioning
!:Antilock Brake System (ABS)
g:Audio Steering Wheel Controls or OnStar®
$:Brake System Warning Light
":Charging System
I:Cruise Control
B:Engine Coolant Temperature
O:Exterior Lamps
#:Fog Lamps
.:Fuel Gage
+:Fuses
i:Headlamp High/Low-Beam Changer
j:LATCH System Child Restraints
*:Malfunction Indicator Lamp
::Oil Pressure
}:Power
/:Remote Vehicle Start
>:Safety Belt Reminders
7:Tire Pressure Monitor
F:Traction Control
M:Windshield Washer Fluid
iv

Ashtray(s) and Cigarette Lighter
For vehicles with this feature, the ashtray is removable
and ts into the front cupholder.
Notice:If papers, pins, or other ammable items
are put in the ashtray, hot cigarettes or other
smoking materials could ignite them and possibly
damage the vehicle. Never put ammable items
in the ashtray.
To remove the ashtray, pull the covered bin out of the
cupholder.
To use the lighter, press it in all the way, and let go.
When it is ready, it will pop back out by itself.
Notice:Holding a cigarette lighter in while it is
heating will not allow the lighter to back away from
the heating element when it is hot. Damage from
overheating may occur to the lighter or heating
element, or a fuse could be blown. Do not hold a
cigarette lighter in while it is heating. Do not use
equipment exceeding maximum amperage rating of
20 amperes.
Climate Controls
Dual Climate Control System
With this system the heating, cooling, and ventilation
can be controlled for the vehicle.
A. Fan Control
B. Driver and Passenger
Temperature Controls
C. Air Delivery Mode
ControlD. Recirculation
E. Air Conditioning
F. Rear Window
Defogger
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Driver’s Side Temperature Lever:Raise or lower the
lever to increase or decrease the temperature on
the driver’s side of the vehicle.
Passenger Side Temperature Lever:Raise or lower
the lever to increase or decrease the temperature on the
passenger side of the vehicle. This right lever also
adjusts the temperature to the rear seat outlets.
When the temperature outside is 0°F (-18°C) or lower,
use the engine coolant heater, if the vehicle has one,
to provide warmer air faster to the vehicle.
9(Fan Control):Turn clockwise or counterclockwise
to increase or decrease the fan speed. If the knob
is in off mode, outside air still enters the vehicle, and is
directed based on the position of the air delivery
mode knob. The temperature can still be adjusted using
the temperature knob.
Air Delivery Mode Control:Turn clockwise or
counterclockwise to change the airow direction inside
the vehicle.To change the current mode, select one of the following:
H(Vent):Air is directed to the instrument panel
outlets.
)(Bi-Level):Air is divided between the instrument
panel and oor outlets. Some air is directed toward the
windshield and the side window outlets. Cooler air is
directed to the upper vents and warmer air to the oor
outlets.
6(Floor):Air is directed to the oor outlets, with
some air directed to the windshield and the side window
outlets. The recirculation button cannot be selected
while in oor mode.
-(Defog):This mode clears the windows of fog or
moisture. Air is directed to the oor, windshield and side
window outlets. The recirculation button cannot be
selected while in defog mode.
1(Defrost):This mode clears the windows of fog or
frost more quickly. Air is directed to the windshield
and the side window outlets, with some air directed to
the oor outlets. The air conditioning compressor
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may run to dehumidify the air to prevent window
fogging. The recirculation button cannot be selected
while in defrost mode.
Do not drive the vehicle until all the windows are clear.
#(Air Conditioning):Press to turn the air-conditioning
system on or off. An indicator light comes on and the
system begins to cool and dehumidify the air inside of the
vehicle. You may notice a slight change in engine
performance when the air conditioning compressor shuts
off and turns on again. This is normal.
@(Recirculation):Press to turn the recirculation
mode on. An indicator light comes to show that
the recirculation is on. This mode recirculates and helps
to quickly cool the air inside the vehicle. It can be
used to help prevent outside air and odors from
entering the vehicle. The air conditioning compressor
will also come on when this mode is activated. While in
recirculation mode, the windows may fog when the
weather is cold and damp. To clear the fog, select either
the defog or defrost mode and increase fan speed.
Rear Window Defogger
The rear window defogger uses a warming grid to
remove fog from the rear window.
<(Rear):Press to turn the rear window defogger on
or off. An indicator light in the button comes on to
show that the rear window defogger is on. The rear
window defogger automatically turns off approximately
ten minutes after the button is pressed.
For vehicles with heated mirrors, they turn on when the
rear window defogger button is pressed.
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.
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Dual Automatic Climate Control
System
With this system the heating, cooling and ventilation can
be controlled on the vehicle. When the vehicle is rst
started and the climate control system is on, or if
the climate control system has been turned on, the
display shows the driver’s temperature setting for
ve seconds. Then it shows the outside temperature.
A. Driver and Passenger
Side Temperature
Controls
B. Fan Control
C. Display
D. AUTO
E. Power ButtonF. Recirculation
G. Air Conditioning
H. Defrost
I. Air Delivery Mode
Control
J. Rear Window
Defogger
Outside Air Temperature Display
A new outside temperature reading is displayed if
the vehicle has been off for more than three hours.
If the vehicle has been off for less than three hours,
the old temperature reading may be displayed because
underhood heat is affecting the true outside temperature.
Underhood heat can also affect the outside temperature
while the engine is running. It may also take several
minutes of driving before the display updates to
the actual outside temperature.
Automatic Operation
AUTO (Automatic):When automatic operation is
active, the system controls the air delivery mode,
fan speed, and temperature inside the vehicle.
Use the steps below to place the entire system in
automatic mode:
1. Press AUTO.
When AUTO is selected, the air conditioning
and air inlet are automatically controlled. The air
conditioning compressor will run continuously when
the outside temperature is over approximately
40°F (4°C). The air inlet will normally be set
to outside air. If it is hot outside, the air inlet
automatically changes to recirculate inside air to
help quickly cool down the vehicle.
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To change the current air delivery mode, select one of
the following:
H(Vent):Air is directed to the instrument panel outlets.
)(Bi-Level):Air is divided between the instrument
panel and oor outlets. Some air is directed toward the
windshield and side window outlets. Cooler air is
directed to the upper outlets and warmer air to the oor
outlets.
6(Floor):Air is directed to the oor outlets. Some air
also comes out of the defroster and side window
outlets. The recirculation button cannot be selected in
oor mode.
-(Defog):This mode clears the windows of fog or
moisture. Air is directed to the oor and windshield
outlets.
0(Front Defrost):Press the front defrost button to
clear the windows of fog or frost more quickly. The
system automatically controls the fan speed if defrost is
selected from AUTO mode. If the outside temperature
is 40°F (4°C) or warmer, the air conditioning compressor
runs automatically to help dehumidify the air and dry
the windshield.
Do not drive the vehicle until all the windows are clear.
#A/C (Air Conditioning):Press to turn the air
conditioning system on or off. When the system is on,
the system automatically begins to cool and dehumidify
the air inside of the vehicle. The air conditioning
symbol appears on the display when the air conditioning
is on and turns off when the air conditioning is off.
If the air conditioning is turned off while in front defrost
or defog mode, the air conditioning symbol turns off,
however, the A/C compressor remains on to help
de-humidify the air inside the vehicle. If one of the other
modes is selected, the compressor will then turn the
A/C off until it is selected again or the AUTO button is
pressed.
To avoid fogging the inside glass on rainy and humid
days at a temperature above freezing, press the
air conditioning button to run the A/C compressor.
Also it is best to avoid the use of the recirculation mode
except when maximum air conditioning performance
is needed or for short times to avoid exterior odors.
You may notice a slight change in engine performance
when the air-conditioning compressor shuts off and
turns on again. This is normal.
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@(Recirculation):Press to turn the recirculation
mode on or off. An indicator light comes on to show that
recirculation is on. This mode recirculates and helps
to quickly cool the air inside the vehicle. It can be used
to help prevent outside air and odors from entering
the vehicle. Recirculation mode can be used with vent
and bi-level modes, but it cannot be used with oor,
defog or defrost modes.
If recirculation mode is selected with oor, defog, or
defrost modes, the indicator ashes three times
and turns off to indicate the selection is not available.
The air conditioning compressor may also run while
in recirculation mode. This is normal and helps to
prevent window fogging.
If the weather is cold and damp, the system may cause
the windows to fog while using recirculation mode.
If the windows do start to fog, select defog or defrost
mode and increase fan speed.
Recirculation mode, if selected, will be cleared when the
engine is turned off.Rear Window Defogger
The rear window defogger uses a warming grid to
remove fog from the rear window.
<(Rear):Press to turn the rear window defogger
on or off.
An indicator light comes on to show that the rear
window defogger is on.
The rear window defogger will turn off approximately
10 minutes after the button is pressed. If additional
warming time is needed, press the button again.
The heated mirrors will also come on when the rear
window defogger is turned on. SeeOutside Heated
Mirrors on page 2-42.
Notice:Do not use a razor blade or sharp object
to clear the inside rear window. Do not adhere
anything to the defogger grid lines in the rear glass.
These actions may damage the rear defogger.
Repairs would not be covered by your warranty.
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If No Steam Is Coming From The
Engine Compartment
If an engine overheat warning is displayed but no steam
can be seen or heard, the problem may not be too
serious. Sometimes the engine can get a little too hot
when the vehicle:
Climbs a long hill on a hot day.
Stops after high-speed driving.
Idles for long periods in traffic.
Tows a trailer.
If the overheat warning is displayed with no sign of steam:
1. Turn the air conditioning off.
2. Turn the heater on to the highest temperature and
to the highest fan speed. Open the windows as
necessary.
3. In heavy traffic, let the engine idle in N (Neutral)
while stopped. If it is safe to do so, pull off the
road, shift to P (Park) or N (Neutral) and let
the engine idle.
If the temperature overheat gage is no longer in the
overheat zone or an overheat warning no longer
displays, the vehicle can be driven. Continue to drivethe vehicle slow for about 10 minutes. Keep a safe
vehicle distance from the car in front of you. If the
warning does not come back on, continue to drive
normally.
If the warning continues, pull over, stop, and park the
vehicle right away.
If there is no sign of steam, idle the engine for three
minutes while parked. If the warning is still displayed,
turn off the engine until it cools down.Engine Fan Noise
The vehicle has a clutched engine cooling fan. When the
clutch is engaged, the fan spins faster to provide more air
to cool the engine. In most everyday driving conditions
the clutch is not engaged. This improves fuel economy
and reduces fan noise. Under heavy vehicle loading,
trailer towing, and/or high outside temperatures, the fan
speed increases when the clutch engages so you may
hear an increase in fan noise. This is normal and should
not be mistaken as the transmission slipping or making
extra shifts. It is merely the cooling system functioning
properly. The fan will slow down when additional cooling
is not required and the clutch disengages.
You may also hear this fan noise when the engine is
started. The sound will go away as the fan clutch
disengages.
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