air condition GMC ENVOY DENALI 2007 Owners Manual

Safety Belt Pretensioners
Your vehicle has safety belt pretensioners for the
driver and right front passenger. Although you
cannot see them, they are part of the safety belt
assembly. They help tighten the safety belts
in a moderate to severe frontal or near frontal
crash if the threshold conditions for pretensioner
activation are met. And, if your vehicle has
side impact rollover airbags, safety belt
pretensioners can help tighten the safety belts
in a side crash or a rollover event.
Pretensioners work only once. If they activate
in a crash, you will need to get new ones,
and probably other new parts for your safety belt
system. SeeReplacing Restraint System Parts
After a Crash on page 91.
Safety Belt Extender
If the vehicle’s safety belt will fasten around you,
you should use it.
But if a safety belt is not long enough, your dealer
will order you an extender. When you go in to
order it, take the heaviest coat you will wear,
so the extender will be long enough for you.
To help avoid personal injury, do not let someone
else use it, and use it only for the seat it is
made to t. The extender has been designed for
adults. Never use it for securing child seats.
To wear it, just attach it to the regular safety belt.
For more information see the instruction sheet
that comes with the extender.
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In any particular crash, no one can say whether
an airbag should have inated simply because
of the damage to a vehicle or because of what the
repair costs were. For frontal airbags, ination is
determined by what the vehicle hits, the angle
of the impact, and how quickly the vehicle slows
down. For roof-mounted airbags, ination is
determined by the location and severity of the
impact.
The airbag system is designed to work properly
under a wide range of conditions, including off-road
usage. Observe safe driving speeds, especially
on rough terrain. As always, wear your safety belt.
SeeOff-Road Driving on page 319for tips on
off-road driving.What Makes an Airbag Inate?
In an impact of sufficient severity, the airbag
sensing system detects that the vehicle is
in a crash. Additionally, in the case of a “rollover
capable” roof-mounted side impact airbag, the
sensing system detects that the vehicle is about to
roll over. The sensing system triggers a release
of gas from the inator, which inates the
airbag. The inator, airbag, and related hardware
are all part of the airbag modules inside the
steering wheel and in the instrument panel in front
of the right front passenger. For vehicles with
roof-mounted rollover airbags, the airbag modules,
the inator, and the airbags are located in the
ceiling of the vehicle, near the side windows.
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Passenger Sensing System
Your vehicle has a passenger sensing system for
the right front passenger’s position. A passenger
airbag status indicator in the rearview mirror will
be visible when you turn your ignition key to
START or RUN.The words ON and OFF, or the symbol for on
and off, will be visible during the system check.
When the system check is complete, either
the word ON or the word OFF, or the symbol for
on or the symbol for off, will be visible. See
Passenger Airbag Status Indicator on page 202.
The passenger sensing system will turn off
the right front passenger’s frontal airbag under
certain conditions. The driver’s airbags are not
part of the passenger sensing system.
The passenger sensing system works with
sensors that are part of the right front passenger’s
seat and safety belt. The sensors are designed
to detect the presence of a properly-seated
occupant and determine if the passenger’s frontal
airbag should be enabled (may inate) or not.
Accident statistics show that children are safer
if they are restrained in the rear rather than
the front seat. We recommend that child restraints
be secured in a rear seat, including an infant
riding in a rear-facing infant seat, a child riding
in a forward-facing child seat, and an older
child riding in a booster seat.
United States
Canada
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NEUTRAL (N):In this position, the engine does
not connect with the wheels. To restart when
you are already moving, use NEUTRAL (N) only.
{CAUTION:
Shifting into a drive gear while your
engine is running at high speed is
dangerous. Unless your foot is rmly on
the brake pedal, your vehicle could move
very rapidly. You could lose control and
hit people or objects. Do not shift into a
drive gear while your engine is running at
high speed.
Notice:Shifting out of PARK (P) or
NEUTRAL (N) with the engine running at high
speed may damage the transmission. The
repairs would not be covered by your warranty.
Be sure the engine is not running at high
speed when shifting your vehicle.DRIVE (D):This position is for normal driving.
It provides the best fuel economy for your vehicle.
If you need more power for passing, and you are:
Going less than about 35 mph (55 km/h), push
the accelerator pedal about halfway down.
Going about 35 mph (55 km/h) or more, push
the accelerator all the way down.
You will shift down to the next gear and have
more power.
Downshifting the transmission in slippery road
conditions could result in skidding, see “Skidding”
underLoss of Control on page 318.
DRIVE (D) can be used when towing a trailer,
carrying a heavy load, driving on steep hills, or
for off-road driving. You may want to shift the
transmission to THIRD (3) or, if necessary, a lower
gear selection if the transmission shifts too often.
THIRD (3):This position is also used for normal
driving. It reduces vehicle speed more than
DRIVE (D) without using your brakes. You might
choose THIRD (3) instead of DRIVE (D) when
driving on hilly, winding roads, when towing
a trailer, so there is less shifting between gears
and when going down a steep hill.
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OnStar®service is provided to you subject to the
OnStar®Terms and Conditions. You may cancel
your OnStar®service at any time by contacting
OnStar®as provided below. A complete OnStar®
Owner’s Guide and the OnStar®Terms and
Conditions are included in the vehicle’s OnStar®
Subscriber glove box literature. For more
information, visit onstar.com or onstar.ca, contact
OnStar
®at 1–888–4–ONSTAR (1–888–466–7827)
or TTY 1–877–248–2080, or press the OnStar®
button to speak with an OnStar®advisor 24 hours a
day, 7 days a week.
Not all OnStar
®features are available on all
vehicles. To check if your vehicle is equipped to
provide the services described below, or for a
full description of OnStar
®services and system
limitations, see the OnStar®Owner’s Guide in your
glove box or visit onstar.com.
OnStar®Services
For new vehicles equipped with OnStar®, the Safe
& Sound Plan, or the Directions & Connections®
Plan is included for one year from the date of
purchase. You can extend this plan beyond the
rst year, or upgrade to the Directions &
Connections
®Plan. For more information, press
the OnStar®button to speak with an advisor. Some
OnStar®services (such as Remote Door Unlock
or Stolen Vehicle Location Assistance) may not be
available until you register with OnStar
®.
Available Services with Safe & Sound®Plan

Automatic Notication of Airbag Deployment
Advanced Automatic Crash Notication (AACN)
(If equipped)
Link to Emergency Services
Roadside Assistance
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To change the current mode, select one of the
following:
H(Vent):This mode directs air to the instrument
panel outlets.
)(Bi-Level):This mode directs about half of the
air to the instrument panel outlets; then directs
most of the remaining air to the oor outlets. A little
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):This mode directs most of the
air to the oor outlets with a little air directed to
the windshield and the side window outlets.
The recirculation button cannot be selected while
in oor mode.
@(Recirculation):Recirculation mode is used
to recirculate the air inside of your vehicle.
When this button is pressed, an indicator light in
the button will come on to let you know that it
is active. Use this mode to help prevent outside
odors and/or dust from entering your vehicle or to
help cool the air inside of your vehicle more
quickly. 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.
Defog and defrost modes are described later in
this section.
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Driver’s Side Temperature Lever:The lever on
the left side of the climate control panel is
used to raise or lower the temperature on the
driver’s side of the vehicle. Slide the lever up or
down to adjust the temperature.
Passenger’s Side Temperature Lever:The lever
on the right side of the climate control panel is
used to raise or lower the temperature on
the passenger’s side of the vehicle. Slide the lever
up or down to adjust the temperature. This 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 your
vehicle.
#(Air Conditioning):Press this button to turn
the air-conditioning system on or off. When
the button is pressed, an indicator light will come
on and the system will begin 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.
Defogging and Defrosting
Fog on the inside of windows is a result of high
humidity (moisture) condensing on the cool window
glass. This can be minimized if the climate
control system is used properly. There are
two modes to choose from to clear fog or frost
from your windshield. Use the defog mode to clear
the windows of fog or moisture and warm the
passengers. Use the defrost mode to remove fog
or frost from the windshield more quickly.
Turn the right knob clockwise or counterclockwise
to select one of the following modes:
-(Defog):This mode directs the air to the oor
outlets, windshield and side window outlets.
The recirculation button cannot be selected while
in defog mode.
1(Defrost):This mode directs most of the air to
the windshield and the side window outlets, with
only a little air directed to the oor outlets. The air
conditioning compressor 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.
188

Automatic Operation
AUTO (Automatic):When automatic operation
is active, the system will control the inside
temperature, the air delivery mode, and the
fan speed.
Use the steps below to place the entire system in
automatic mode:
1. Press the AUTO button.
When AUTO is selected, the air conditioning
operation and air outlet mode will be
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’s hot outside, the air inlet
will automatically switch to recirculate inside
air to help quickly cool down your vehicle.
2. Set the driver’s and passenger’s temperature.
To nd your comfort setting, start with a 72°F
(22°C) temperature setting and allow about
20 minutes for the system to adjust. Turn the
driver’s or passenger’s side temperature knob
to adjust the temperature setting as necessary.If you choose the temperature setting of 60°F
(15°C), the system will remain at the maximum
cooling setting. If you choose the temperature
setting of 90°F (32°C), the system will remain at
the maximum heat setting. Choosing either
maximum setting may not cause the vehicle to
heat or cool any faster.
Manual Operation
To change the current setting, select one of the
following:
w9x(Fan):This button allows you to manually
adjust the fan speed. Press the up arrow to
increase fan speed and the down arrow to
decrease fan speed. The display will change to
show you the selected fan speed and the driver’s
side temperature setting for ve seconds.
C(Mode):Press this button to manually change
the direction of the airow in your vehicle. Keep
pressing the button until the desired mode appears
on the display. The display will change to show
you the selected air delivery mode and the driver’s
temperature setting for ve seconds.
191

H(Vent):This mode directs air to the instrument
panel outlets.
)(Bi-Level):This mode directs approximately
half of the air to the instrument panel outlets, then
directs the remaining air to the oor outlets.
A little air is directed toward the windshield and the
side window outlets. Cooler air is directed to the
upper outlets and warmer air to the oor outlets.
6(Floor):This mode directs most of the air 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.
@(Recirculation):Press this button to turn
recirculation mode on or off. When this button is
pressed, an indicator light in the button will also
come on to let you know that it is activated.
Recirculation mode is used to recirculate the air
inside of your vehicle. Use this mode to help
prevent outside odors and/or dust from entering
your vehicle or to help cool the air inside of your
vehicle more quickly. Recirculation mode can be
used with vent and bi-level modes, but it cannot be
used with oor, defog or defrost modes. Defog and
defrost modes are described later in this section.If recirculation mode is selected with oor, defog, or
defrost modes, the indicator will ash three times
and then turn off indicating the selection is not
available.
You may also notice that the air conditioning
compressor will run while in recirculation mode.
This is normal and will help to prevent 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.#A/C (Air Conditioning):Press this button to
manually turn the air conditioning system on or off.
When the system is on, the system will
automatically begin to cool and dehumidify the air
inside of your vehicle. The air conditioning
symbol will appear on the display when the air
conditioning is on and will turn off when the
air conditioning is off.
192

If you turn the air conditioning off while in front
defrost or defog mode, the air conditioning symbol
will turn off, however, the A/C compressor will
remain 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.Defogging and Defrosting
Fog on the inside of the windows is a result of
moisture condensing on the cool window glass.
This can be reduced if the climate control system is
used properly. You can use either defog or front
defrost to clear fog or frost from your windshield.
-(Defog):Use this setting to clear the windows
of fog or moisture. This setting will deliver air
to the oor and windshield outlets.
0(Front Defrost):Press the front defrost button
to clear the windshield and side windows of
frost or fog quickly. The system will automatically
control the fan speed if you select defrost from
AUTO mode. If the outside temperature is
40°F (4°C) or warmer, your air conditioning
compressor will automatically run to help
dehumidify the air and dry the windshield. Do not
drive the vehicle until all the windows are clear.
193