2003 GMC SIERRA DENALI air condition

ld ,u secure a forward-fac ..., :hi[ ~ restra in
the right front seat, always move the front
passenger seat as far back as
it will go. It is
better to secure the child restraint in a
rear seat.
A child in a rear-facing child restraint can be
seriously injured or killed if the right front passenger’s air bag inflates. This
is because
the back of the rear-facing child restraint
would be very close to the inflating air bag. Be
sure the air bag
is off before using a
rear-facing child restraint
in the right front seat
position.
Even though the Passenger Sensing System
and/or
AIR BAG OFF switch are designed to
turn
off the passenger’s frontal air bag under
certain conditions, no system
is fail-safe, and
no one can guarantee that an air bag will not
deploy under some unusual circumstance,
even though
it is turned off. General Motors
therefore recommends that rear-facing child restraints be transported
in vehicles with a
rear seat that will accommodate a rear-facing
child restraint, whenever possible.
CAUTION: (Continued)
If your vehicle has the passenger sensing system
and/or the AIR BAG
OFF switch and you need to secure
a rear-facing child restraint in the right front passenger’s
seat, the passenger’s frontal air bag must be
off.
See Passenger Sensing System on page 1-68, Securing
a Child Restraint in the Right Front Seat Position on
page
1-50, and Air Bag Off Switch on page 1-64
for more on this including important safety information.
Wherever you install it, be sure to secure the child
restraint properly.
Keep in mind that an unsecured child restraint can
move around in
a collision or sudden stop and injure
people in the vehicle. Be sure to properly secure
any child restraint in your vehicle
- even when no child
is in it.
1-39

When Should an Air Bag Inflate?
An air bag is designed to inflate in a moderate to severe
frontal, or near-frontal crash. The air bag will inflate
only
if the impact speed is above the system’s designed
“threshold level.”
In addition, your vehicle has “dual stage” frontal air
bags, which adjust the amount of restraint according to
crash severity. For moderate frontal impacts, these
air bags inflate at a level less than full deployment. For
more severe frontal impacts, full deployment occurs.
If the front of your vehicle goes straight into a wall that
doesn’t move or deform, the threshold level for the
reduced deployment is about
10 to 16 mph
(16 to 25 km/h), and the threshold level for a full
deployment is about
20 to 25 mph (32 to 40 km/h). The
threshold level can vary, however, with specific
vehicle design,
so that it can be somewhat above or
below this range.
If your vehicle strikes something that will move or
deform, such as a parked car, the threshold level will be
higher. The air bag is not designed to inflate in
rollovers, rear impacts, or in many side impacts because
inflation would not help the occupant.
In any particular crash, no one can say whether an air
bag should have inflated simply because of the damage
to a vehicle or because of what the repair costs were. Inflation
is determined by the angle of the impact and
how quickly the vehicle slows down in frontal or
near-frontal impacts.
The air bag 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. See “Off-Road
Driving” in the Index for more tips on off-road driving.
Seat Position Sensors
Vehicle’s with dual stage air bags are also equipped
with special sensors which enable the sensing system to
monitor the position of both the driver and passenger
front seats. The seat position sensor provides
information which is used to determine
if the air bags
should deploy at a reduced level or at full depoyment.
What Makes an Air Bag Inflate?
In an impact of sufficient severity, the air bag sensing
system detects that the vehicle is in a crash. The
sensing system triggers a release of gas from the
inflator, which inflates the air bag. The inflator, air bag,
and related hardware are all part of the air bag
modules inside the steering wheel and in the instrument
panel in front of the right front passenger.
1-61

This switch should only be turned to AIR BAG OFF if
the person in the right front passenger’s position is
a member of a passenger risk group identified by the
national government as follows:
Infant. An infant (less than 1 year old)
must ride in the front seat because:
my vehicle has no rear seat;
my vehicle has a rear seat too small to
accommodate a rear-facing infant seat; or
the infant has a medical condition which, according
to the infant’s physician, makes it necessary for the
infant to ride in the front seat
so that the driver
can constantly monitor the child’s condition.
Child age 1 to 12. A child age 1 to 12 must
ride in the front seat because:
my vehicle has no rear seat;
although children ages 1 to 12 ride in the rear
seat(s) whenever possible, children ages
1 to 12
sometimes must ride in the front because no space
is available in the rear seat(s) of my vehicle; or
0 the child has a medical condition which, according
to the child’s physician, makes it necessary for the
child to ride in the front seat
so that the driver
can constantly monitor the child’s condition.
1-66
Medical Condition. A passenger has a
medical condition which, according to his
or her physician:
causes the passenger air bag to pose a special risk
for the passenger; and
makes the potential harm from the passenger air
bag in a crash greater than the potential harm
from turning
off the air bag and allowing the
passenger, even
if belted, to hit the dashboard or
windshie in a crash.
11 tne right front passenger’s air bag is -_-me_.
off for a person who isn’t in a risk group
identified by the national government, that
person won’t have the extra protection of an
air bag. In a crash, the air bag wouldn’t be able
to inflate and help protect the person sitting
there. Don’t turn
off the passenger’s air bag
unless the person sitting there is in a risk
group. See ”Air Bag
Off Switch” in the Index
for more on this, including important safety
information.

Passenger Air Bag
Status
Indicator
- Canada
The passenger sensing system will turn
off the right
front passenger’s frontal air bag under certain
conditions. The driver’s air bag and the side air bags
are not part of the passenger sensing system. In
addition to the passenger sensing system, your vehicle
also has an air bag
off switch located on the instrument
panel as required by the government.
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 air bag should be enabled (may
inflate) or not. The passenger
sensing system is designed to turn
oft
the right front passenger’s frontal air bag if:
the right front passenger seat is unoccupied
the system determines that an infant is present in a
rear-facing infant seat
J the system determines that a small child is present
in a forward-facing child restraint
the system determines that a small child is present
in a booster seat,
0 a right front passenger takes hidher weight off of
the seat for a period of time
the right front passenger seat is occupied by a
smaller person, such as a child who has outgrown
child restraints or a very small person
the air bag off switch is in the off position
or if there is a critical problem with the air bag
system or the passenger sensing system
When the passenger’s frontal air bag has been turned
off either by the passenger sensing system or by the air
bag
off switch, the off indicator will light and stay lit to
remind you that the air bag is
off.
1-69

Onstar@ System
I I
Onstar@ uses global positioning system (GPS) satellite
technology, wireless communications, and state of
the art call centers to provide you with a wide range of
safety, security, information and convenience services.
An Onstar@ subscription plan is included in the price
of your vehicle. You can easily upgrade or extend your
Onstar@ services to meet your personal needs.
A complete Onstar@ user’s guide and the terms and
conditions of the Onstar@ Subscription Service
Agreement are included in your Onstar@-equipped
vehicle’s glove box literature. For more information, visit
www.onstar.com, contact Onstar@ at
1 -888-4-ONSTAR
(1-888-466-7827), or press the blue Onstar@ button to
speak to an Onstat@ advisor 24 hours a day, 7 days
a week.
Onstar@ Services
Onstar@ provides a number of service plans to closely
meet your needs. Some of the services currently
provided by OnStar@ are:
Automatic Notification of Air Bag Deployment
Emergency Services
Roadside Assistance Stolen Vehicle Tracking
AccidentAssist
Remote Door Unlock
0 Remote Diagnostics
Onstar@ MED-NET (Requires separate activation
Online and Personal Concierge Services
and
annual fee on some plans)
Route Support
0 RideAssist
0 Information and Convenience Services
2-33

Climate Controls
Dual Automatic Climate Control
System
Your vehicle may have the optional dual automatic
climate control system. With this system you can control
the heating, cooling and ventilation for your vehicle.
If your vehicle is equipped with the dual automatic
climate control system, memory seats, and memory
mirrors, you can store and recall the climate control
settings for temperature, air delivery mode, and
fan speed for two different drivers. The personal choice
settings recalled are determined by the transmitter
used to enter the vehicle. After the button with the
unlock symbol on a remote keyless entry transmitter
is pressed, the climate control will adjust to the last
settings of the identified driver. The settings can also be
changed by pressing one of the memory buttons
(1 or 2) located on the driver’s door. When adjustments
are made, the new settings are automatically saved
for that driver.
A 8fj? v (Fan): Press this button to increase or
decrease the fan speed.
0 (Off): Press this button to turn off the entire climate
control system. Outside air will still enter the vehicle, and
will be directed to the floor. This direction can be changed
by pressing the mode button. The temperature can also
be adjusted using either temperature knob. Press the up
or down arrows on the fan switch, the defrost button, the
AUTO button, or the air conditioning button to turn the
system on when it is
off.
,% 4d (Mode): Press this button to manually select the air
delivery mode to the floor, panel, or windshield outlets.
This system will stay in the selected mode until the mode
button is pressed again, or the AUTO button, defrost
button, or the off button is pressed. Air delivery mode can
be adjusted while the system is off. A five second status
display will indicate the current mode.
3-1 8

Display: In the full AUTO mode, the automatic dual
climate control system display will show the driver set
temperature and an arrow pointing to the driver’s side. An
arrow pointing to the passenger’s side will display
if both
sides are set to the same temperature.
If the temperature
settings are not the same, the opposite side temperature
setting will be displayed for an additional five seconds.
During the five second status display the current mode
and blower speed will be displayed.
Driver’s Side Temperature Knob: Turn this knob
clockwise or counterclockwise to manually raise or lower
the temperature on the driver’s side of the vehicle.
The display will show the temperature setting decreasing
or increasing and an arrow pointing to the driver. The
temperature can be adjusted even
if the system is
turned
off. If the passenger’s set temperature has not
been adjusted this knob controls both the driver’s
and passenger’s air temperature. The temperature to
the rear seat area is controlled by using this knob.
Passenger’s Side Temperature Knob: Turn this knob
clockwise or counterclockwise to manually raise or
lower the temperature on the passenger’s side of the
vehicle. The display will show the temperature
setting decreasing or increasing and an arrow pointing
to the passenger. The temperature can be adjusted
even
if the system is turned off. Once this knob is used,
the passenger’s temperature will remain independent
of the driver’s until the AUTO button is pressed and held
for approximately four seconds.
Automatic Operation
AUTO (Automatic): When automatic operation is
active the system will control the inside temperature, the
air delivery, 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 display will change to
show the current driver’s set temperature,
delivery mode and fan speed. Press the AUTO
button again within five seconds to display
the passenger’s set temperature.
If the driver and passenger’s temperature settings
are not the same, the opposite side temperature
setting will be displayed for an additional five
seconds. To make the passenger’s temperature the
same as the driver’s press and hold the AUTO
button for approximately four seconds.
When auto is selected, the air conditioning
operation and air inlet will be automatically
controlled. The air conditioning compressor will run
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 may
automatically switch to recirculate inside air to help
quickly cool down your vehicle. The light on the
button will illuminate in recirculation.
3-1 9

(ri (Floor): This mode directs most of the air to the
floor vents. Some air also comes out of the defroster and
side window vents. Use this mode to send air to the
rear of the vehicle. Keep the area under the front seats
free of objects that could obstruct airflow to the rear
of the vehicle. The recirculation button cannot be
selected in the floor mode.
(Recirculation): Press this button to turn the
recirculation mode on or
off. The recirculation mode is
used to limit the amount of outside air entering your
vehicle. This is helpful when you are trying to prevent
outside odors and/or dust from entering your vehicle, or
to help cool the air inside of your vehicle more quickly.
When this mode is on, inside air will recirculate
throughout your vehicle. When this button is pressed,
an indicator light in the button will also come on to
let you know that it is activated.
If you select recirculation while in defrost, defog, or
floor, the light on the button will flash and go out to let
you know this is not allowed. This is to prevent
windshield fogging.
If the weather is cold and damp, the system may cause
the windows to fog while using the recirculation
mode.
If the windows do start to fog, select defog or
front defrost mode
a NC (Air Conditioning): Press this button to
manually turn the air-conditioning system on or
off.
When the system is selected, or in AUTO mode
the system will automatically begin to cool and
dehumidify the air inside
of your vehicle.
If you select air conditioning off while in front defrost, or
defog mode the air conditioning
off symbol will flash
to let you know this is not allowed.
You may notice a slight change in engine performance
when the air-conditioning compressor shuts
off and
turns
on again. This is normal.
%k (Air Conditioning Off): When you turn the air
conditioning
off, this symbol will appear on the display.
When the air conditioning is selected or in AUTO
mode, the system will run the air conditioning
automatically.
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