ECU GMC SIERRA DENALI 2003 Owner's Manual

Air bags inflate with great force, faster than the blink of an eye. If you’re too close to an
inflating air bag, as you would be if you were
leaning forward,
it could seriously injure you.
Safety belts help keep you
in position before
and during a crash. Always wear your safety
belt, even with air bags. The driver should sit
as far back as possible while
still maintaining
control of the vehicle. Anyone who is up against, or very close
to,
any air bag when
it inflates can be seriously
injured or killed. Air bags
plus lap-shoulder
belts offer the best protection for adults, but
not for young children and infants. Neither the
vehicle’s safety belt system nor its air bag
system
is designed for them. Young children
and infants need the protection that a child restraint system can provide. Always secure
children properly in your vehicle. To read how,
see the parts of this manual called “Older
Children” and “Infants and Young Children”.
1-58

United States with
Passenger Sensing
System
Canada with Passenger
Sensing System United
StaG without
Passenger Sensing System
Canada without
Passenger Sensing System To turn
off the
right front passenger’s air bag, insert
your ignition key into the switch,
push in, and move the
switch
to the off position.
The AIR BAG
OFF light will come on to let you know
that the right front passenger’s air bag is
off. The
right front passenger’s air bag will remain
off until you
turn it back on again, and the
AIR BAG OFF light
will stay on
to remind you that the air bag is off.
If the ai. Jag readiness light ever comes on
when you have turned
off the air bag, it means
that something may be wrong with the air bag system. The right front passenger’s air bag
could inflate even though the switch
is off. If
this ever happens, don’t
let anyone whom the
national government has identified as a
member of
a passenger air bag risk group sit
in the right front passenger’s position (for
example, don’t secure a rear-facing child
restraint in your vehicle)
until you have your
vehicle serviced.
1-67

The passenger sensing system is designed to turn off
the passenger’s frontal air bag when a rear facing infant
seat, a forward-facing child restraint or a booster seat
is detected.
If the child restraint has been installed
and the on indicator is lit, turn the vehicle
off, remove
the child restraint from the vehicle and reinstall the
restraint following the child restraint manufacturer’s
directions and refer to
Securing a Child Restraint in the
Right Front Seat Position
on page 1-50 of this manual.
If after reinstalling the child restraint and restarting
the vehicle, the on indicator is still lit, secure the child in
the child restraint in a rear seat position in the vehicle
and check with your dealer.
The passenger sensing system is designed to enable
(may inflate) the right front passenger’s frontal air
bag anytime the system senses that
a person of adult
size is sitting properly in the right front passenger’s seat.
When the passenger sensing system has allowed the
air bag to be enabled, the on indicator will light and stay
lit to remind you that the air bag is active.
If a person of adult-size is sitting in the right front
passenger’s seat, but the
off indicator is lit, it could be
because that person isn’t sitting properly in the seat
or the air bag
off switch is in the off position. If this
happens and the switch is in the proper position, turn
the vehicle
off and ask the person to place the seatback
in the full upright position, then sit upright in the seat,
centered on the seat cushion, with the person’s
legs comfortably extended. Restart the vehicle and have
the person remain in this position for about two
minutes. This will allow the system to detect that person
and then enable the passenger’s air bag.
1-70

Rear Doors
Your vehicle is equipped with rear access doors that
allow easier access to the rear area of the extended cab.
To open a rear access
door from the outside, first
open the front door.
Then, use the handle
located on the front edge
of the rear access door
to open it.
Tailgate
You must fully close a rear access door before you can
close the front door. To open a rear access
door from the inside, the
front door must be opened
first. Then, use the
handle located on the
inside of the rear access
door to open it.
You can open the tailgate by lifting up on its handle
while pulling the tailgate toward you.
To shut the tailgate, firmly push it upward until it
latches.
After you put the tailgate back up, pull it back towards
you to be sure it latches securely.
2-8

Tailgate Removal
The tailgate on your vehicle can be removed to allow for
different loading situations. Although the tailgate can
be removed without assistance, you may want someone
to assist you with the removal to avoid possible
damage to the vehicle.
To remove the tailgate, do the following:
1. Raise the tailgate
slightly and release
both retaining
cable clips. To release
the retaining cable clips, lift the cable
so it
points straight out
and push the cable clip
forward.
2. With the tailgate at a
slight upward angle,
pull back on the tailgate
at the right edge and
then move the
tailgate to the right to
release the left edge.
Reverse the above procedure to reinstall. Make sure the
tailgate is secure.
2-9

Theft-Deterrent Systems
Vehicle theft is big business, especially in some cities.
Although your vehicle has a number of theft-deterrent
features, we know that nothing we put on it can make
it
impossible to steal. However, there are ways you
can help.
Content Theft-Deterrent
Your vehicle is equipped with a content theft-deterrent
alarm system.
With this system, the
security light on the cluster
will flash
as you open
the door
(if your ignition is
off), to let you know
that you are activating the
system. This
message reminds you to activate the theft-deterrent
system. Here’s how to do it:
1. Open the door.
2. Lock the door with the power door lock switch or
the remote keyless entry transmitter. The security light should come on and flash.
If you are using the
remote keyless entry transmitter, the door does
not need to be open.
3. Close all of the doors. The light will stop flashing and
stay solid.The security light should go
off after
approximately
30 seconds. The alarm is not armed
until the security light goes
off. If the delayed locking
feature is active, the alarm will not activate until all
doors are closed and the security light goes
off.
Once the system is armed, if a door is opened without
the key or the remote keyless entry transmitter, the
alarm will go
off. Depending on how you have
programmed the alarm in the secondary information
center, the horn may sound, the headlamps may flash
or both the headlamps and the horn will activate.
Remember, the theft-deterrent system won’t activate
if
you lock the doors with a key or use the manual
door lock. It activates only
if you use a power door lock
switch with the door open, or with the remote keyless
entry transmitter. You should also remember that
you can start your vehicle with the correct ignition key
if
the alarm has been set off.

Here’s how to avoid setting off the alarm by accident:
If you don’t want to activate the theft-deterrent
system, the vehicle should be locked with the door
key after the doors are closed.
Always unlock a door with a key, or use the remote
keyless entry transmitter. Unlocking a door any
other way will set
off the alarm if the system
has been armed.
If you set off the alarm by accident, unlock any door
with the key. You can also turn
off the alarm by pressing
UNLOCK on the remote keyless entry transmitter or
by placing the key in the ignition and turning it to
START.
Testing the Alarm
The alarm can be tested by following these steps:
1. From inside the vehicle, lower the driver’s window
and open the driver’s door.
2. Activate the system by locking the doors with the
power door lock switch while the door is open, or
with the remote keyless entry transmitter.
3. Get out of the vehicle, close the door and wait for
the security message
to go out.
4. Then reach in through the window, unlock the door
with the manual door lock and open the door. This
should set
off the alarm. If the
alarm does not sound and the headlamps do not
flash, you may have the feature turned
off. See DIC
Operation and Displays on page 3-43 for more
information.
Passlock@
Your vehicle is equipped with the
Passlock@ theft-deterrent system.
Passlock@ is a passive theft-deterrent system.
Passlock@ enables fuel
if the ignition lock cylinder is
turned with a valid key.
If a correct key is not used or the
ignition lock cylinder is tampered with, fuel is disabled.
If the engine stalls and the security light flashes,
wait until the light stops flashing before trying to restart
the engine. Remember
to release the key from
START as soon as the engine starts.
If the engine is running and the security light comes on,
you will be able
to restart the engine if you turn the
engine
off. However, your Passlock@ system is
not working properly and must be serviced by your
dealer. Your vehicle is not protected by Passlock@ at this
time. You may also want to check the fuse (see
Fuses and Circuit Breakers on page 5-95.) See your
dealer for service.
In an emergency, call the GM Roadside Assistance
Center. See
Roadside Assistance Program on page 7-5
under Customer Assistance Information.
2-1 4

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

HomeLink@ Transmitter
HomeLink,@ a combined universal transmitter and
receiver, provides a way to replace up to three
hand-held transmitters used to activate devices such as
gate operators, garage door openers, entry door locks, security systems and home lighting. Additional
HomeLink@ information can be found on the internet at
www.homelink.com or by calling 1-800-355-351
5.
If your vehicle is equipped with the HomeLink@
Transmitter, it complies with Part
15 of the FCC Rules.
Operation is subject to the following two conditions:
(1) this device may not cause harmful interference, and
(2) this device must accept any interference received,
including interference that may cause undesired
operation. This device complies
with RSS-210 of Industry Canada.
Operation
is subject to the following two conditions:
(1) this device may not cause interference, and (2) this
device must accept any interference, including
interference that may cause undesired operation of the
device.
Changes and modifications to this system by other than
an authorized service facility could void authorization
to use this equipment.
Programming the HomeLink
Transmitter
Do not use the HomeLink@ Transmitter with any garage
door opener that does not have the “stop and reverse”
feature. This includes any garage door opener model
manufactured before April
1, 1982.
Keep the original transmitter for use in other vehicles as
well as for future HomeLink@ programming. It is also
recommended that upon the sale of the vehicle,
the programmed HomeLink@ buttons should be erased
for security purposes. Refer to “Erasing HomeLink@
Buttons” or, for assistance, contact HomeLinkO on the
internet at: www.homelink.com or by calling
1-800-355-351
5.
2-35

If the right front passenger’s air bag is turned
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.
I he air bag readiness I r. It ever comes ~ 7
when you have turned off the air bag, it means
that something may be wrong with the air bag
system. The right front passenger’s air bag
CAUTION: (Continued)
wuld inflate even though the svvl;ch is off. If
this ever happens, don’t let anyone whom the
national government has identified as a
member of a passenger air bag risk group
sit
in the right front passenger’s position (for
example, don’t secure a rear-facing child
restraint
in your vehicle) until you have your
vehicle serviced.
Passenger Air Bag Status Indicator
If your vehicle has the passenger sensing system your
rearview mirror will have a passenger air bag status
indicator.
Passenger Air Bag Status Indicator
- United States
3-30