2003 GMC YUKON DENALI tow

Child Restraint Systems
. ..
seating surface against the back of the infant. The
An infant car bed
(A), a special bed made for use in a harness system holds the infant in place and, in a crash,
motor vehicle, is an infant restraint system designed acts to keep the infant positioned in the restraint.
to restrain or position a child on a continuous flat
surface. Make sure that the infant’s head rests toward
the center of the vehicle.
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in frontal and near-frontal impacts. For side impact air
bags, inflation is determined by the location and severity
of the impact.
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 Operating
Your
All- Wheel-Drive Vehicle Off Paved Roads on
page
4-16 for tips on off-road driving.
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. For
both frontal and side impact air bags, the sensing
system triggers a release
of gas from the inflator, which
inflates the air bag. The inflator, the air bag and
related hardware are all part of the air bag modules.
Frontal air bag modules are located inside the steering
wheel and instrument panel. For vehicles with side
impact air bags, the air bag modules are located in the
seatback closest
to the driver’s and/or right front
passenger’s door.
How Does an Air Bag Restrain?
In moderate to severe frontal or near frontal collisions,
even belted occupants can contact the steering wheel or
the instrument panel. In moderate
to severe side
collisions, even belted occupants can contact the inside
of the vehicle. The air bag supplements the protection
provided by safety belts. Air bags distribute the force of
the impact more evenly over the occupant’s upper
body, stopping the occupant more gradually. But the
frontal air bags would not help you in many types
of collisions, including rollovers, rear impacts, and many
side impacts, primarily because an occupant’s motion
is not toward the air bag. Side impact air bags would not
help you in many types of collisions, including frontal
or near frontal collisions, rollovers, and rear impacts,
primarily because an occupant’s motion is not toward
those air bags. Air bags should never be regarded
as anything more than a supplement
to safety belts, and
then only in moderate
to severe frontal or near-frontal
collisions for the driver’s and right front passenger’s
frontal air bags, and only in moderate to severe
side collisions for vehicles with a driver’s and right front
passenger’s side impact air bag.
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/r CAUTION:
If the air bag readiness light in the instrument
panel cluster ever comes on and stays on,
it
means that something may be wrong with the
air bag system. If this ever happens, have the
CAUTION: (Continued)
CAUTION:
u icle servicc- prom. y, because an
adult-size person sitting in the right front passenger’s seat may not have the protection
of the frontal air bag. See “Air Bag Readiness
Light”
in the Index for more on this, including
important safety information.
Aftermarket equipment, such as seat covers, can affect
how well the passenger sensing system operates.
You may want to consider not using seat covers or other
aftermarket equipment
if your vehicle has the passenger
sensing system.
Stowing of articles under
th -3assenger’s seat
or between the passenger’s seat cushion and
seatback may interfere with the proper
operation of the passenger sensing system.
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Programmable Automatic
Door Locks
Your vehicle is equipped with an automatic locklunlock
feature which enables you
to program your vehicle’s
power door locks. You can program this feature through
the Driver Information Center (DIC), or by the following
method.
Programmable Locking Feature
The following is the list of available programming
options:
Mode 1: All doors lock when the transmission is shifted
into gear.
Mode 2: All doors lock when the vehicle speed is
greater than 8 mph (13 km/h).
Mode 3: No automatic door locking.
The automatic door locks were pre-programmed at the
factory to lock all the doors when the transmission
is shifted into gear. The following instructions detail how
to program your door locks differently than the factory
setting. Choose one of the three programming
options listed above before entering the program mode.
To enter the program mode, do the following:
2.
3.
Turn the key to RUN and LOCK twice. Then, with
the key in
LOCK, release the turn
signaVmultifunction lever. Once you do this, you will
hear the lock switch lock and unlock, the horn
will chirp twice, and a
30 second program timer will
begin. You are now ready to program the
automatic door locks.
Select one of the three programming options listed
previously, and press the lock side
of the power door
lock switch
to cycle through the lock options. You will
have
30 seconds to begin programming. If you
exceed the
30 second limit, the locks will
automatically lock and unlock and the horn will chirp
twice to indicate that you have left the program
mode.
If this occurs, repeat the procedure beginning
with Step
1 to re-enter the programming mode.
You can exit the program mode any time by turning the
ignition to
RUN (the locks will automatically lock and
unlock and the horn will chirp twice
to indicate that you
are leaving the program mode). If the locklunlock
switches are not pressed while in the programming
mode, the current auto IocWunlock setting will not
be modified.
See your dealer for more information.
I. Begin with the ignition off. Then pull the turn
signal/multifunction lever toward you and hold
it there while you perform the next step.
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Programmable Unlocking Feature
The following is the list of available programming
options:
Mode 1: Driver’s door unlocks when the transmission is
shifted into PARK
(P).
Mode 2: All doors unlock when the transmission is
shifted into PARK (P).
Mode 3: All doors unlock when the key is removed
from the ignition.
Mode 4: No automatic door unlock.
The automatic door locks were pre-programmed at the
factory
to unlock the driver’s door once the transmission
is shifted
to PARK (P). The following instructions detail
how
to program your door locks differently than the
factory setting. Choose one of the four programming
options listed above before entering the program mode.
To enter the program mode, do the following:
1. Begin with the ignition off. Then pull the turn
signaVmultifunction lever toward you and hold
it there while you perform the next step.
2.
3.
Turn the key to RUN and LOCK twice. Then, with the
key in LOCK, release the turn signaVmultifunction
lever. Once you do this, you will hear the lock switch
lock and unlock, the horn will chirp twice, and a
30-second
program iir-ner wiii begin.
You are now ready
to program the automatic door
locks. Select one of the four programming options
listed previously, and press the unlock side
of
the power door lock switch to cycle through the
unlocking options. You
will have 30 seconds
to begin programming. If you exceed the 30-secona
limit, the locks will automatically lock and unlock
and the horn will chirp twice
to indicate that
you have left the program mode.
If this occurs,
repeat the procedure beginning with Step
1
to re-enter the programming mode.
You can exit the program mode any time by turning the
ignition to
RUN. The locks will automatically lock and
unlock and the horn will chirp twice
to indicate that you
are leaving the program mode. If the IocWunlock
switches are not pressed while in the programming
mode, the current auto IocWunlock setting
will not be
modified.
See your dealer for more information.
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Starting and Operating Your
Vehicle
New Vehicle Break-In
Notice: Your vehicle doesn’t need an elaborate
“break-in.’’ But
it will perform better in the long run
if you follow these guidelines:
e
e
Keep your speed at 55 mph (88 km/h) or less for
the first
500 miles (805 km).
Don’t drive at any one speed
- fast or
slow
- for the first 500 miles (805 km).
Don’t make full-throttle starts.
Avoid making hard stops for the first
200 miles
(322 km) or so. During this time your new
brake linings aren’t yet broken in. Hard stops
with new linings can mean premature wear and
earlier replacement. Follow this breaking-in
guideline every time you get new brake linings.
Don’t tow a trailer during break-in. See “Towing
a Trailer” in the Index for more information.
Ignition Positions
With your key in the ignition switch you can turn it to
four different positions.
I C
A-
A (LOCK): This position locks your ignition and
transmission. It’s a theft-deterrent feature. You
will only
be able
to remove your key when the ignition is
turned to
LOCK.
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Automatic Transmission Operation
Your vehicle is equipped with an automatic transmission
and features an electronic shift position indicator
located within the instrument panel cluster.
There are several different positions for your shift lever.
PARK
(P): This position locks your drive wheels. It’s
the best position to use when you start your engine
because your -1icle
c ’t move easily.
It is aangerous to get out of your venlcle il
shift lever is not fully in PARK (P) with the
parking brake firmly set. Your vehicle can roll.
Don’t leave your vehicle when the engine is
running unless you have to.
If you have left the
engine running, the vehicle can move
suddenly. You or others could be injured.
CAUTION: (Continued)
o be sure your vehicle won’t move, even
when you’re on fairly level ground, always set
your parking brake and move the shift lever to PARK (P). See “Shifting Into Park (P)” in the
Index.
If you’re pulling a trailer, see “Towing a
Trailer” in the Index.
REVERSE (R): Use this gear to back up.
Notices Shifting to REVERSE (R) while your vehicle
is moving forward could damage your transmission.
Shift to REVERSE
(R) only after your vehicle is
stopped.
To rock your vehicle back and forth to get out of snow,
ice or sand without damaging your transmission,
see If
You Are Stuck: In Sand, Mud, Ice or Snow on
page 4-4 1.
NEUTRAL (N): In this position, your engine doesn’t
connect with the wheels. To restart when you’re already
moving, use NEUTRAL
(N) only.
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Shifting into a drive gear while your engine is
“racing” (running at high speed) is dangerous.
Unless your foot is firmly on the brake pedal,
your vehicle could move very rapidly. You
could lose control and hit people or objects.
Don’t shift into a drive gear while your engine
is racing.
Notices Damage to your transmission caused by
shifting out of PARK (P) or NEUTRAL (N) with
the engine racing isn’t covered by your warranty.
DRIVE (D):
This position is for normal driving. If
you need more power for passing, and you’re:
accelerator pedal about halfway down.
accelerator all the way down.
0 Going less than about 35 mph (55 km/h), push your
Going about 35 mph (55 km/h) or more, push the
You’ll shift down
to the next gear and have more power.
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,
however it offers more power and lower fuel economy
than DRIVE (D).
SECOND (2): This position gives you more power but
lower fuel economy. You can use SECOND
(2) on
hills.
It can help control your speed as you go down
steep mountain roads, but then you would also want
to
use your brakes off and on.
If you manually select SECOND
(2), the transmission
will drive in second gear. You may use this feature
for reducing the speed of the rear wheels when you are
trying
to start your vehicle from a stop on slippery
road surfaces. Once the vehicle
is moving, shift into
DRIVE
(D).
FIRST (1): This position gives you even more power,
but lower fuel economy than SECOND
(2). You can use
it on very steep hills, or in deep snow or mud. If the
shift lever is put in FIRST
(1) while the vehicle is moving
forward, the vehicle won’t shift into first gear until the
vehicle is going slowly enough.
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