tow GMC YUKON DENALI 2003 Owners Manual

The 2003 GMC Yukon DenaIiNukon XL Denali
Owner Manual
Seats and Restraint Systems ........................... 1-1
Front Seats
............................................... 1-3
Rear Seats
............................................... 1-7
Safety Belts
............................................. 1-25
Child Restraints
....................................... 1-48
Air Bag Systems
...................................... 1-72
Restraint System Check
............................ 1-86
Features and Controls ..................................... 2-1
Keys
........................................................ 2-3
Doors and Locks
....................................... 2-8
Windows
................................................. 2-14
Theft-Deterrent Systems
............................ 2-1 6
Starting and Operating Your Vehicle
....... 2-18
Mirrors
.................................................... 2-31
Onstar@
S stem ...................................... 2-36
HomeLink
J Transmitter ............................. 2-38
Storage Areas
......................................... 2-42
Sunroof
.................................................. 2-46
Vehicle Personalization
............................. 2-47
Instrument Panel ............................................. 3-1
Instrument Panel Overview
.......................... 3-4
Warning Lights, Gages and Indicators
......... 3-28
Driver Information Center (DIC)
.................. 3-43
Climate Controls
...................................... 3-1 9
Audio System(s)
....................................... 3-58
Driving Your Vehicle ....................................... 4-1
Your Driving, the Road, and Your Vehicle
..... 4-2
Towing
................................................... 4-44
Service
..................................................... 5-3
Fuel
......................................................... 5-5
Checking Things Under the Hood ............... 5-10
All-Wheel Drive
........................................ 5-46
Rear Axle ............................................... 5-48
Bulb Replacement
.................................... 5-49
Tires
...................................................... 5-55
Appearance Care ..................................... 5-78
Vehicle Identification
................................. 5-86
Electrical System
...................................... 5-87
Capacities and Specifications
..................... 5-96
Normal Maintenance Replacement Parts
...... 5-98
Maintenance Schedule
................................ 6-2
Customer Assistance Information .................... 7-1
Customer Assistance Information
.................. 7-2
Reporting Safety Defects
............................ 7-9
Index ................................................................ 1
Service and Appearance Care .......................... 5-1
Windshield Wiper Blade Replacement
......... 5-54
Maintenance Schedule ..................................... 6-1

Front Seats
Power Seats
Horizontal Control: You can adjust your vehicle’s front
seats with the horizontal control located on the
outboard edge of each front seat.
Raise or lower the front of the seat by raising or
lowering the forward edge of the control. Raise or lower
the rear of the seat by raising or lowering the rear
edge
of the control.
Move the seat forward or rearward by moving the whole
control toward the front or toward the rear of the
vehicle.
Moving the whole control up or down raises or lowers
the entire seat cushion.
1 -3

Head Restraints I-he head restraints tilt forward and rearward also.
To adjust the tilt for either of the front head restraints,
pull it toward you until you hear a click. There are
four positions available: initial position, first click, second
click and third click. Each position will click into place.
After the third position (three clicks) is reached,
pulling the head restraint farther will release it back
to
the upright position.
Pull firmly on the top of the head restraint to position it
to your liking.
The rear seat head restraints in your vehicle are
adjustable. Slide an adjustable head restraint up or
down
so that the top of the restraint is closest to the top
of your head. This position reduces the chance of a
neck injury in a crash.
On some models, the head restraints tilt forward and
rearward also.
Adjust your head restraint
so that the top of the restraint
is closest
to the top of your head. This position
reduces the chance of a neck injury in a crash.
1 -6

Rear Seats
Rear Seat Operation
Entering or Exiting the Third Row
Seats
Yukon Qenali: To enter or exit the third row seat you
must fold the second row seat down following the
instructions later in this section. See “Folding the
Seatback” under
60/40 Split Bench Seat on page 7-9.
If you are exiting the third row seat with no assistance
do the following: Be sure
to return the seat to the passenger position
when finished.
Pull forward and push rearward on the
seat to make sure it is locked in place.
Yukon XL Denali: The passenger’s side of the second
row
60/40 or rear bucket seat has an easy entry/exit
feature. This makes it easy
to get in and out of the third
row seat.
To operate the easy entry seat, do the following:
2. Next, push the seatback forward until it is flat
with the floor.
1. Lift the release lever on the back of the seat.
2. Tilt the seatback toward the front of the vehicle and
the seat will release.
1 -i

Tilting the 50/50 Split Bench Seat
1. Fold the seatbacks forward using the instructions
listed previously.
2. Unlatch the seat from
the floor by pulling up
on the lever labeled
2,
located on the rear I of the seat.
Returning the Seat(s) to an Upright
Pos:+:on
3. Lift the rear of the seat up from the floor and push it
forward until it locks into place. You will not be able
to unlatch the seat from the floor unless the
seatback is folded down.
The seat will now remain locked in the upright position.
~~ fhe seatback I’t locked, it could move
forward in a sudden stop or crash. That could
cause injury to the person sitting there. Always
press rearward on the seatback to be sure it is
locked.
To return the seatback to an upright position, do the
following:
1. Pull the lever labeled 3 toward you.
1-13

2. While still holding the lever 3 toward you, grasp the
3. Let go of lever 3 and pull the seat completely down.
4. Push down on the seat firmly. Try pulling it up to
top
of the seat and pull it toward
you slightly.
be sure it is locked into place.
5. Pull up on the release
lever labeled
1 and
then pull up on
the seatback or the
assist strap located on
the outboard side
of
the seat until the
seatback locks into the upright position.
Removing the 50/50 Split Bench Seats
To remove the 50/50 split bench seat, do the following:
1. Open the liftgate.
2. Fold the seatback
forward onto the seat
cushion
by using
the lever labeled
1.
The seat cannot
be removed unless the
seatback is folded.
1-14

3. Lift the rear of the seat up from the floor and push it
forward. You will not be able to unlatch the seat
from the floor unless the se; xk is
ded down.
~
If the support rod isn’t properly engaged,
folded third row seat could come loose in a
sudden stop or crash. That could cause injury
to people and damage to your vehicle. Always
be sure the support
rod is properly engaged
when the third row seat
is folded forward.
4. While holding the seat
forward, pull the prop
rod out from the
retainer clips. Flip the
prop rod (arrow)
down until it latches
into place.
The seat will now remain in the upright position.
Returning the Seat to an Upright
Position
To return the seatback to the upright position, do the
following:
1. Pull the lever (arrow)
on the prop rod bracket
until the rod unlatches
from the seat
. .. bracket.
2.
3.
4.
5.
Place the prop rod back into the storage position.
Pull the seat toward you and push firmly down until
the seat latches in the floor.
Try pulling it up to be sure it is locked into place.
Pull up on the release lever labeled
1 and then pull
up on the seatback until the seatback locks into the
upright position.
1-19

Never do this.
Here two children are wearing the same belt.
The belt can’t properly spread the impact forces.
In a crash, the two children can be
crushed together and seriously injured.
A belt
must be used by only one person at a time.
Q: What if a child is wearing a lap-shoulder belt,
but the child
is so small that the shoulder belt
is very close to the child’s face or neck?
A: If the child is sitting in a rear seat outside position,
move the child toward the center
of the vehicle.
See Rear Safety Belt Comfort Guides for Children
and Small Adults
on page 1-44. If the child is
sitting in the center position, move the child toward
the safety belt buckle. In either case, be sure
that the shoulder belt still
is on the child’s shoulder,
so that in a crash the child’s upper body would
have the restraint that belts provide.
1-49

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.
1-54

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.
1-78