2003 GMC YUKON DENALI tow

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