2002 GMC YUKON DENALI ignition

1-4 Heated Front Seats
The control for the driver's
side heated seat is located
on the driver's side door
panel. The control for the
passenger's side heated seat
is located on the passenger's
side door panel.
The ignition must be in RUN for this feature to operate.
To activate the heated seats, press the button once for the
HI heat setting. Press the button again for the LO heat
setting. To turn off the heated seats, press the button a third
time. An indicator light on the button will illuminate for
each heat setting anytime the heated seats are operating.
The heated front seats will be canceled after the ignition
is turned to OFF. If you still want to use the heated front
seat feature after you restart your vehicle, you will need
to press the heated seat button again.
Your vehicle also has rear heated seats. See the
section on ªRear Heated Seatsº later in this section
for more information.
Reclining Front Seatbacks
Your vehicles front seatbacks have a recline feature.
Vertical Control: You can use the vertical control to
adjust the angle of the seatback. Move the reclining
front seatback rearward or forward by moving the
vertical control toward the rear or toward the front
of the vehicle.

1-26 Heated Rear Seats (Second Row)
The controls are located
on the back of the
center console.
The ignition must be in RUN for this feature to operate.To activate the heated seats, press the button once for
the HI heat setting. Press the button again for the
LO heat setting. To turn off the heated seats, press the
button a third time. An indicator light will illuminate for
each heat setting any time the heated seats are operating.
The heated seats will be canceled when the ignition is
turned to OFF. If you still want to use the heated seat
feature after you restart your vehicle, you will need to
press the heated seat button again.

1-49 Servicing Your Air Bag-Equipped Vehicle
Air bags affect how your vehicle should be serviced.
There are parts of the air bag systems in several places
around your vehicle. Your dealer and the service manual
have information about servicing your vehicle and the
air bag systems. To purchase a service manual, see
ªService and Owner Publicationsº in the Index.
CAUTION:
For up to 10 minutes after the ignition key is
turned off and the battery is disconnected, an air
bag can still inflate during improper service. You
can be injured if you are close to an air bag when
it inflates. Avoid yellow connectors. They are
probably part of the air bag systems. Be sure to
follow proper service procedures, and make sure
the person performing work for you is qualified
to do so.
The air bag systems do not need regular maintenance.
Adding Equipment to Your Air
Bag-Equipped Vehicle
Q:If I add a push bumper or bicycle rack to the
front of my vehicle, will it keep the air bags
from working properly?
A:As long as the push bumper or bicycle rack is
attached to your vehicle so that the vehicle's basic
structure isn't changed, it's not likely to keep the
air bags from working properly in a crash.
Q:Is there anything I might add to the front or
sides of the vehicle that could keep the air bags
from working properly?
A:Yes. If you add things that change your vehicle's
frame, bumper system, front end or side sheet
metal or height, they may keep the air bag system
from working properly. Also, the air bag system
may not work properly if you relocate any of the
air bag sensors. If you have any questions about
this, you should contact Customer Assistance
before you modify your vehicle. The phone
numbers and addresses for Customer Assistance
are in Step Two of the Customer Satisfaction
Procedure in this manual. See ªCustomer
Satisfaction Procedureº in the Index.

2-
2-1
Section 2 Features and Controls
Here you can learn about the many standard and optional features on your vehicle, and information on starting,
shifting and braking. Also explained are the instrument panel and the warning systems that tell you if everything is
working properly
-- and what to do if you have a problem.
2
-2 Windows
2
-4 Keys
2
-6 Door Locks
2
-9 Keyless Entry System
2
-12 Liftgate/Liftgate Glass
2
-12 Theft
2
-14 Content Theft-Deterrent
2
-15 Passlock

2-16 New Vehicle ªBreak Inº
2
-16 Ignition Positions
2
-17 Starting Your Engine
2
-19 Engine Coolant Heater (If Equipped)
2
-20 Automatic Transmission Operation
2
-23 Parking Brake
2
-24 Shifting Into PARK (P)
2
-27 Shifting Out of PARK (P)
2
-27 Parking Over Things That Burn
2
-28 Engine Exhaust2
-28 Running Your Engine While You're Parked
2
-30 Locking Rear Axle
2
-30 All-Wheel Drive
2
-30 Tilt Wheel
2
-31 Turn Signal/Multifunction Lever
2
-37 Exterior Lamps
2
-41 Interior Lamps
2
-42 Mirrors
2
-46 Storage Compartments
2
-54 OnStar
System (If Equipped)
2
-57 Sunroof (If Equipped)
2
-58 HomeLink
Transmitter
2
-62 The Instrument Panel - Your
Information System
2
-64 Instrument Panel Cluster
2
-65 Warning Lights, Gages and Indicators
2
-77 Message Center
2
-83 Secondary Information Center (SIC)

2-3 Power Windows
The switches to operate all of the power windows are
located on the driver's door armrest. The front
passenger's door and the rear side doors also each
have an individual power window switch.Your power windows will work when the ignition has
been turned to ACCESSORY or RUN or when Retained
Accessory Power (RAP) is active. See ªRetained
Accessory Powerº in the Index.
Press the rear or front of the switch with the power
window symbol on it to lower or raise the window.
Driver's Express
-Down Window
The driver's window has an express down feature that
allows the window to be lowered without holding the
switch. Press and hold the rear of the power window
switch for one second to activate the express down
mode. The express down mode can be canceled at any
time by pressing the opposite side of the switch. To open
the window partway, lightly tap the power window
switch until the window is at the desired position.
Window Lockout Switch
The driver's door power window switch has a lockout
feature. This feature prevents the passenger's windows
from operating except from the driver's position when
the driver's door button labeled WINDOW LOCK
is engaged.

2-4
Keys
CAUTION:
Leaving children in a vehicle with the ignition
key is dangerous for many reasons. A child or
others could be badly injured or even killed.
They could operate the power windows or
other controls or even make the vehicle move.
Don't leave the keys in a vehicle with children.

2-5
Your vehicle has one
double
-sided key for the
ignition and all door locks
as well as the spare tire
hoist lock.
Your vehicle also has a key
that locks and unlocks the
console storage area only.
If you ever lose your keys, your dealer will be able to
assist you with obtaining replacements.
In an emergency contact roadside assistance.
See ªRoadside Assistanceº in the Index for
more information.
If you ever lock your keys in your vehicle, you may
be able to have your doors unlocked automatically with
the OnStar system if you have an active OnStar


subscription. For more information see ªOnStarº
in the Index.

2-7 Power Door Locks
Press the raised side of the
switch, marked L on either
front door to lock all the
doors at once.
Press the recessed side of the switch marked U to unlock
all the doors at once.
On the passenger side of the
liftgate opening trim there is
a power lock switch which
can be used to lock or
unlock all of the doors.The power door locks will operate at any time without
the ignition being on.
Programmable Locks
The power door locks can be programmed to
automatically lock and unlock depending on the settings
you have chosen in the Secondary Information Center
(SIC). See ªSecondary Information Centerº in the Index
for more information.
Operating the power locks may interact with the
theft
-deterrent system. See ªContent Theft-Deterrentº
in the Index.
Lockout Prevention
This feature protects you from locking your key in
the vehicle when the key is in the ignition and a door
is open.
If the power lock switch is pressed when a door is open
and the key is in the ignition, all of the doors will lock
and then the driver's door will unlock.