2002 GMC SIERRA change wheel

2-31
Higher Speed Mode (40 mph/64 kph and above)
At higher speeds the steering will operate in the higher
speed mode. This means the front and rear wheels will
turn in the same direction. This improves stability of the
vehicle during lane changes and sweeping turns.4WS TOW: The 4WS TOW mode provides enhanced
stability allowing the trailer to follow the path of the tow
vehicle more closely, especially during lane changes.
In this mode the system operates much like the
4WS mode, but is enhanced for trailer towing.
It is recommended for all types and weights of trailers.
To engage the 4WS TOW mode, press the 4 Wheel Steer
button until the 4WS and TOW indicators light up on
the instrument panel. If the TOW indicator is flashing
you will have to center the steering wheel by turning it
to the left or right. While in the 4WS TOW mode, it is
possible the steering wheel may be slightly off center.

2-33
Horn
To sound the horn, press the center pad on the
steering wheel.
Tilt Wheel
A tilt wheel allows you to adjust the steering wheel before
you drive. You can raise it to the highest level to give your
legs more room when you exit and enter your vehicle.
The tilt steering wheel lever
is located on the lower left
side of the steering column.
To tilt the wheel, hold the steering wheel and pull the
lever. Then move the steering wheel to a comfortable
position and release the lever to lock the wheel in place.
Turn Signal/Multifunction Lever
The lever on the left side of the steering column
includes the following:

Turn and Lane
-Change Signals

Headlamp High/Low
-Beam Changer

Flash
-to-Pass Feature

Windshield Wipers

Windshield Washer

Cruise Control
For information on the exterior lamps, see ªExterior
Lampsº later in this section.

2-36 Cruise Control
With cruise control, you can maintain a speed of about
25 mph (40 km/h) or more without keeping your foot on
the accelerator.
This can really help on long trips. Cruise control does
not work at speeds below about 25 mph (40 km/h).
CAUTION:

Cruise control can be dangerous where
you can't drive safely at a steady speed.
So, don't use your cruise control on
winding roads or in heavy traffic.

Cruise control can be dangerous on
slippery roads. On such roads, fast changes
in tire traction can cause needless wheel
spinning, and you could lose control.
Don't use cruise control on slippery roads.
Setting Cruise Control
CAUTION:
If you leave your cruise control switch on when
you're not using cruise, you might hit a button
and go into cruise when you don't want to.
You could be startled and even lose control.
Keep the cruise control switch off until you
want to use cruise control.
1. Move the cruise control switch to ON.
2. Get up to the speed you want.
3. Press in the SET button at the end of the lever and
release it.
4. Take your foot off the accelerator pedal.

2-40
There is a delay in the transition between the daytime
and nighttime operation of the Daytime Running Lamps
(DRL) and the automatic headlamp systems so that
driving under bridges or bright overhead street lights does
not affect the system. The DRL and automatic headlamp
system will only be affected when the light sensor sees a
change in lighting lasting longer than the delay.
To idle your vehicle with the automatic headlamp
system off, set the parking brake while the ignition is
off. Then start your vehicle. The automatic headlamp
system will stay off until you release the parking brake.
You may be able to turn off your automatic headlamp
system. See ªDaytime Running Lamps (DRL)º later in
this section for more information.
As with any vehicle, you should turn on the regular
headlamps if you need them.
Lamps On Reminder
A reminder chime will sound when your headlamps or
parking lamps are manually turned on and your ignition
is in OFF, LOCK or ACCESSORY. To disable the
chime, turn the thumbwheel all the way down. In the
automatic mode, the headlamps turn off once the
ignition key is in OFF.
Daytime Running Lamps
Daytime Running Lamps (DRL) can make it easier
for others to see the front of your vehicle during
the day. DRL can be helpful in many different driving
conditions, but they can be especially helpful in the
short periods after dawn and before sunset. Fully
functional daytime running lamps are required on all
vehicles first sold in Canada.
The DRL system will come on when the following
conditions are met:

The ignition is on,

the exterior lamp control off,

the automatic transmission is not in PARK (P),

the light sensor determines it is daytime and

the parking brake is released.
When the DRL are on, only your DRL lamps will be on.
The taillamps, sidemarker and other lamps won't be on.
The instrument panel won't be lit up either.

2-61
The main components of your instrument panel are the following:
A. Dome Lamp Override Button
B. Exterior Lamp Control
C. Air Outlets
D. Storage Compartment
E. Multifunction Lever
F. Instrument Panel Cluster
G. Shift Lever
H. Tow/Haul Selector Switch
I. Audio System
J. Comfort Control System
K. Instrument Panel Fuse BlockL. Hood Release
M. Audio Steering Wheel Controls
N. Center Instrument Panel Fuse Block
O. Tilt Lever
P. Parking Brake Release
Q. Secondary Information Center (SIC)
R. Rear Window Defogger Button
S. Compact Disc Changer
T. Ashtray
U. Accessory Power Outlet
V. Air Bag Off Switch and 4
-Wheel Steer Button
W. Glovebox

3-
3-1
Section 3 Comfort Controls and Audio Systems
In this section, you'll find out how to operate the comfort control and audio systems offered with your vehicle.
Be sure to read about the particular systems supplied with your vehicle.
3
-2 Comfort Controls
3
-4 Air Conditioning
3
-5 Heating
3
-5 Defogging and Defrosting
3
-6 Rear Window Defogger
3
-7 Ventilation System
3
-8 Audio Systems
3
-8 Setting the Clock for Systems with HR and
MIN Buttons
3
-9AM-FM Stereo with Cassette Tape Player and
Automatic Tone Control3
-13 Rear Seat Audio (RSA)
3
-16 Compact Disc Changer
3
-19 Theft-Deterrent Feature
3
-21 Audio Steering Wheel Controls
3
-22 Understanding Radio Reception
3
-22 Tips About Your Audio System
3
-23 Care of Your Cassette Tape Player
3
-24 Care of Your Compact Discs
3
-24 Care of Your Compact Disc Player
3
-24 Fixed Mast Antenna

3-21 Audio Steering Wheel Controls
You can control certain radio functions using the buttons
on your steering wheel.
PROG (Program): Press this button to play a station
you have programmed on the radio preset buttons on the
selected band. If a cassette tape is playing, press this
button to play the other side of the tape. If a compact
disc is playing in the CD changer, press this button to go
to the next available CD.
SEEK : Press the up or down arrow to seek to the
next or previous radio station and stay there. If a cassette
tape or compact disc is playing, the player will advance
with the up arrow and reverse with the down arrow.
MUTE: Press this button to silence the system. Press it
again to turn on the sound.
VOL (Volume): Press the up or down arrow to
increase or decrease volume.

4-8
Let's say the road is wet and you're driving safely.
Suddenly, an animal jumps out in front of you. You slam
on the brakes and continue braking. Here's what
happens with ABS:
A computer senses that wheels are slowing down. If one
of the wheels is about to stop rolling, the computer will
separately work the brakes at each front wheel and at
both rear wheels.The anti
-lock system can change the brake pressure
faster than any driver could. The computer is
programmed to make the most of available tire and road
conditions. This can help you steer around the obstacle
while braking hard.
As you brake, your computer keeps receiving updates on
wheel speed and controls braking pressure accordingly.