2002 GMC YUKON DENALI Owners Manual

3-9 Defogging and Defrosting
On cool, humid days, use defog to keep the windshield
and side windows clear. Use defrost to remove fog or ice
from the windshield in extremely humid or cold
conditions. Use defrost with the temperature knob
toward the red area and the fan knob turned all the
way clockwise.
Rear Window Defogger
The lines running across the rear window are the
defogger grid. The lines warm the glass.
To turn on the rear
window defogger, press this
button located below the
mode knob.The rear window defogger will only work if the ignition
is in RUN. For best results, clear the window of as much
snow or ice as possible first.
The defogger will shut itself off after several minutes.
If you need additional warming time, press the button
again. You can turn the defogger off at any time by
pressing the button.
Your vehicle is equipped with heated outside mirrors.
The rear window defogger button will also activate the
heated outside mirrors.
Do not attach a temporary vehicle license, tape or decals
across the defogger grid on the rear window.
NOTICE:
Don't use a razor blade or something else sharp
on the inside of the rear window. If you do, you
could cut or damage the warming grid, and the
repairs wouldn't be covered by your warranty.

3-10 Ventilation System
Your vehicle has air outlets
in the center and on the
sides of the instrument
panel. There are also two
outlets located on the back
of the center console for the
rear seat passengers.
You can move the outlets from side
-to-side and the
louvers up and down to direct the flow of air. The
driver's and passenger's side outlets can be closed. The
two outlets, located on the rear of the center console, can
also be closed. Turn the thumbwheel to the left to shut
off air flow or to the right to allow air flow. When you
close an outlet, it will increase the flow of air coming
out of any outlets that are open. The center outlet,
located on the instrument panel, does not completely
shut off airflow.For mild outside temperatures when little heating or
cooling is needed, use outside air to direct outside air
through your vehicle. Air will flow through the
instrument panel outlets.
Your vehicle's ventilation system supplies outside air
to the inside of your vehicle when it is moving. With
the side windows closed, air will flow into the front air
inlet grilles, through the vehicle, and out the air
exhaust valves.
Outside air will also enter the vehicle when the heater or
the air conditioning fan is running, unless you have the
recirculation button pushed in. For more information on
the recirculation button, see ªAir Conditioningº earlier
in this section.

3-11
Ventilation Tips

Keep the hood and front air inlet free of ice, snow or
any other obstruction (such as leaves). The heater
and defroster will work far better, reducing the
chance of fogging the inside of your windows.

When you enter a vehicle in cold weather, turn the
fan knob all the way to the right for a few moments
before driving. This helps clear the intake ducts of
snow and moisture, and reduces the chance of
fogging the inside of your windows.

Keep the air path under the front seats clear of
objects. This helps air to circulate throughout
your vehicle.

The use of non
-GM approved hood air deflectors
may adversely affect the performance of the heating
and air conditioning system.
Audio Systems
Your audio system has been designed to operate easily
and give years of listening pleasure. You will get the
most enjoyment out of it if you acquaint yourself with it
first. Find out what your audio system can do and how
to operate all of its controls to be sure you're getting the
most out of the advanced engineering that went into it.
Your vehicle has a feature called Retained Accessory
Power (RAP). With RAP, you can play your audio
system even after the ignition is turned off. See
ªRetained Accessory Powerº in the Index.
Setting the Clock
Press and hold HR until the correct hour appears on the
display. Press and hold MN until the correct minute
appears on the display. To display the clock with the
ignition off, press RECALL or HR/MN and the time
will be displayed for a few seconds. There is an initial
two
-second delay before the clock goes into the
time
-set mode.

3-12 AM-FM Stereo with Cassette
Tape Player (Bose

)
Included with this audio system are ten Bose
speakers,
an Acoustimass
bass module and a seven channel Bose
amplifier. See your dealer for details.
Playing the Radio
PWR (Power): Press this knob to turn the system on
and off.
VOL (Volume): Turn this knob clockwise to increase
volume. Turn it counterclockwise to decrease volume.
The knob is capable of being turned continuously.REAR DSPL (Display): When the main radio is turned
on, press this button to see the rear seat audio settings
displayed on the main radio. Press it again to turn the
rear seat audio display off. See ªRear Seat Audioº in the
Index for more information.
RECALL: Press this button to display the station being
played or to display the clock. Clock display is available
with the ignition turned off.
SCV (Speed
-Compensated Volume): With SCV, your
audio system adjusts automatically to make up for road
and wind noise as you drive. Set the volume at the
desired level. Turn the control ring behind the upper
knob clockwise to adjust the SCV. Each notch on the
control ring allows for more volume compensation at
faster vehicle speeds. Then, as you drive, SCV
automatically increases the volume, as necessary, to
overcome noise at any speed. The volume level should
always sound the same to you as you drive. If you don't
want to use SCV, turn the control ring counterclockwise.

3-13
Finding a Station
AM FM: Press this button to switch between AM, FM1
and FM2. The display will show your selection.
TUNE: Press this knob lightly so it extends. Turn it to
choose radio stations. Push the knob back into its stored
position when you're not using it.
SEEK : Press the right or left arrow to seek to the
next or previous station and stay there. The sound will
mute while seeking.
To scan stations, press and hold either SEEK arrow for
two seconds until SCAN appears on the display. The
radio will scan to a station, play for a few seconds, then
go on to the next station. Press either SEEK arrow again
to stop scanning. The radio will scan to stations with a
strong signal only. The sound will mute while scanning.
P.SCAN (Preset Scan): The preset scan button lets you
scan through your favorite stations stored on your
pushbuttons. Select either the AM, FM1 or FM2 mode
and then press P.SCAN. It will scan through each station
stored on your pushbuttons and stop for a few seconds
before continuing to scan through all of the pushbuttons.Press P.SCAN again or one of the pushbuttons to stop
scanning and listen to a specific preset station. P.SCAN
will light up on the display while in this mode. If one of
the stations stored on a pushbutton is too weak for the
location you are in, the radio display will show the
channel number (P1 through P6) for several seconds
before advancing to the next preset station.
Setting Preset Stations
The six numbered pushbuttons let you return to
your favorite stations. You can set up to 18 stations
(six AM, six FM1 and six FM2) by performing the
following steps:
1. Turn the radio on.
2. Press AM FM to select AM, FM1 or FM2.
3. Tune in the desired station.
4. Press and hold one of the six pushbuttons. The sound
will mute. When it returns, release the pushbutton.
Whenever you press that numbered pushbutton, the
station you set will return.
5. Repeat the steps for each pushbutton.

3-14
Setting the Tone (Bass/Treble)
BASS: Press this knob lightly so it extends. Turn the
knob clockwise to increase bass and counterclockwise to
decrease bass.
TREB (Treble): Press this knob lightly so it extends.
Turn the knob clockwise to increase treble and
counterclockwise to decrease treble. If a station is weak
or noisy, you may want to decrease the treble.
Push these knobs back into their stored positions when
you're not using them.
Adjusting the Speakers (Balance/Fade)
BAL (Balance): Press this knob lightly so it extends.
Turn the knob clockwise to adjust sound to the right
speakers and counterclockwise to adjust sound to the
left speakers. The middle position balances the sound
between the speakers.
FADE: Press this knob lightly so it extends. Turn the
knob clockwise to adjust the sound to the front speakers
and counterclockwise for the rear speakers. The middle
position balances the sound between the speakers.
Push these knobs back into their stored positions when
you're not using them.Playing a Cassette Tape
Your tape player is built to work best with tapes that are
up to 30 to 45 minutes long on each side. Tapes longer
than that are so thin they may not work well in
this player.
To load a cassette tape with the ignition off, press
EJECT or RECALL. Then, insert the cassette tape.
If the ignition is on but the radio is off, the tape will
begin playing.
Once the tape is playing, use the VOL, BAL, FADE,
BASS and TREB controls just as you do for the radio.
The tape symbol and a direction arrow will be on the
display whenever a tape is being played. Anytime a tape
is inserted, the top side is selected for play first.
The player automatically senses if the cassette tape is
metal or CrO
2 and adjusts for best playback sound.
If an error appears on the display, see ªCassette Tape
Messagesº later in this section.
1 PREV (Previous): Press this pushbutton or the left
SEEK arrow to search for the previous selection. A
minimum three
-second blank gap is required for the
player to stop at the beginning of the selection. The tape
direction arrow will blink while in previous mode.

3-15
2 PROG (Program): Press this pushbutton to switch
from one side of the tape to the other.
3 NEXT: Press this pushbutton or the right SEEK arrow
to search for the next selection. A minimum
three
-second blank gap is required for the player to stop
at the beginning of the selection. The tape direction
arrow will blink while in next mode. The sound will
mute while searching for the next selection.
REV 4 (Reverse): Press this pushbutton to rapidly
reverse the tape. Press this pushbutton again to stop
reversing the tape. The radio will play the last selected
station while reversing the tape. The tape direction
arrow will blink while in reverse mode.

5 (Dolby): Press this pushbutton to reduce cassette
tape noise. The double
-D symbol will appear on the
display while the player is in this mode.
Dolby Noise Reduction is manufactured under a license
from Dolby Laboratories Licensing Corporation. Dolby
and the double
-D symbol are trademarks of Dolby
Laboratories Licensing Corporation.FWD 6 (Forward): Press this pushbutton to rapidly
forward the tape. Press this pushbutton again to stop
forwarding the tape. The radio will play the last selected
station while forwarding the tape. The tape direction
arrow will blink while in forward mode.
AM FM: Press this button to listen to the radio when
playing a tape or CD.
CD TAPE: Press this button to play a tape when
listening to the radio. Press this button to switch
between the tape player and CD changer if all are
loaded. When a tape is playing, a lighted arrow will
appear on the display and show the direction of play.
(If the radio is turned off, the tape stays in the player
and will resume playing at the point where it stopped.)
EJECT: Press this button to stop a tape when it is
playing or to eject a tape when it is not playing. Eject
may be activated with the radio off. Cassette tapes may
be loaded with the radio and vehicle off if this button is
pressed first.

3-16
Cassette Tape Messages
CLN (Clean): If this message appears on the display,
the cassette tape player needs to be cleaned. It will still
play tapes, but you should clean it as soon as possible to
prevent damage to the tapes and player. See ªCare of
Your Cassette Tape Playerº in the Index.
CD Adapter Kits
It is possible to use a portable CD player adapter kit
with your cassette tape player after activating the bypass
feature on your tape player.
To activate the bypass feature, use the following steps:
1. Turn the ignition to RUN or ACCESSORY.
2. Turn the radio off.
3. Press and hold the CD TAPE button for five seconds.
The tape symbol on the display will flash for
two seconds, indicating the feature is active.
4. Insert the adapter into the cassette slot. It will power
up the radio and begin playing.
This override routine will remain active until EJECT
is pressed.Rear Seat Audio (RSA)
This feature allows rear seat passengers to listen to and
control any of the music sources (AM
-FM, cassette
tapes and CDs) through the Rear Seat Audio (RSA)
controller. However, the rear seat passengers can only
control the music sources that the front seat passengers
are not listening to. For example, rear seat passengers
may listen to a cassette tape through headphones while
the driver listens to the radio through the front speakers.
The rear seat passengers have control of the volume for
each set of headphones. Be aware that the front seat
audio controls always have priority over the RSA
controls. If the front seat passengers switch the source
for the main radio to a remote source, the RSA will play
the same remote source. The rear speakers will be muted
when the RSA power is turned on. You may operate the
RSA functions even when the main radio is off.
Primary Radio Controls
The following function is controlled by the knob on the
main radio:
PWR (Power): Push this knob twice to turn RSA off.