2000 GMC YUKON buttons

2-9
NOTICE:
When replacing the battery, use care not to touch
any of the circuitry. Static from your body
transferred to these surfaces may damage
the transmitter.
To replace the battery in the keyless entry transmitter:
1. Insert a dime in the slot between the covers of the
transmitter housing near the key ring hole. Remove
the bottom by twisting the dime.
2. Remove and replace the battery with a three
-volt
CR2032 or equivalent battery, positive (+) side up.
3. Align the covers and snap them together.
4. Resynchronize the transmitter.
5. Check the operation of the transmitter.
Resynchronization
Resynchronization may be necessary due to the security
method used by this system. The transmitter does not
send the same signal twice to the receiver. The receiver
will not respond to a signal that has been sent
previously. This prevents anyone from recording
and playing back the signal from the transmitter.
To resynchronize your transmitter, stand close to your
vehicle and press and hold the LOCK and UNLOCK
buttons on the transmitter at the same time for seven
seconds. The door locks should cycle to confirm
synchronization. If the locks do not cycle, see your
dealer for service.

2-26
Shifting to NEUTRAL
To shift the transfer case to NEUTRAL, first make sure
the vehicle is parked so that it will not roll:
1. Set the parking brake.
2. Start the vehicle or turn the ignition to RUN.
3. Connect the vehicle to the towing vehicle.
4. Put the transmission in NEUTRAL (N).
5. Shift the transfer case to 2HI.
6. Simultaneously press and hold the 2HI and 4LO
buttons for 10 seconds. The red NEUTRAL light
will come on when the transfer case shift to
NEUTRAL is complete.
7. Shift the transmission to REVERSE (R) for one
second, then shift the transmission to DRIVE (D)
for one second.
8. Turn the ignition to OFF.
9. Place the transmission shift lever in PARK (P).
10. Release the parking brake prior to towing.Shifting Out of NEUTRAL
To shift out of NEUTRAL:
1. Set the parking brake and apply the regular brake pedal.
2. Shift the transmission to NEUTRAL (N) and turn the
ignition to RUN with the engine off.
3. Press the button for the desired transfer case shift
position (2HI, 4HI, AUTO 4WD or 4LO).
4. After the transfer case has shifted out of NEUTRAL
the red light will go out.
5. You may start the engine and shift the transmission
to the desired position.

2-63
Your vehicle's engine should be turned off while
programming the transmitter. Follow these steps to
program up to three channels:
1. If you have previously programmed a transmitter
channel, proceed to Step 2. Otherwise, hold down
the two outside buttons on the HomeLink
Transmitter until the indicator light begins to flash
rapidly (after 20 seconds). Then release the buttons.
This procedure initializes the memory and erases any
previous settings for all three channels.
2. Decide which one of the three channels you want to
program. Hold the end of the hand
-held transmitter
about 2 to 5 inches (5 to 13 cm) away from the
surface of the HomeLink Transmitter so that you
can still see the indicator light.
3. Using both hands, press the hand
-held transmitter
button and the desired button on the HomeLink
Transmitter. Continue to press both buttons through
Step 4.
4. Hold down both buttons until you see the light on
the HomeLink Transmitter flash rapidly. The rapid
flashing indicates that the HomeLink Transmitter has
been programmed. Release both buttons once the
light starts to flash rapidly.If you have trouble programming the HomeLink
Transmitter, make sure that you have followed the
directions exactly as described and that the battery in the
hand
-held transmitter is not dead. If you still cannot
program it, rotate the hand
-held transmitter end over end
and try again. The HomeLink Transmitter may not work
with older garage door openers that do not meet current
Federal Consumer Safety Standards. If you cannot
program the transmitter after repeated attempts, refer to
ªTraining a Garage Door Opener with Rolling Codesº
later in this section or contact the manufacturer of the
unit at 1
-800-355-3515.
Be sure to keep the original hand
-held transmitter
in case you need to erase and reprogram the
HomeLink Transmitter.
Canadian Owners: During programming, the
hand
-held transmitter may automatically stop
transmitting after one or two seconds. In this case,
you should press and re
-press the button on the
hand
-held transmitter every two seconds without ever
releasing the button on the HomeLink Transmitter.
Release both buttons when the indicator light on the
HomeLink Transmitter begins to flash rapidly.

2-65
3. Return to the HomeLink Transmitter in your vehicle
and firmly press and release the HomeLink
Transmitter button you have already programmed for
two to three seconds. Press and release the button
again (you may need to do this step up to three times)
to make sure that the HomeLink Transmitter has been
trained to the garage door opener motor head unit.
Check that the training was successful. The motor
head unit indicator light should no longer be flashing.
The garage door opener should now recognize the
HomeLink Transmitter. You may either use the
HomeLink Transmitter or the hand
-held transmitter
to open the garage door.
If after following these instructions, you still have
problems training the garage door opener, call the
manufacturer of the unit at 1
-800-355-3515.
Erasing Channels
To erase all three programmed channels, hold down the
two outside buttons until the indicator light begins to
flash (after 20 seconds). Release both buttons.
Accessories
Accessories for the HomeLink
Transmitter are
available from the manufacturer of the unit. If you
would like additional information, please call
1
-800-355-3515.
OnStar
System (If Equipped)
OnStar is a vehicle communications service. The
following services are available through a subscription
with OnStar and are available 24 hours a day:
Emergency Services

Automatic Notification of Air Bag Deployment

Stolen
-Vehicle Tracking

Roadside Assistance with Location

Remote Diagnostics

OnStar MED
-NET

Accident Assist
Convenience Services

Remote Door Unlock

Route Support

Concierge Services

Ride Assist
A complete user's guide is provided with the OnStar
System. For more information, contact OnStar
1
-888-ONSTAR7.

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
-3 Heater and Air Conditioning Comfort
Controls (If Equipped)
3
-5 Electronic Climate Control System
(If Equipped)
3
-11 Air Conditioning
3
-12 Heating
3
-12 Defogging and Defrosting
3
-12 Rear Window Defogger (If Equipped)
3
-13 Ventilation System
3
-15 Audio Systems
3
-15 Setting the Clock for Systems with
SET Button
3
-15 Setting the Clock for Systems with HR
and MN Buttons
3
-15 AM-FM Stereo3
-17 AM-FM Stereo with Cassette Tape Player
(If Equipped)
3
-19 AM-FM Stereo with Cassette Tape Player
and Automatic Tone Control (If Equipped)
3
-24 AM-FM Stereo with Compact Disc Player
and Automatic Tone Control (If Equipped)
3
-28 Rear Seat Audio (If Equipped)
3
-29 Remote Compact Disc Player (If Equipped)
3
-31 Theft-Deterrent Feature (If Equipped)
3
-34 Understanding Radio Reception
3
-34 Tips About Your Audio System
3
-35 Care of Your Cassette Tape Player
3
-37 Care of Your Compact Discs
3
-37 Care of Your Compact Disc Player
3
-37 Fixed Mast Antenna

3-15
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 its controls, to be sure you're getting the
most out of the advanced engineering that went into it.
Setting the Clock for Systems with
SET Button
Press SET. Within five seconds, press and hold the
SEEK right arrow until the correct minute appears on
the display. Press and hold the SEEK left arrow until
the correct hour appears on the display.
Setting the Clock for Systems with HR
and MN Buttons
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.
AM-FM Stereo
Playing the Radio
VOLUME: This knob turns the system on and off and
controls the volume. To increase volume and turn the radio
on, turn the knob clockwise. Turn it counterclockwise to
decrease volume and turn the radio off.
RECALL: Display the time with the ignition off by
pressing the recall knob. When the radio is playing,
press this knob to recall the station frequency.
Finding a Station
AM
-FM: Press the lower knob to switch between
AM and FM. The display shows your selection.
TUNE: Turn the lower knob to tune in radio stations.

3-16
SEEK: Press the right arrow to tune to the next higher
station and the left arrow to tune to the next lower
station and stay there.
SCAN:Select either AM, FM1 or FM2 mode and
press both SEEK buttons to listen to a few seconds of
each radio station. SCAN will light up on the display.
The radio will automatically SCAN to the next higher
station, play that station for a few seconds, then SCAN
to the next higher station. Press VOLUME or both
SEEK buttons to stop scanning.
PUSHBUTTONS: The four numbered pushbuttons let
you return to your favorite stations. You can set up to
14 stations (seven AM and seven FM). Just:
1. Turn the radio on.
2. Press AM
-FM to select the band.
3. Tune in the desired station.
4. Press SET. (SET will appear on the display.)
5. Press one of the four pushbuttons within five
seconds. Whenever you press that numbered button,
the station you set will return.
6. Repeat the steps for each pushbutton.In addition to the four stations already set, up to three
more stations may be preset on each band by pressing
two adjoining buttons at the same time. Just:
1. Tune in the desired station.
2. Press SET. (SET will appear on the display.)
3. Press two adjoining buttons at the same time,
within five seconds. Whenever you press the same
two buttons, the station you set will return.
4. Repeat the steps for each pair of pushbuttons.
Setting the Tone
BASS: Slide this lever up or down to increase or
decrease bass.
TREB: Slide this lever up or down to increase or
decrease treble. If a station is weak or noisy, you may
want to decrease the treble.
Adjusting the Speakers
BAL: Turn the control behind the upper knob to move
the sound to the left or right speakers. The middle
position balances the sound between the speakers.
FADE: Turn the control behind the lower knob to move
the sound to the front or rear speakers. The middle
position balances the sound between the speakers.

3-17 AM-FM Stereo with Cassette Tape Player
(If Equipped)
Playing the Radio
VOLUME: This knob turns the system on and off and
controls the volume. To increase volume and turn the radio
on, turn the knob clockwise. Turn it counterclockwise to
decrease volume and turn the radio off.
RECALL: Display the time with the ignition off by
pressing this knob. When the radio is playing, press this
knob to recall the station frequency.Finding a Station
AM
-FM: Press the lower knob to switch between
AM, FM1 and FM2.
TUNE: Turn the lower knob to tune in radio stations.
SEEK: Press the right arrow to tune to the next
higher station and the left arrow to tune to the next
lower station.
PUSHBUTTONS: The four numbered pushbuttons let
you return to your favorite stations. You can set up to
21 stations (seven AM, seven FM1 and seven FM2). Just:
1. Turn the radio on.
2. Press AM
-FM to select the band.
3. Tune in the desired station.
4. Press SET. (SET will appear on the display.)
5. Press one of the four pushbuttons within five
seconds. Whenever you press that numbered button,
the station you set will return.
6. Repeat the steps for each pushbutton.