1999 GMC YUKON phone

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1-30 Adding Equipment to Your Air
Bag-Equipped Vehicle
Q:If I add a push bumper or a 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 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 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.)
Rear Seat Passengers
It's very important for rear seat passengers to buckle up!
Accident statistics show that unbelted people in the rear
seat are hurt more often in crashes than those who are
wearing safety belts.
Rear passengers who aren't safety belted can be thrown
out of the vehicle in a crash. And they can strike others
in the vehicle who are wearing safety belts.
Rear Seat Outside Passenger Positions

2-
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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 Keys
2
-3 Door Locks
2
-6 Keyless Entry System
2
-11 Rear Doors
2
-13 Theft
2
-13 Theft-Deterrent System
2
-16 Feature Customization
2
-20 Passlock

2-20 New Vehicle ªBreak-Inº
2
-21 Ignition Positions
2
-22 Starting Your Engine
2
-24 Engine Coolant Heater (If Equipped)
2
-25 Automatic Transmission Operation
2
-28 Four-Wheel Drive
2
-32 Parking Brake
2
-33 Shifting Into Park (P)
2
-35 Shifting Out of Park (P)
2
-36 Parking Over Things That Burn
2
-36 Engine Exhaust2
-37 Running Your Engine While You're Parked
2
-38 Locking Rear Axle
2
-38 Windows
2
-39 Horn
2
-39 Tilt Wheel
2
-40 Multifunction Lever
2
-46 Exterior Lamps
2
-49 Interior Lamps
2
-51 Mirrors
2
-55 Storage Compartments
2
-61 Ashtrays and Cigarette Lighter
2
-63 Sun Visors
2
-63 Universal Transmitter
2
-67 Cellular Telephone (If Equipped)
2
-67 OnStar
System (If Equipped)
2
-68 Instrument Panel
2
-70 Instrument Panel Cluster
2
-72 Warning Lights, Gages and Indicators

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Rear Compartment
The rear compartment can be used to store a small item,
like a book.
To open the rear compartment, press the release button
located at the rear of the compartment door.
Instrument Panel Cupholder
Your vehicle has a cupholder in the middle of the
instrument panel.
To use the cupholder, pull
the handle and slide the
cupholder tray open.
To close the cupholder, slide it back into the
instrument panel.
Center Floor Console
Your vehicle has a console compartment between the
bucket seats.
To open it, insert the console key into the lock and
unlock the console. Press the button in and swing the
console lid upward.
The console key is for use on the storage compartment only.
The console has a small storage bin covered by a lid.
When open, the lid provides a writing surface. The
dealer installed OnStar

cellular telephone option
replaces the writing surface.
The console has two cupholders and two storage trays
for the front passenger and driver to use.

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Your console also has a
cupholder that swings down
for the rear seat passengers
to use.
The console also contains the following components:

Rear Seat Audio System Controls

Rear Heated Seat Switches

Rear Seat Accessory Power Outlet

Six
-Disc CD Changer

Subwoofer

Audio Amplifier
Shock Sensor Adjuster

LED (Light Emitting Diode) Theft
-Deterrent
System Indicator

Cellular Telephone (If Equipped)
For more information on these components, please see
the Index for that item.
Armrest Storage Compartment
Your vehicle has a center armrest storage compartment
in the rear seat.
Other Storage Compartments
Your vehicle includes a number of storage
compartments for storage of often
-used items.
Your vehicle has a storage pocket on each of the front
doors. You can use the pocket to store a variety of
small items.

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2-62 Accessory Power Outlets
Two auxiliary power outlets are located near the
cigarette lighter. Use these outlets to power mobile
telephones or other devices designed to operate with
vehicle electrical systems.
One auxiliary power outlet
is located at the rear of the
center floor console, for rear
seat passengers to use.
The other auxiliary power
outlet is located in the rear
cargo area on the
passenger's side.

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2-67 Accessories
Accessories for the universal transmitter are available
from the manufacturer of the unit. If you would like
additional information, please call 1
-800-355-3515.
Cellular Telephone (If Equipped)
Your vehicle has been prewired for the dealer
installation of a cellular telephone. A fixed mobile
system is available. Voice activation and hands
-free
operation are standard features. For more information,
contact your dealer. A user's guide is provided with
the telephone.
OnStar
System (If Equipped)
This system may be ordered through your dealer if you
have the proper fixed cellular telephone. The following
services are available 24 hours a day:

Roadside Service with Location

Emergency Services Button

Remote Door Unlock

Theft Detection/Notification and Stolen
Vehicle Tracking

Automatic Notification of Air Bag Deployment

Customer Convenience Services.
For more information, contact your dealer.

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CD Adapter Kits
It is possible to use a CD 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 TAPE AUX button for five
seconds. The tape symbol on the display will flash
for two seconds, indicating the feature is active.
4. Insert the adapter. 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 any
of the music sources including AM
-FM, cassette tapes
and CDs. 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 override the Rear Seat Audio
(RSA) controls. Note that if the front seat passengers
switch the source for the primary radio to a remote
source, the RSA will play the same remote source.

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The rear speakers will be muted when the RSA power is
turned on. You may operate the RSA functions even
when the primary radio is off.
Note that this feature is intended for rear seat passengers.
The following function is controlled by the primary
radio knob:
PWR
-VOL: Push this knob twice to turn RSA off.
The following functions are controlled by the RSA
system buttons:
PWR: Press this button to turn RSA on or off.
VOL: Press this knob lightly so it extends. Turn the
knob clockwise to increase volume and
counterclockwise to decrease volume. Push the knob
back into its stored position when you're not using it.
The upper VOL knob controls the upper headphone and
the lower VOL knob controls the lower headphone.
AM
-FM: Press this button to switch between AM, FM1
and FM2. If the front passengers are already listening to
AM
-FM, the RSA controller will not switch between the
bands and cannot change the frequency.SEEK: While listening to AM
-FM, press the up arrow
to tune to the next higher station and stay there. Press
the down arrow to tune to the next lower station and stay
there. The sound will mute while seeking. The SEEK
button is inactive if the AM
-FM mode on the front radio
is in use.
While listening to a cassette tape, press the up arrow to
hear the next selection on the tape. Press the down arrow
to go back to the previous selection. The SEEK button is
inactive if the tape mode on the front radio is in use.
While listening to a CD, press the up arrow to hear the
next selection on the CD. Press the down arrow to go
back to the start of the current selection (if more than
eight seconds have played). The SEEK button is inactive
in the CD mode if the remote CD player (if equipped) or
the CD changer is in use.
SCAN: Press and hold SEEK until the radio goes into
SCAN mode. SCAN allows you to listen to stations for
a few seconds. The receiver will continue to scan and
momentarily stop at each station until you press SEEK
again. The SCAN function is inactive if the AM
-FM
mode on the front radio is in use.