GMC 1999 Suburban User manual

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The 1999 GMC Yukon and Suburban Owner’s Manual
1-1 Seats and Restraint Systems
This section tells you how to use your seats and safety belts properly. It also explains the air bag system.
2-1 Features and Controls
This section explains how to start and operate your vehicle.
3-1 Comfort Controls and Audio Systems
This section tells you how to adjust the ventilation and comfort controls and how to operate your audio system.
4-1 Your Driving and the Road
Here you’ll find helpful information and tips about the road and how to drive under different conditions.
5-1 Problems on the Road
This section tells you what to do if you have a problem while driving, such as a flat tire or overheated engine, etc.
6-1 Service and Appearance Care
Here the manual tells you how to keep your vehicle running properly and looking good.
7-1 Maintenance Schedule
This section tells you when to perform vehicle maintenance and what fluids and lubricants to use.
8-1 Customer Assistance Information
This section tells you how to contact GMC for assistance and how to get service and owner publications.
It also gives you information on “Reporting Safety Defects” on page 8-10.
9-1 Index
Here’s an alphabetical listing of almost every subject in this manual. You can use it to quickly find
something you want to read.

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GENERAL MOTORS, GM, the GM Emblem, GMC,
the GMC Emblem and the name YUKON and the name
SUBURBAN are registered trademarks of General
Motors Corporation.
This manual includes the latest information at the time
it was printed. We reserve the right to make changes
in the product after that time without further notice.
For vehicles first sold in Canada, substitute the name
“General Motors of Canada Limited” for GMC
whenever it appears in this manual.
Please keep this manual in your vehicle, so it will be
there if you ever need it when you’re on the road. If you
sell the vehicle, please leave this manual in it so the new
owner can use it.
We support voluntary
technician certification.
For Canadian Owners Who Prefer a
French Language Manual:
Aux propriétaires canadiens: Vous pouvez vous
procurer un exemplaire de ce guide en français chez
votre concessionaire ou au:
DGN Marketing Services Ltd.
1577 Meyerside Dr.
Mississauga, Ontario L5T 1B9
Litho in U.S.A.
E
Copyright General Motors Corporation 1998
X9909 B First Edition All Rights Reserved

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How to Use this Manual
Many people read their owner’s manual from beginning
to end when they first receive their new vehicle. If you
do this, it will help you learn about the features and
controls for your vehicle. In this manual, you’ll find
that pictures and words work together to explain
things quickly.
Index
A good place to look for what you need is the Index in
back of the manual. It’s an alphabetical list of what’s in
the manual, and the page number where you’ll find it.
Safety Warnings and Symbols
You will find a number of safety cautions in this book.
We use a box and the word CAUTION to tell you
about things that could hurt you if you were to ignore
the warning.
CAUTION:
These mean there is something that could hurt
you or other people.
In the caution area, we tell you what the hazard is. Then
we tell you what to do to help avoid or reduce the
hazard. Please read these cautions. If you don’t, you or
others could be hurt.

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You will also find a circle
with a slash through it in
this book. This safety
symbol means “Don’t,”
“Don’t do this” or “Don’t
let this happen.”
Vehicle Damage Warnings
Also, in this book you will find these notices:
NOTICE:
These mean there is something that could
damage your vehicle.
In the notice area, we tell you about something that can
damage your vehicle. Many times, this damage would
not be covered by your warranty, and it could be costly.
But the notice will tell you what to do to help avoid
the damage.
When you read other manuals, you might see
CAUTION and NOTICE warnings in different colors or
in different words.
You’ll also see warning labels on your vehicle. They use
the same words, CAUTION or NOTICE.

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For example,
these symbols
are used on an
original battery:
CAUTION
POSSIBLE
INJURY
PROTECT
EYES BY
SHIELDING
CAUSTIC
BATTERY
ACID COULD
CAUSE
BURNS
AVOID
SPARKS OR
FLAMES
SPARK OR
FLAME
COULD
EXPLODE
BATTERY
These symbols
are important
for you and
your passengers
whenever your
vehicle is
driven:
DOOR LOCK
UNLOCK
FASTEN
SEAT
BELTS
POWER
WINDOW
AIR BAG
These symbols
have to do with
your lamps:
MASTER
LIGHTING
SWITCH
TURN
SIGNALS
PARKING
LAMPS
HAZARD
WARNING
FLASHER
DAYTIME
RUNNING
LAMPS
FOG LAMPS
These symbols
are on some of
your controls:
WINDSHIELD
WIPER
WINDSHIELD
WASHER
WINDSHIELD
DEFROSTER
REAR
WINDOW
DEFOGGER
VENTILATING
FAN
These symbols
are used on
warning and
indicator lights:
ENGINE
COOLANT
TEMP
BATTERY
CHARGING
SYSTEM
BRAKE
COOLANT
ENGINE OIL
PRESSURE
ANTI-LOCK
BRAKES
Here are some
other symbols
you may see:
FUSE
LIGHTER
HORN
SPEAKER
FUEL
Vehicle Symbols
These are some of the symbols you may find on your vehicle.

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Model Reference
This manual covers these models:
4-Door Utility Suburban

1-
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1-1
Section 1 Seats and Restraint Systems
Here you’ll find information about the seats in your vehicle and how to use your safety belts properly. You can also
learn about some things you should not do with air bags and safety belts.
1-2 Seats and Seat Controls
1-14 Safety Belts: They’re for Everyone
1-19 Here Are Questions Many People Ask About
Safety Belts -- and the Answers
1-20 How to Wear Safety Belts Properly
1-20 Driver Position
1-28 Safety Belt Use During Pregnancy
1-29 Right Front Passenger Position
1-29 Air Bag System
1-36 Center Passenger Position
1-38 Rear Seat Passengers
1-41 Rear Safety Belt Comfort Guides for Children
and Small Adults
1-43 Children
1-46 Child Restraints
1-60 Larger Children
1-63 Safety Belt Extender
1-63 Checking Your Restraint Systems
1-63 Replacing Restraint System Parts After
a Crash

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1-2
Seats and Seat Controls
This section tells you about the seats -- how to adjust
them and fold them up and down. It also tells you about
reclining front seatbacks and head restraints.
Manual Front Seat
CAUTION:
You can lose control of the vehicle if you try to
adjust a manual driver’s seat while the vehicle is
moving. The sudden movement could startle and
confuse you, or make you push a pedal when you
don’t want to. Adjust the driver’s seat only when
the vehicle is not moving.
If your vehicle has a manual
bucket, split bench or full
bench seat, you can adjust it
with this lever at the front
of the seat.
Slide the lever at the front of the seat toward the
passenger’s side to unlock it. Using your body, slide the
seat to where you want it. Then, release the lever and try
to move the seat with your body to make sure the seat is
locked into place.

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Power Seat(s) (If Equipped)
If your vehicle has a power seat on the driver’s or
passenger’s side, you can adjust it with these controls at
the outside edge of the seat. The switch is located on the
side of the seat, next to the door.
You can use the round center knob to move the seat to
where you want it. To raise the seat, move the knob up.
To lower the seat, move the knob down. To move the
seat forward, move the knob toward the front of the
vehicle. To move the seat rearward, move the knob
toward the rear of the vehicle.
You can also raise and lower the front and rear of the seat.
To raise the front of the seat, move the front lever up. To
lower the front of the seat, move the front lever down. To
raise the rear of the seat, move the rear lever up. To lower
the rear of the seat, move the rear lever down.
The switch located at the front of this control panel
is for the power lumbar adjustment, which is
explained next.
Power Lumbar Adjustment (If Equipped)
If you have power lumbar
adjustment, you can
increase or decrease lumbar
support in an area of the
lower seatback.
To increase support, press and hold the front of the
rocker switch. Let go of the switch when the lower
seatback reaches the desired level of support.
To decrease support, press and hold the rear of the
rocker switch. Let go of the switch when the lower
seatback reaches the desired level of support.

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Heated Front Seats (If Equipped)
The control for the driver’s side heated seat is located on
the left side of the seat. The control for the right front
passenger is located on the right side of the passenger’s
seat. Move the switch forward to MED or HIGH
temperature to turn on the heating elements in the seat.
The right front passenger’s safety belt must be buckled
before the heating elements in that seat will operate.
To turn the heated seats off, move the switch rearward
to OFF.
Reclining Front Seatbacks
To adjust the seatback, move the lever rearward.
Release the lever to lock the seatback where you want it.
Move the lever again rearward and the seatback will go
to an upright position.

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But don’t have a seatback reclined if your vehicle
is moving.
CAUTION:
Sitting in a reclined position when your vehicle is
in motion can be dangerous. Even if you buckle
up, your safety belts can’t do their job when
you’re reclined like this.
The shoulder belt can’t do its job because it
won’t be against your body. Instead, it will be in
front of you. In a crash you could go into it,
receiving neck or other injuries.
The lap belt can’t do its job either. In a crash the
belt could go up over your abdomen. The belt
forces would be there, not at your pelvic bones.
This could cause serious internal injuries.
For proper protection when the vehicle is in
motion, have the seatback upright. Then sit
well back in the seat and wear your safety
belt properly.

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Head Restraints
Slide the head restraint up or down so that the top of the
restraint is closest to the top of your ears. This position
reduces the chance of a neck injury in a crash.
Seatback Latches (2-Door Utility)
CAUTION:
If the seatback isn’t locked, it could move
forward in a sudden stop or crash. That could
cause injury to the person sitting there. Always
press rearward on the seatback to be sure it is
locked.
The front seatback folds forward to let you access the
rear of the vehicle.
To fold a seatback forward,
pull this lever forward and
tilt the seatback forward.
To return the seatback to the upright position, just push
the seatback rearward until it latches.
After returning the seatback to its upright position, pull
the seatback forward to make sure it is locked.

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Easy Entry Seat (2-Door Utility)
CAUTION:
If any easy entry seat isn’t locked, it can move. In
a sudden stop or crash, the person sitting there
could be injured. And, even if there is no crash or
sudden stop, a driver sitting in an unlocked easy
entry seat could be startled by the sudden
movement and hit the wrong control or pedal,
causing an accident. After you’ve used it, be sure
to push rearward on any easy entry seat to be
sure it is locked.
The driver and passenger front bucket seat and the 60/40
split bench seat of your vehicle have an easy entry
feature. This makes it easy to get in and out of the
rear seat. On vehicles equipped with the power driver’s
seat, only the passenger’s front seat will have the easy
entry feature.
To operate the seat, pull
forward on the top of the
lever located at the side of
the seatback, and tilt the
seatback forward toward
the front of the vehicle.
When you do, the seat bottom will release. Just pull or
push the seat forward until it stops.
To return the seat to its regular position, return the
seatback to its upright position, then push the whole seat
rearward until it latches.
After returning the seat to its regular position, try to
move the seat with your body, to make sure the seat is
locked into place.

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Rear Seats
CAUTION:
If a head restraint is not installed on the seatback
or stored in the vehicle properly, it could be
thrown about the vehicle in a crash or sudden
maneuver. People in the vehicle could be injured.
Remove the head restraints only when you need
to fold the seat, and be sure that the head
restraints are stored securely in the storage bag
and placed under the rear seat. When the seat is
returned to the passenger position, be sure the
head restraints are installed properly.
Folding the Rear Seat (2-Door Models)
If your vehicle has a rear seat, the seat can be folded flat
for more cargo space. Before folding, make sure that
nothing is under or in front of the seat. When the seat is
folded, it will lay almost flat on the floor.
When folding the seat, first
remove the head restraints.
Push the button at the top of
the seatback and slide the
head restraint out of the
height-adjust tubes.
Detach the storage bag from the back of the rear seat.
Then, put the head restraints in the storage bag and place
the bag in the rear seat footwell, under the seat.

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To fold the seat, pull on the release handle at the bottom
of the seat cushion marked RELEASE. When you release the seat cushion, the seatback is automatically released. Pull the loop on the seatback
forward and fold the seatback onto the seat cushion.
To return the seat to the passenger position, just lift up
on the seatback and push it rearward until it latches.
After returning the seat to the passenger position, pull
forward on the seatback to make sure it is locked into
place. Also, return the safety belts and head restraints to
their original positions, so they will be available for rear
seat passengers to use.

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Folding Rear Seats (4-Door Models)
The rear seat of the 4-Door Utility or the second seat of
a Suburban may have a 60/40 seat, either side may be
folded down to give you more cargo space.
Before folding, place the latch portion of the center
safety belt in the center armrest. That way, the center
safety belt will be out of the way when the seat is folded
and also will be easily available for passengers to use
when the seat is returned to the passenger position. Also,
make sure that nothing is under or in front of the seat.
When the seat is folded, it will lay flat on the floor.
When folding the seat,
first remove the head
restraints. Push the release
buttons at the bottom of
each head restraint
height-adjust post and slide
the head restraint out of the
height-adjust tubes.
Set the head restraints aside for now. You will store
them in their proper position after you are done folding
the seat.
To fold the seat, pull up on
the strap loop at the rear of
the outer edge of the seat
cushion. Then, pull the
seat cushion up and fold
it forward.
After folding the seat cushion fully forward, pull the
seatback forward and fold the seatback down until it
is flat.
Then, store the head
restraints by sliding them
into the rear of the seat
cushion. Make sure the
posts go in all the way.

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On Suburban models, to
create a load floor, release
the panels from the seatback
by pushing rearward on the
latch and fold them out to
cover the rear seat footwell.
To return the seat to the passenger position on a
Suburban, lift the load floor panels and latch them into
the seatback. On both models, remove the head
restraints by sliding them out of the seat cushion. Lift
the seatback up and push rearward all the way. Then,
lower the seat cushion until it latches in position.
After returning the seat to the passenger position, return
the head restraints to the top of the seatback. Pull
forward on the seatback and up on the seat cushion to
make sure that the seat is securely in place.
If the latch plate portion of the center safety belt was put
in the center armrest when the seat was folded, take the
latch plate portion out and place it on the seat. That way,
the center position safety belt will be available for the
center rear seat passenger to use.
Entry to the Rear Seat (Suburban Second Seat)
The right side of the rear 60/40 split folding bench seat
has an easy entry feature. That makes it easy to get in
and out of the third seat, if you have one.
To operate the seat, move the lever at the side of the
seat down.
Tilt the seatback toward the front of the vehicle by
pulling the top of the seatback forward.
When you do, the seat bottom will release. Just pull the
seat forward until it stops.

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There is a foot-operated
release lever for rear seat
passengers to use when
getting out of the third seat.
To release the easy entry second seat, lift up on the
top of the release lever with your foot. Push the top
of the seatback forward and tilt it toward the front of
the vehicle.
To return the seat to its regular position, return the
seatback to its upright position, then push the whole seat
rearward until it latches.
After returning the seat to its regular position, try to
move the seat with your body, to make sure the seat is
locked into place.
Removing the Rear (Suburban Third Seat)
If your vehicle has a third seat, it can be taken out for
more cargo space.
Before removing the seat, unlatch the outside passenger
position safety belts from the seat frame.
To unlatch the safety belt,
press the tip of a key into
the release hole of the
safety belt attachment
while pulling up on the
safety belt.

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Then, hang the latch plate
end of the belt on the hook
at the top of the retractor
cover, out of the way.
To remove the seat, fully open the rear load doors and
enter the back of the vehicle.
Move the seatback release
lever, at the right rear of the
seat, toward the center of
the vehicle.
Then, fold the seatback forward into the seat cushion.
To unlatch the seat from the
floor, pull up on the center
release handle at the rear of
the seat and lift the rear seat
up, off of the floor.
Turn the seat sideways and take it out of the vehicle.
Replacing the Rear Seat
CAUTION:
A seat that isn’t locked into place properly can
move around in a collision or sudden stop. People
in the vehicle could be injured. Be sure to lock
the seat into place properly when installing it.

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CAUTION:
A safety belt that is twisted or not properly
attached won’t provide the protection needed in a
crash. The person wearing the belt could be
seriously injured. After installing the seat, always
check to be sure that the safety belts are not
twisted and are properly attached.
To put the seat back in, hold the seat sideways and put it
into the vehicle. Turn the seat to the forward position
and set it down, with the latches at the bottom of the seat
over the hooks in the floor. Pull up on the center release
handle and let the seat drop into place. Release the
handle to let the seat latch close and make sure it locks
into place. Then, move the seatback release lever at the
right rear of the seat toward the center of the vehicle and
raise the seatback.
After returning the seatback to the upright position, push
the seatback forward to make sure it is locked into place.
Then, return the outside passenger position safety belts
to the seat frame buckles, so they will be available for
rear seat passengers to use.
Safety Belts: They’re for Everyone
This part of the manual tells you how to use safety belts
properly. It also tells you some things you should not do
with safety belts.
And it explains the air bag system.
CAUTION:
Don’t let anyone ride where he or she can’t wear
a safety belt properly. If you are in a crash and
you’re not wearing a safety belt, your injuries
can be much worse. You can hit things inside the
vehicle or be ejected from it. You can be seriously
injured or killed. In the same crash, you might
not be if you are buckled up. Always fasten your
safety belt, and check that your passengers’ belts
are fastened properly too.