1998 GMC SIERRA Owners Manual

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.
A CAUTION: 1
These mean there is something that could hurt
you or other people.
I
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:
I 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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Vehicle Symbols
These are some of the symbols you may find on your vehicle.
For example.
these symbols are used
on an
originnl battery:
POSSIBLE A
CAUTION
INJURY
PROTECT EYES BY
SHIELDING
CAUSTIC
ACID COULD
BATTERY
CAUSE
BURNS
AVOID
SPARKS
OR
FLAMES
SPARK
OR ,\I/,
COULD FLAME
EXPLODE BATTERY
These symbols are important
for you
and
your passengers whenever your
vehicle is
driven:
DOOR LOCK
UNLOCK
FASTEN SEAT
BELTS
POWER
WINDOW
These symbols
have to do with
your lamps:
SIGNALS e e
TURN
RUNNING
*'***'O
DAYTIME LAMPS
*
FOG LAMPS # 0
These symbols
are on some of
your controls:
WIPER Q
WINDSHIELD
DEFROSTER
WINDOW
DEFOGGER
VENTILATING FAN
These symbols
are used on
warning and
indicator lights:
ENGINE k
COOLANT - td
TEMP -
CHARGING BATTERY
SYSTEM
BRAKE
(@)
rr
ENGINE OIL w,
PRESSURE
ANTI-LOCK
(@)
BRAKES
Here are some
other symbols
you may see:
FUSE -%-
t
LIGHTER
HORN
)tr
SPEAKER
b
FUEL no
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Model Reference
.s manual covers these models:
Regular Cab Pickup
Extended Cab Pickup
Crew Cab
Chassis Cab
Ill 3500 HD Chassis Cab
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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 1-9
1-13
1- 14
1- 14
1-22
1-23
1-23
1-32 Seats
and Seat Controls
Safety Belts: They’re for Everyone
Here Are Questions Many People
Ask About
Safety Belts
-- and the Answers
How to Wear Safety Belts Properly
Driver Position
Safety Belt Use During Pregnancy
Right Front Passenger Position
Air Bag System
Center Passenger Position 1-34
1-40
1-42
1-45
1-67
1-70
1-70
1-70 Rear
Seat Passengers
Rear Safety Belt Comfort Gu’ides for
Children and Small Adults
Children
Child Restraints
Larger Children Safety Belt Extender
Checking Your Restraint Systems
Replacing Restraint System Parts After
a Crash
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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
I /! CAUTIO-.:
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 in order to make sure
the seat
is locked into place.
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Power Driver’s Seat (Option)
If your vehicle has a power seat on the driver’s side, you can
adjust
it with these controls at the outside edge of the seat.
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 Control (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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To adjust the front 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. But
don’t have a seatback reclined if your vehicle
is moving.
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