2004 GMC SONOMA belt

Seats and Restraint Systems........................... 1-1
Front Seats
............................................... 1-2
Rear Seats
............................................... 1-7
Safety Belts
.............................................. 1-8
Child Restraints
.......................................1-27
Air Bag System
.......................................1-46
Restraint System Check
............................1-53
Features and Controls..................................... 2-1
Keys
........................................................ 2-2
Doors and Locks
....................................... 2-7
Windows
.................................................2-12
Theft-Deterrent Systems
............................2-14
Starting and Operating Your Vehicle
...........2-16
Mirrors
....................................................2-31
Storage Areas
.........................................2-33
Sunroof
..................................................2-42
Instrument Panel............................................. 3-1
Instrument Panel Overview
.......................... 3-2
Climate Controls
......................................3-18
Warning Lights, Gages and Indicators
.........3-21
Audio System(s)
.......................................3-35Driving Your Vehicle....................................... 4-1
Your Driving, the Road, and Your Vehicle
..... 4-2
Towing
...................................................4-45
Service and Appearance Care.......................... 5-1
Service
..................................................... 5-3
Fuel
......................................................... 5-4
Checking Things Under the Hood
...............5-10
Rear Axle
...............................................5-46
Four-Wheel Drive
.....................................5-46
Front Axle
...............................................5-47
Bulb Replacement
....................................5-48
Windshield Wiper Blade Replacement
.........5-54
Tires
......................................................5-57
Appearance Care
.....................................5-86
Vehicle Identification
.................................5-94
Electrical System
......................................5-94
Capacities and Specifications
...................5-101
Maintenance Schedule..................................... 6-1
Maintenance Schedule
................................ 6-2
Customer Assistance and Information.............. 7-1
Customer Assistance and Information
........... 7-2
Reporting Safety Defects
...........................7-10
Index................................................................ 1
2004 GMC Sonoma Owner ManualM

Front Seats......................................................1-2
Manual Seats................................................1-2
Power Seats..................................................1-3
Power Lumbar...............................................1-4
Heated Seats.................................................1-4
Reclining Seatbacks........................................1-5
Head Restraints.............................................1-6
Rear Seats.......................................................1-7
Rear Seat Operation.......................................1-7
Safety Belts.....................................................1-8
Safety Belts: They Are for Everyone.................1-8
Questions and Answers About Safety Belts......1-12
How to Wear Safety Belts Properly.................1-13
Driver Position..............................................1-14
Safety Belt Use During Pregnancy..................1-20
Right Front Passenger Position.......................1-21
Center Passenger Position.............................1-21
Rear Seat Passengers..................................1-23
Safety Belt Extender.....................................1-26
Child Restraints.............................................1-27
Older Children..............................................1-27
Infants and Young Children............................1-29
Child Restraint Systems.................................1-33
Where to Put the Restraint (Crew Cab)............1-36
Top Strap....................................................1-37Top Strap Anchor Location.............................1-38
Lower Anchorages and Top Tethers
for Children (LATCH System)......................1-39
Securing a Child Restraint Designed for
the LATCH System (Rear)..........................1-41
Securing a Child Restraint in a Rear
Outside Seat Position................................1-41
Securing a Child Restraint in a Center
Seat Position............................................1-43
Securing a Child Restraint in the
Right Front Seat Position............................1-44
Air Bag System..............................................1-46
Where Are the Air Bags?...............................1-48
When Should an Air Bag Inflate?....................1-49
What Makes an Air Bag Inflate?.....................1-50
How Does an Air Bag Restrain?.....................1-50
What Will You See After an
Air Bag Inflates?.......................................1-50
Servicing Your Air Bag-Equipped Vehicle.........1-52
Adding Equipment to Your Air
Bag-Equipped Vehicle................................1-53
Restraint System Check..................................1-53
Checking Your Restraint Systems...................1-53
Replacing Restraint System Parts
After a Crash............................................1-54
Section 1 Seats and Restraint Systems
1-1

Power Lumbar
If your vehicle has this
feature, there will be a
control located on
the outboard side of the
front seat(s).
Press and hold the front of the control until you have
the desired lumbar support. To decrease lumbar
support, press and hold the rear of the control.
Heated Seats
If your vehicle has this
feature, the controls are
located on the outboard
side of the front seats.
This feature will heat the lower cushion and lower back
of the driver’s and front passenger’s seats.
Press the lower part of the switch to turn the heater on
low. Press the upper part of the switch to turn the
heater on high. Put the switch in the center position to
turn the heater off.
The passenger’s safety belt must be engaged for the
heated seat feature to work on the passenger’s seat.
1-4

{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.
Head Restraints
Head restraints are fixed on some models and
adjustable on others. Slide an adjustable head restraint
up or down so that the top of the restraint is closest
to the top of your head. This position reduces the
chance of a neck injury in a crash.
1-6

Rear Seats
Rear Seat Operation
The rear seatback can be
tilted forward to let you
reach the area behind it.
To tilt the seatback forward, lift up on the lever located
at the base of the seatback on the driver’s or
passenger’s side and then push the seatback forward.
To return the seatback to the upright position, push
the seatback rearward until it latches. After returning the
seatback to its upright position, try to pull the seatback
forward to make sure it is locked.
{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.
{CAUTION:
A safety belt that is improperly routed, not
properly attached, or twisted won’t provide the
protection needed in a crash. The person
wearing the belt could be seriously injured.
After raising the rear seatback, always check
to be sure that the safety belts are properly
routed and attached, and are not twisted.
1-7

Safety Belts
Safety Belts: They Are 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.
{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.
{CAUTION:
It is extremely dangerous to ride in a cargo
area, inside or outside of a vehicle. In a
collision, people riding in these areas are more
likely to be seriously injured or killed. Do not
allow people to ride in any area of your vehicle
that is not equipped with seats and safety
belts. Be sure everyone in your vehicle is in a
seat and using a safety belt properly.
1-8

Your vehicle has a light
that comes on as a
reminder to buckle up. See
Safety Belt Reminder
Light on page 3-24.
In most states and in all Canadian provinces, the law
says to wear safety belts. Here’s why:They work.
You never know if you’ll be in a crash. If you do have a
crash, you don’t know if it will be a bad one.
A few crashes are mild, and some crashes can be so
serious that even buckled up, a person wouldn’t survive.
But most crashes are in between. In many of them,
people who buckle up can survive and sometimes walk
away. Without belts they could have been badly hurt
or killed.
After more than 30 years of safety belts in vehicles, the
facts are clear. In most crashes buckling up does
matter... a lot!Why Safety Belts Work
When you ride in or on anything, you go as fast as
it goes.
Take the simplest vehicle. Suppose it’s just a seat
on wheels.
1-9

or the safety belts!
With safety belts, you slow down as the vehicle does.
You get more time to stop. You stop over more distance,
and your strongest bones take the forces. That’s why
safety belts make such good sense.
Questions and Answers About
Safety Belts
Q:Won’t I be trapped in the vehicle after an
accident if I’m wearing a safety belt?
A:Youcouldbe – whether you’re wearing a safety
belt or not. But you can unbuckle a safety belt,
even if you’re upside down. And your chance
of being conscious during and after an accident,
so youcanunbuckle and get out, ismuchgreater if
you are belted.
Q:If my vehicle has air bags, why should I have to
wear safety belts?
A:Air bags are in many vehicles today and will be in
most of them in the future. But they are
supplemental systems only; so they workwith
safety belts – not instead of them. Every air bag
system ever offered for sale has required the
use of safety belts. Even if you’re in a vehicle that
has air bags, you still have to buckle up to get
the most protection. That’s true not only in frontal
collisions, but especially in side and other
collisions.
1-12