2003 GMC SIERRA child restraint

Seats and Restraint Systems........................... 1-1
Front Seats
............................................... 1-2
Rear Seats
............................................... 1-6
Safety Belts
.............................................. 1-7
Child Restraints
.......................................1-29
Air Bag Systems
......................................1-55
Restraint System Check
............................1-71
Features and Controls..................................... 2-1
Keys
........................................................ 2-2
Doors and Locks
....................................... 2-6
Windows
.................................................2-11
Theft-Deterrent Systems
............................2-13
Starting and Operating Your Vehicle
...........2-15
Mirrors
....................................................2-28
OnStar
®System
......................................2-33
HomeLink®Transmitter
.............................2-35
Storage Areas
.........................................2-39
Vehicle Personalization
.............................2-41
Instrument Panel............................................. 3-1
Instrument Panel Overview
.......................... 3-2
Climate Controls
......................................3-18
Warning Lights, Gages and Indicators
.........3-24
Driver Information Center (DIC)
..................3-42
Audio System(s)
.......................................3-56Driving Your Vehicle....................................... 4-1
Your Driving, the Road, and Your Vehicle
..... 4-2
Towing
...................................................4-46
Service and Appearance Care.......................... 5-1
Service
..................................................... 5-3
Fuel
......................................................... 5-4
Checking Things Under
the Hood
.............................................5-10
All-Wheel Drive
........................................5-45
Rear Axle
...............................................5-46
Front Axle
...............................................5-47
Bulb Replacement
....................................5-48
Windshield Wiper Blade Replacement
.........5-56
Tires
......................................................5-56
Appearance Care
.....................................5-82
Vehicle Identication
.................................5-90
Electrical System
......................................5-91
Capacities and Specications
.....................5-99
Normal Maintenance Replacement Parts
....5-100
Maintenance Schedule..................................... 6-1
Maintenance Schedule
................................ 6-2
Customer Assistance Information.................... 7-1
Customer Assistance Information
.................. 7-2
Reporting Safety Defects
............................ 7-8
Index................................................................ 1
2003 GMC Sierra Denali Owner ManualM
2003 - Sierra Denali Owner Manual

Front Seats......................................................1-2
Power Seats..................................................1-2
Power Lumbar ...............................................1-3
Heated Seats.................................................1-3
Reclining Seatbacks........................................1-4
Head Restraints.............................................1-5
Rear Seats.......................................................1-6
Rear Seat Operation.......................................1-6
Safety Belts.....................................................1-7
Safety Belts: They Are for Everyone.................1-7
Questions and Answers About Safety Belts......1-11
How to Wear Safety Belts Properly.................1-12
Driver Position..............................................1-12
Safety Belt Use During Pregnancy..................1-20
Right Front Passenger Position.......................1-21
Center Passenger Position.............................1-21
Rear Seat Passengers..................................1-23
Rear Safety Belt Comfort Guides for
Children and Small Adults..........................1-26
Safety Belt Extender.....................................1-28
Child Restraints.............................................1-29
Older Children..............................................1-29
Infants and Young Children............................1-31
Child Restraint Systems.................................1-35
Where to Put the Restraint.............................1-38
Top Strap....................................................1-39Top Strap Anchor Location.............................1-40
Lower Anchorages and Top Tethers for
Children (LATCH System)...........................1-42
Securing a Child Restraint Designed for the
LATCH System.........................................1-45
Securing a Child Restraint in a Rear Outside
Seat Position............................................1-45
Securing a Child Restraint in a Center Rear
Seat Position............................................1-47
Securing a Child Restraint in the Right Front
Seat Position............................................1-49
Air Bag Systems............................................1-55
Where Are the Air Bags?...............................1-57
When Should an Air Bag Inflate?....................1-58
What Makes an Air Bag Inflate?.....................1-59
How Does an Air Bag Restrain?.....................1-59
What Will You See After an Air Bag Inflates?.......1-59
Air Bag Off Switch........................................1-61
Passenger Sensing System............................1-66
Servicing Your Air Bag-Equipped Vehicle.........1-70
Adding Equipment to Your Air Bag-Equipped
Vehicle....................................................1-71
Restraint System Check..................................1-71
Checking Your Restraint Systems
...................1-71
Replacing Restraint System Parts
After a Crash
............................................1-72
Section 1 Seats and Restraint Systems
1-1
2003 - Sierra Denali

Q:If I’m a good driver, and I never drive far from
home, why should I wear safety belts?
A:You may be an excellent driver, but if you’re in an
accident–even one that isn’t your fault–you and
your passengers can be hurt. Being a good
driver doesn’t protect you from things beyond your
control, such as bad drivers.
Most accidents occur within 25 miles (40 km) of
home. And the greatest number of serious injuries
and deaths occur at speeds of less than 40 mph
(65 km/h).
Safety belts are for everyone.
How to Wear Safety Belts Properly
This part is only for people of adult size.
Be aware that there are special things to know about
safety belts and children. And there are different
rules for smaller children and babies. If a child will be
riding in your vehicle, seeOlder Children on page 1-29
orInfants and Young Children on page 1-31. Follow
those rules for everyone’s protection.
First, you’ll want to know which restraint systems your
vehicle has.
We’ll start with the driver position.
Driver Position
This part describes the driver’s restraint system.
Lap-Shoulder Belt
The driver has a lap-shoulder belt. Here’s how to wear it
properly.
1. Close and lock the door.
2. Adjust the seat so you can sit up straight. To see
how, see“Seats”in the Index.
1-12
2003 - Sierra Denali

The best way to protect the fetus is to protect the
mother. When a safety belt is worn properly, it’s more
likely that the fetus won’t be hurt in a crash. For
pregnant women, as for anyone, the key to making
safety belts effective is wearing them properly.
Right Front Passenger Position
To learn how to wear the right front passenger’s safety
belt properly, seeDriver Position on page 1-12.
The right front passenger’s safety belt works the same
way as the driver’s safety belt—except for one thing.
If you ever pull the shoulder portion of the belt out all the
way, you will engage the child restraint locking feature
which may turn off the passenger’s frontal air bag. If this
happens unintentionally, just let the belt go back all
the way and start again.
Center Passenger Position
1-21
2003 - Sierra Denali

Child Restraints
Older Children
Older children who have outgrown booster seats should
wear the vehicle’s safety belts.
If you have the choice, a child should sit in a seat that
has a lap-shoulder belt to get the additional restraint
a shoulder belt can provide.
Q:What is the proper way to wear safety belts?
A:If possible, an older child should wear a
lap-shoulder belt and get the additional restraint a
shoulder belt can provide. The shoulder belt
should not cross the face or neck. The lap belt
shouldfit snugly below the hips, just touching the
top of the thighs. It should never be worn over
the abdomen, which could cause severe or even
fatal internal injuries in a crash.
Accident statistics show that children are safer if they
are restrained in the rear seat.
In a crash, children who are not buckled up can strike
other people who are buckled up, or can be thrown
out of the vehicle. Older children need to use safety
belts properly.
1-29
2003 - Sierra Denali

{CAUTION:
Never do this.
Here two children are wearing the same belt.
The belt can’t properly spread the impact
forces. In a crash, the two children can be
crushed together and seriously injured. A belt
must be used by only one person at a time.
Q:What if a child is wearing a lap-shoulder belt,
but the child is so small that the shoulder belt
is very close to the child’s face or neck?
A:Move the child toward the center of the vehicle,
but be sure that the shoulder belt still is on the
child’s shoulder, so that in a crash the child’s upper
body would have the restraint the belts provide.
If the child is sitting in a rear seat outside position,
seeRear Safety Belt Comfort Guides for Children
and Small Adults on page 1-26.
If the child is so small that the shoulder belt is still
very close to the child’s face or neck, you might
want to place the child in a seat that has a lap belt,
if your vehicle has one.
1-30
2003 - Sierra Denali

{CAUTION:
Never do this.
Here a child is sitting in a seat that has a
lap-shoulder belt, but the shoulder part is
behind the child. If the child wears the belt in
this way, in a crash the child might slide under
the belt. The belt’s force would then be applied
right on the child’s abdomen. That could cause
serious or fatal injuries.
Wherever the child sits, the lap portion of the belt
should be worn low and snug on the hips, just touching
the child’s thighs. This applies belt force to the child’s
pelvic bones in a crash.
Infants and Young Children
Everyone in a vehicle needs protection! This includes
infants and all other children. Neither the distance
traveled nor the age and size of the traveler changes
the need, for everyone, to use safety restraints. In fact,
the law in every state in the United States and in
every Canadian province says children up to some age
must be restrained while in a vehicle.
1-31
2003 - Sierra Denali

Every time infants and young children ride in vehicles,
they should have the protection provided by appropriate
restraints. Young children should not use the vehicle’s
adult safety belts alone, unless there is no other choice.
Instead, they need to use a child restraint.
{CAUTION:
People should never hold a baby in their arms
while riding in a vehicle. A baby doesn’t weigh
much -- until a crash. During a crash a baby
will become so heavy it is not possible to hold
it. For example, in a crash at only 25 mph
(40 km/h), a 12-lb. (5.5 kg) baby will suddenly
become a 240-lb. (110 kg) force on a person’s
arms. A baby should be secured in an
appropriate restraint.
1-32
2003 - Sierra Denali