
Seats and Restraint Systems........................... 1-1
Front Seats
............................................... 1-2
Rear Seats
............................................... 1-5
Safety Belts
.............................................. 1-7
Child Restraints
.......................................1-29
Air Bag Systems
......................................1-50
Restraint System Check
............................1-60
Features and Controls..................................... 2-1
Keys
........................................................ 2-3
Doors and Locks
....................................... 2-8
Windows
.................................................2-15
Theft-Deterrent Systems
............................2-19
Starting and Operating Your Vehicle
...........2-24
Mirrors
....................................................2-39
OnStar
®System
......................................2-43
HomeLink®Transmitter
.............................2-46
Storage Areas
.........................................2-50
Sunroof
..................................................2-54
Vehicle Personalization
.............................2-55
Instrument Panel............................................. 3-1
Instrument Panel Overview
.......................... 3-4
Climate Controls
......................................3-32
Warning Lights, Gages, and Indicators
........3-44
Driver Information Center (DIC)
..................3-62Trip Computer
.........................................3-89
Audio System(s)
.......................................3-89
Driving Your Vehicle....................................... 4-1
Your Driving, the Road, and Your Vehicle
..... 4-2
Towing
...................................................4-33
Service and Appearance Care.......................... 5-1
Service
..................................................... 5-3
Fuel
......................................................... 5-5
Checking Things Under the Hood
...............5-12
Headlamp Aiming
.....................................5-55
Bulb Replacement
....................................5-59
Windshield Wiper Blade Replacement
.........5-65
Tires
......................................................5-66
Appearance Care
.....................................5-97
Vehicle Identi cation
...............................5-106
Electrical System
....................................5-107
Capacities and Speci cations
...................5-115
Maintenance Schedule..................................... 6-1
Maintenance Schedule
................................ 6-2
Customer Assistance and Information.............. 7-1
Customer Assistance and Information
........... 7-2
Reporting Safety Defects
...........................7-11
Index................................................................ 1
2004 Cadillac DeVille Owner ManualM

Front Seats......................................................1-2
Power Seats..................................................1-2
Power Lumbar...............................................1-2
Massaging Lumbar.........................................1-3
Heated and Cooled Seats................................1-3
Reclining Seatbacks........................................1-4
Rear Seats.......................................................1-5
Heated Seats.................................................1-5
Power Lumbar...............................................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..............................................1-13
Safety Belt Use During Pregnancy..................1-19
Right Front Passenger Position.......................1-20
Center Front Passenger Position.....................1-20
Rear Seat Passengers..................................1-22
Rear Safety Belt Comfort Guides for Children
and Small Adults.......................................1-25
Safety Belt Pretensioners...............................1-28
Safety Belt Extender.....................................1-28
Child Restraints.............................................1-29
Older Children..............................................1-29
Infants and Young Children............................1-31Child Restraint Systems.................................1-35
Where to Put the Restraint.............................1-38
Top Strap....................................................1-40
Top Strap Anchor Location.............................1-41
Lower Anchorages and Top Tethers for
Children (LATCH System)...........................1-42
Securing a Child Restraint Designed for the
LATCH System.........................................1-44
Securing a Child Restraint in a Rear Seat
Position...................................................1-44
Securing a Child Restraint in the Right Front
Seat Position............................................1-47
Air Bag Systems............................................1-50
Where Are the Air Bags?...............................1-53
When Should an Air Bag In ate?....................1-56
What Makes an Air Bag In ate?.....................1-57
How Does an Air Bag Restrain?.....................1-57
What Will You See After an Air Bag In ates?.......1-58
Servicing Your Air Bag-Equipped Vehicle.........1-60
Restraint System Check..................................1-60
Checking Your Restraint Systems...................1-60
Replacing Restraint System Parts After
a Crash...................................................1-61
Section 1 Seats and Restraint Systems
1-1

To unlatch the belt, just push the button on the buckle.
Rear Safety Belt Comfort Guides for
Children and Small Adults
Rear shoulder belt comfort guides will provide added
safety belt comfort for older children who have outgrown
booster seats and for small adults. When installed on
a shoulder belt, the comfort guide better positions
the belt away from the neck and head.
There is one guide for each outside passenger position
in the rear seat. To provide added safety belt comfort
for children who have outgrown child restraints and
booster seats and for smaller adults, the comfort guides
may be installed on the shoulder belts. Here’s how to
install a comfort guide and use the safety belt:
1-25

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 next to a
window so the child can wear a lap-shoulder belt and
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
should t 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

{CAUTION:
Never do this.
Here two children are wearing the same belt.
The belt can not 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:If the child is sitting in a seat next to a window,
move the child toward the center of the vehicle.
If the child is sitting in the center rear seat
passenger position, move the child toward the
safety belt buckle. In either case, 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 that 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 1-25.
1-30

{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.
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

Q:What are the different types of add-on child
restraints?
A:Add-on child restraints, which are purchased by the
vehicle’s owner, are available in four basic types.
Selection of a particular restraint should take
into consideration not only the child’s weight, height
and age but also whether or not the restraint will
be compatible with the motor vehicle in which it will
be used.
For most basic types of child restraints, there are
many different models available. When purchasing a
child restraint, be sure it is designed to be used
in a motor vehicle. If it is, the restraint will have a
label saying that it meets federal motor vehicle
safety standards.
The restraint manufacturer’s instructions that come
with the restraint state the weight and height
limitations for a particular child restraint. In addition,
there are many kinds of restraints available for
children with special needs.
{CAUTION:
Newborn infants need complete support,
including support for the head and neck. This is
necessary because a newborn infant’s neck is
weak and its head weighs so much compared
with the rest of its body. In a crash, an infant in a
rear-facing seat settles into the restraint, so the
crash forces can be distributed across the
strongest part of an infant’s body, the back and
shoulders. Infants always should be secured in
appropriate infant restraints.
1-34

A rear-facing infant seat (B) provides restraint with the
seating surface against the back of the infant. The
harness system holds the infant in place and, in a crash,
acts to keep the infant positioned in the restraint.A forward-facing child seat (C-E) provides restraint for
the child’s body with the harness and also sometimes
with surfaces such as T-shaped or shelf-like shields.
1-36