2009 CADILLAC DTS airbag

The vehicle has an airbag system. Before attempting to
add anything electrical to the vehicle, seeServicing
Your Airbag-Equipped Vehicle on page 1-68.
Headlamp Wiring
The headlamp wiring system has four individual fuses. An
electrical overload will cause the lamps to go on and off,
or in some cases to remain off. If this happens, have the
headlamp wiring checked right away.
Windshield Wiper Fuses
The windshield wiper motor is protected by an internal
circuit breaker. If the wiper motor overheats due to
heavy snow, the wipers will stop until the motor cools
and will then restart.
A fuse powers the wiper motor. If the fuse blows, there
is an electrical problem. Be sure to have it xed.
Power Windows and Other Power
Options
Circuit breakers in the fuse block protect the power
windows and other power accessories. When the
current load is too heavy, the circuit breaker opens and
closes, protecting the circuit until the problem is xed or
goes away.
Fuses and Circuit Breakers
The wiring circuits in the vehicle are protected from
short circuits by a combination of fuses and circuit
breakers. This greatly reduces the chance of res
caused by electrical problems.
Look at the silver-colored band inside the fuse. If the
band is broken or melted, replace the fuse. Be sure you
replace a bad fuse with a new one of the identical size
and rating.
If you ever have a problem on the road and don’t have
a spare fuse, you can borrow one that has the same
amperage. Just pick some feature of the vehicle that you
can get along without — like the radio or cigarette
lighter — and use its fuse, if it is the correct amperage.
Replace it as soon as you can.
Underhood Fuse Block
The underhood fuse block is located on the passenger
side of the engine compartment. Remove the fuse cover
and secondary service cover to access the fuse block.
Notice:Spilling liquid on any electrical components
on the vehicle may damage it. Always keep the
covers on any electrical component.
5-95

Fuses Usage
6 Oxygen Sensor
7 Emission Device
8 Transmission, Ignition 1
9Engine Control Module (ECM),
Powertrain Control Module (PCM)
10Climate Control System, Instrument
Panel Cluster Ignition 1
11 Airbag System
12 Horn
13 Windshield Wiper
14 Fog Lamps
15 Right High-Beam Headlamp
16 Left High-Beam Headlamp
17 Left Low-Beam Headlamp
18 Right Low-Beam Headlamp
19 Windshield Washer Pump Motor
20 Left Front Cornering Lamp
21 Right Front Cornering Lamp
22 Air Pump (J-Case)Fuses Usage
23Antilock Brake System (ABS)
(J-Case)
24 Starter (J-Case)
25Antilock Brake System (ABS) Motor
(J-Case)
26 Cooling Fan 2 (J-Case)
27 Cooling Fan 1 (J-Case)
28 Windshield Washer Heater (J-Case)
Relays Usage
29 Powertrain
30 Starter
31 Cooling Fan 2
32 Cooling Fan 3
33 Cooling Fan 1
34 Air Conditioning Clutch
35 Air Injection Reactor (AIR) Solenoid
36 Ignition
37 Air Pump
5-97

Current and Past Model Order Forms
Technical Service Bulletins and Manuals are available
for current and past model GM vehicles. To request
an order form, specify year and model name of
the vehicle.
ORDER TOLL FREE: 1-800-551-4123
Monday-Friday 8:00 AM - 6:00 PM
Eastern Time
For Credit Card Orders Only
(VISA-MasterCard-Discover), visit Helm, Inc.
on the World Wide Web at: helminc.com
Or you can write to:
Helm, Incorporated
P.O. Box 07130
Detroit, MI 48207
Prices are subject to change without notice and without
incurring obligation. Allow ample time for delivery.
Note to Canadian Customers: All listed prices are
quoted in U.S. funds. Canadian residents are to make
checks payable in U.S. funds.
Vehicle Data Recording and
Privacy
Your GM vehicle has a number of sophisticated
computers that record information about the vehicle’s
performance and how it is driven. For example, your
vehicle uses computer modules to monitor and control
engine and transmission performance, to monitor the
conditions for airbag deployment and deploy airbags
in a crash and, if so equipped, to provide antilock braking
to help the driver control the vehicle. These modules
may store data to help your dealer/retailer technician
service your vehicle. Some modules may also store data
about how you operate the vehicle, such as rate of fuel
consumption or average speed. These modules may also
retain the owner’s personal preferences, such as radio
pre-sets, seat positions, and temperature settings.
7-17

Event Data Recorders
This vehicle has an Event Data Recorder (EDR).
The main purpose of an EDR is to record, in certain
crash or near crash-like situations, such as an airbag
deployment or hitting a road obstacle, data that will assist
in understanding how a vehicle’s systems performed.
The EDR is designed to record data related to vehicle
dynamics and safety systems for a short period of time,
typically 30 seconds or less. The EDR in this vehicle is
designed to record such data as:
How various systems in your vehicle were operating
Whether or not the driver and passenger safety belts
were buckled/fastened
How far, if at all, the driver was pressing the
accelerator and/or brake pedal
How fast the vehicle was traveling
This data can help provide a better understanding of the
circumstances in which crashes and injuries occur.Important:EDR data is recorded by your vehicle
only if a non-trivial crash situation occurs; no data is
recorded by the EDR under normal driving conditions and
no personal data (e.g., name, gender, age, and crash
location) is recorded. However, other parties, such as law
enforcement, could combine the EDR data with the type
of personally identifying data routinely acquired during a
crash investigation.
To read data recorded by an EDR, special equipment
is required, and access to the vehicle or the EDR
is needed. In addition to the vehicle manufacturer,
other parties, such as law enforcement, that have the
special equipment, can read the information if they have
access to the vehicle or the EDR.
GM will not access this data or share it with others
except: with the consent of the vehicle owner or, if the
vehicle is leased, with the consent of the lessee; in
response to an official request of police or similar
government office; as part of GM’s defense of litigation
through the discovery process; or, as required by law.
Data that GM collects or receives may also be used for
GM research needs or may be made available to others
for research purposes, where a need is shown and the
data is not tied to a specic vehicle or vehicle owner.
7-18

A
Accessories and Modications............................ 5-3
Accessory Power............................................2-26
Accessory Power Outlets.................................3-38
Adaptive Cruise Control...................................3-19
Adding Equipment to Your
Airbag-Equipped Vehicle...............................1-69
Additional Required Services,
Scheduled Maintenance................................. 6-5
Additives, Fuel................................................. 5-6
Add-On Electrical Equipment............................5-94
Air Cleaner/Filter, Engine.................................5-17
Air Filter, Passenger Compartment....................3-48
Airbag
Readiness Light..........................................3-54
Airbag System................................................1-55
Adding Equipment to Your
Airbag-Equipped Vehicle............................1-69
How Does an Airbag Restrain?......................1-62
Passenger Sensing System...........................1-64
Servicing Your Airbag-Equipped Vehicle..........1-68
What Makes an Airbag Inate?......................1-61
What Will You See After an Airbag Inates?....1-62
When Should an Airbag Inate?....................1-60
Where Are the Airbags?...............................1-57
Airbags
Passenger Status Indicator...........................3-55Analog Clock..................................................3-39
Antenna
Backglass.................................................3-129
Antenna, XM™ Satellite Radio
Antenna System.........................................3-129
Antilock Brake System (ABS)............................. 4-4
Warning Light.............................................3-57
Appearance Care
Aluminum or Chrome-Plated Wheels..............5-92
Care of Safety Belts....................................5-89
Chemical Paint Spotting...............................5-93
Cleaning Exterior Lamps/Lenses....................5-90
Fabric/Carpet..............................................5-87
Finish Care.................................................5-90
Finish Damage
............................................5-93
Instrument Panel, Vinyl, and Other
Plastic Surfaces.......................................5-88
Interior Cleaning..........................................5-86
Leather......................................................5-88
Sheet Metal Damage...................................5-93
Speaker Covers..........................................5-89
Tires..........................................................5-93
Underbody Maintenance...............................5-93
Washing Your Vehicle...................................5-90
Weatherstrips..............................................5-89
Windshield and Wiper Blades........................5-91
Wood Panels..............................................5-89
Ashtray(s)......................................................3-39
1

K
Keyless Entry, Remote Operation........................ 2-5
Keyless Entry System....................................... 2-4
Keys............................................................... 2-3
L
Labeling, Tire Sidewall.....................................5-49
Lamp
Malfunction Indicator....................................3-61
Lamps
Cornering...................................................3-34
Courtesy....................................................3-35
Daytime Running (DRL)................................3-33
Exterior Lighting Battery Saver......................3-34
Footwell.....................................................3-36
Reading.....................................................3-35
Lane Departure Warning..................................2-49
Lane Departure Warning Light..........................3-59
Lap Belt ........................................................1-31
Lap-Shoulder Belt...........................................1-26
LATCH System for Child Restraints...................1-43
Lighting
Entry.........................................................3-35
Parade Dimming..........................................3-35Lights
Airbag Readiness........................................3-54
Antilock Brake System (ABS) Warning............3-57
Brake System Warning.................................3-56
Charging System.........................................3-56
Cruise Control.............................................3-66
Engine Coolant Temperature Warning.............3-59
Exterior Lamps............................................3-29
Flash-to-Pass..............................................3-13
Fog Lamp ..................................................3-65
Highbeam On.............................................3-66
High/Low Beam Changer................................ 3-9
Lane Departure Warning...............................3-59
Lights On Reminder.....................................3-65
Oil Pressure...............................................3-64
On Reminder..............................................3-33
Passenger Airbag Status Indicator..................3-55
Safety Belt Reminders..................................3-53
Security.....................................................3-65
StabiliTrak
®Indicator....................................3-58
Tire Pressure..............................................3-60
Traction Control System (TCS) Warning..........3-58
Loading Your Vehicle.......................................4-19
Lockout Switch, Valet......................................2-20
8

N
Navigation System, Privacy..............................7-19
Navigation/Radio System,
see Navigation Manual...............................3-116
Net
Convenience...............................................2-63
New Vehicle Break-In......................................2-24
O
Object Detection, Side Blind Zone Alert (SBZA) . . . 2-45
Odometer......................................................3-52
Off-Road
Recovery....................................................4-10
Oil
Engine.......................................................5-13
Engine Oil Life System.................................5-16
Pressure Light.............................................3-64
Older Children, Restraints................................1-33
Online Owner Center........................................ 7-5
OnStar, Privacy..............................................7-19
OnStar
®System, see OnStar®Manual...............2-51
Operation, Universal Home Remote System........2-55
Outlet Adjustment............................................3-46
Outlets
Accessory Power.........................................3-38Outside
Automatic Dimming Mirror.............................2-40
Convex Mirror.............................................2-41
Heated Mirrors............................................2-41
Power Foldaway Mirrors...............................2-40
Overheated Engine Protection Operating Mode....5-30
Owner Checks and Services.............................. 6-8
Owners, Canadian............................................... ii
P
Paint, Damage...............................................5-93
Parade Dimming.............................................3-35
Park
Shifting Into................................................2-33
Shifting Out of............................................2-34
Park Aid........................................................2-42
Park Tilt Mirrors..............................................2-41
Parking
Assist........................................................2-42
Over Things That Burn.................................2-35
Parking Brake................................................2-32
Passenger Airbag Status Indicator.....................3-55
Passenger Compartment Air Filter.....................3-48
Passenger Sensing System..............................1-64
Passing.........................................................4-10
PASS-Key
®III+ Electronic Immobilizer...............2-22
10

Seats
Center Seat................................................1-10
Head Restraints............................................ 1-2
Heated and Cooled Seats.............................. 1-5
Heated Seats - Rear....................................1-10
Massaging Lumbar........................................ 1-4
Memory, Mirrors............................................ 1-6
Power Lumbar .............................................. 1-4
Power Lumbar, Rear ....................................1-11
Power Reclining Seatbacks............................. 1-8
Power Seats................................................. 1-3
Securing a Child Restraint
Center Front Seat Position............................1-51
Rear Seat Position......................................1-49
Right Front Seat Position..............................1-52
Security Light.................................................3-65
Service........................................................... 5-3
Accessories and Modications......................... 5-3
Adding Equipment to the Outside of the
Vehicle..................................................... 5-5
Doing Your Own Work................................... 5-4
Engine Soon Lamp......................................3-61
Publications Ordering Information...................7-16
Scheduling Appointments..............................7-10
Service Parts Identication Label.......................5-94
Servicing Your Airbag-Equipped Vehicle..............1-68Setting the Clock............................................3-96
Sheet Metal Damage.......................................5-93
Shifting
Out of Park................................................2-34
Shifting Into Park............................................2-33
Side Blind Zone Alert......................................2-45
Signals, Turn and Lane-Change.......................... 3-8
Spare Tire.....................................................5-85
Installing....................................................5-77
Removing...................................................5-76
Storing.......................................................5-83
Specications and Capacities..........................5-103
Speedometer..................................................3-52
StabiliTrak
®Indicator Light...............................3-58
StabiliTrak®System.......................................... 4-6
Start Vehicle, Remote....................................... 2-7
Starting the Engine.........................................2-26
Steering.......................................................... 4-8
Steering Wheel
Heated........................................................ 3-7
Steering Wheel Controls, Audio.......................3-127
Steering Wheel Controls, Memory....................... 1-6
Steering Wheel, Power Tilt Wheel and
Telescopic Steering Column............................ 3-7
Steering Wheel, Tilt Wheel................................. 3-6
13