check engine CADILLAC DEVILLE 2004 8.G Workshop Manual

Engine Coolant Level Check
Check the engine coolant level and add
DEX-COOL®coolant mixture if necessary. SeeEngine
Coolant on page 5-27for further details.
Windshield Washer Fluid Level Check
Check the windshield washer uid level in the windshield
washer tank and add the proper uid if necessary.
At Least Once a Month
Tire Ination Check
Visually inspect your tires and make sure tires are
inated to the correct pressures. Do not forget to check
your spare tire. SeeTires on page 5-66for further
details.
Cassette Tape Player Service
Clean cassette tape player. Cleaning should be done
every 50 hours of tape play. SeeAudio System(s)
on page 3-89for further details.
At Least Once a Year
Starter Switch Check
{CAUTION:
When you are doing this inspection, the
vehicle could move suddenly. If the vehicle
moves, you or others could be injured.
1. Before you start, be sure you have enough room
around the vehicle.
2. Firmly apply both the parking brake and the regular
brake. SeeParking Brake on page 2-32if necessary.
Do not use the accelerator pedal, and be ready to
turn off the engine immediately if it starts.
3. Try to start the engine in each gear. The starter
should work only in PARK (P) or NEUTRAL (N).
If the starter works in any other position, contact
your GM Goodwrench dealer for service.
6-10

Automatic Transaxle Shift Lock Control
System Check
{CAUTION:
When you are doing this inspection, the
vehicle could move suddenly. If the vehicle
moves, you or others could be injured.
1. Before you start, be sure you have enough room
around the vehicle. It should be parked on a level
surface.
2. Firmly apply the parking brake. SeeParking Brake
on page 2-32if necessary.
Be ready to apply the regular brake immediately if
the vehicle begins to move.3. With the engine off, turn the key to the ON position,
but do not start the engine. Without applying the
regular brake, try to move the shift lever out
of PARK (P) with normal effort. If the shift lever
moves out of PARK (P), contact your GM
Goodwrench dealer for service.Ignition Transaxle Lock Check
While parked, and with the parking brake set, try to turn
the ignition key to OFF in each shift lever position.
The key should turn to OFF only when the shift lever
is in PARK (P).
The key should come out only in OFF.
Contact your GM Goodwrench dealer if service is
required.
6-11

Parking Brake and Automatic Transaxle
Park (P) Mechanism Check
{CAUTION:
When you are doing this check, your vehicle
could begin to move. You or others could be
injured and property could be damaged. Make
sure there is room in front of your vehicle in
case it begins to roll. Be ready to apply the
regular brake at once should the vehicle begin
to move.Park on a fairly steep hill, with the vehicle facing
downhill. Keeping your foot on the regular brake, set the
parking brake.
To check the parking brake’s holding ability: With
the engine running and transaxle in NEUTRAL (N),
slowly remove foot pressure from the regular
brake pedal. Do this until the vehicle is held by the
parking brake only.
To check the PARK (P) mechanism’s holding ability:
With the engine running, shift to PARK (P). Then
release the parking brake followed by the regular
brake.
Contact your GM Goodwrench dealer if service is
required.
Underbody Flushing Service
At least every spring, use plain water to ush any
corrosive materials from the underbody. Take care to
clean thoroughly any areas where mud and other debris
can collect.
6-12

Vehicle Data Collection and Event
Data Recorders
Your vehicle, like other modern motor vehicles, has a
number of sophisticated computer systems that monitor
and control several aspects of the vehicle’s performance.
Your vehicle uses on-board vehicle computers to monitor
emission control components to optimize fuel economy,
to monitor conditions for air bag deployment and, if so
equipped, to provide anti-lock braking and to help the
driver control the vehicle in difficult driving situations.
Some information may be stored during regular
operations to facilitate repair of detected malfunctions;
other information is stored only in a crash or near crash
event by computer systems commonly called event data
recorders (EDR).
In a crash or near crash event, computer systems, such
as the Air Bag Sensing and Diagnostic Module (SDM) in
your vehicle may record information about the condition
of the vehicle and how it was operated, such as engine
speed, brake applications, throttle position, vehicle
speed, safety belt usage, air bag readiness, air bag
performance data, and the severity of a collision. This
information has been used to improve vehicle crash
performance and may be used to improve crash
performance of future vehicles and driving safety. Unlike
the data recorders on many airplanes, these on-board
systems do not record sounds, such as conversation of
vehicle occupants.To read this information, special equipment is needed
and access to the vehicle or the SDM is required.
GM will not access information about a crash event or
share it with others other thanwith 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.
In addition, once GM collects or receives data, GM may
use the data for GM research needs,
make it available for research where appropriate
condentiality is to be maintained and need is
shown, or
share summary data which is not tied to a specic
vehicle with non-GM organizations for research
purposes.
Others, such as law enforcement, may have access to
the special equipment that can read the information
if they have access to the vehicle or SDM.
If your vehicle is equipped with OnStar
®, please check
the OnStar®subscription service agreement or manual
for information on its operations and data collection.
7-10

Cassette Tape Messages...............................3-107
Cassette Tape Player Service...........................6-10
CD Changer, Glovebox-Mounted......................3-110
CD Messages.............................3-97, 3-109, 3-113
Cellular Phone Usage....................................3-116
Cellular Telephone, Storage Area......................2-51
Center Console Storage Area...........................2-51
Center Flex Storage Unit.................................2-52
Center Front Passenger Position, Safety Belts.......1-20
Center High-Mounted Stoplamp (CHMSL)...........5-64
Chains, Tires..................................................5-84
Charging System Light....................................3-51
Check
Engine Light...............................................3-55
Checking Coolant............................................5-29
Checking Engine Oil........................................5-16
Checking Things Under the Hood......................5-12
Chemical Paint Spotting.................................5-104
Child Restraints
Child Restraint Systems...............................1-35
Infants and Young Children...........................1-31
Lower Anchorages and Top Tethers for
Children (LATCH System)..........................1-42
Older Children.............................................1-29
Securing a Child Restraint Designed for the
LATCH System........................................1-44Child Restraints (cont.)
Securing a Child Restraint in a Rear Seat
Position..................................................1-44
Securing a Child Restraint in the Right Front
Seat Position...........................................1-47
Top Strap...................................................1-40
Top Strap Anchor Location............................1-41
Where to Put the Restraint...........................1-38
Cigarette Lighter.....................................3-31, 3-32
Cleaning
Inside of Your Vehicle..................................5-98
Outside of Your Vehicle..............................5-101
Underbody Maintenance.............................5-104
Weatherstrips............................................5-101
Cleaning Aluminum or Chrome-Plated Wheels.....5-103
Cleaning Exterior Lamps/Lenses......................5-102
Cleaning Fabric/Carpet....................................5-98
Cleaning Glass Surfaces................................5-100
Cleaning Leather............................................5-99
Cleaning the Interior Plastic Components..........5-100
Cleaning the Mirror.................................2-39, 2-41
Cleaning the Speaker Covers..........................5-100
Cleaning the Top of the Instrument Panel.........5-100
Cleaning Tires..............................................5-103
Cleaning Vinyl................................................5-99
Cleaning Windshield and Wiper Blades............5-102
Cleaning Wood Panels...................................5-100
3

Engine
Air Cleaner/Filter.........................................5-22
Battery.......................................................5-46
Check and Service Engine Soon Light............3-55
Coolant......................................................5-27
Coolant Heater............................................2-27
Coolant Temperature Gage...........................3-54
Coolant Temperature Warning Light................3-54
Drive Belt Routing.......................................6-15
Engine Compartment Overview......................5-14
Exhaust.....................................................2-37
Oil .............................................................5-15
Overheating................................................5-31
Starting......................................................2-26
Engine Cooling When Trailer Towing..................4-48
Engine Oil Additives........................................5-20
Engine Speed Limiter......................................3-49
English/Metric Button.......................................3-48
Entering Feature Programming..........................3-74
Entry Lighting.................................................3-23
Erasing HomeLink
®Buttons..............................2-49
Event Data Recorders (EDR)............................7-10
Exiting Feature Programming............................3-88
Express-Down Window....................................2-16
Express-Up Window........................................2-16Extender, Safety Belt.......................................1-28
Exterior Lamps...............................................3-17
Exterior Lighting Battery Saver..........................3-22
Exterior Lights at Unlock..................................3-82
F
Filter
Engine Air Cleaner......................................5-22
Finding a Program Type (PTY) Station
(XM™ Only)......................................3-93, 3-101
Finding a Station....................................3-91, 3-99
Finish Care..................................................5-102
Finish Damage.............................................5-104
Flash-To-Pass................................................3-10
Flat Tire........................................................5-85
Flat Tire, Changing.........................................5-86
Floor Mats.....................................................2-53
Fluid
Automatic Transaxle.....................................5-24
Power Steering...........................................5-40
Windshield Washer......................................5-41
FM Stereo....................................................3-115
Fog Lamp Light..............................................3-59
Fog Lamps....................................................3-20
6

Hitches..........................................................4-45
HomeLink®Transmitter....................................2-46
HomeLink®Transmitter, Programming................2-47
Hood
Checking Things Under................................5-12
Release.....................................................5-13
Horn............................................................... 3-7
Horn Sounds at Lock......................................3-81
How the System Works...................................3-29
How to Add Coolant to the Coolant
Surge Tank.................................................5-36
How to Add Fluid............................................5-26
How to Check Power Steering Fluid..................5-41
How to Reset the Transaxle Fluid Indicator.........5-27
How to Use This Manual...................................... ii
How to Wear Safety Belts Properly...................1-12
Hydroplaning..................................................4-21
I
If No Steam Is Coming From Your Engine..........5-33
If Steam Is Coming From Your Engine...............5-32
If the Light Is Flashing.....................................3-56
If the Light Is On Steady.................................3-57If You Are Caught in a Blizzard.........................4-30
If You Are Stuck in Sand, Mud, Ice or Snow.......4-32
If You Do Decide To Pull a Trailer.....................4-42
Ignition Positions.............................................2-24
Inadvertent Power Battery Saver.......................3-25
Infants and Young Children, Restraints...............1-31
Ination - Tire Pressure...................................5-74
Instrument Panel
Cluster.......................................................3-44
Overview..................................................... 3-4
Storage Area..............................................2-50
Instrument Panel Brightness.............................3-22
Interior Lamps................................................3-22
J
Jump Starting.................................................5-48
K
Key in Recall Memory.....................................3-76
Keyless Entry System....................................... 2-5
Keys............................................................... 2-3
8

O
Odometer......................................................3-47
Odometer, Trip...............................................3-47
Off-Road Recovery..........................................4-14
Oil
Engine.......................................................5-15
Life Indicator...............................................3-89
Pressure Light.............................................3-58
Older Children, Restraints................................1-29
Online Owner Center........................................ 7-4
OnStar
®Personal Calling.................................2-44
OnStar®Services............................................2-44
OnStar®Steering Wheel Controls......................2-45
OnStar®System.............................................2-43
OnStar®Virtual Advisor....................................2-44
Other Warning Devices...................................... 3-7
Outlet Adjustment............................................3-37
Outside
Automatic Dimming Mirror.............................2-42
Convex Mirror.............................................2-43
Curb View Assist Mirror................................2-42
Heated Mirrors............................................2-43
Power Mirrors.............................................2-41
Overheated Engine Protection Operating Mode.....5-31
Overseas – Customer Assistance........................ 7-5
Owner Checks and Services.............................. 6-9
Owners, Canadian............................................... ii
Owner’s Information........................................7-13
P
Parade Dimming.............................................3-23
Park Aid........................................................3-28
Park (P)
Shifting Into................................................2-33
Shifting Out of............................................2-36
Parking
Assist........................................................3-28
Brake........................................................2-32
Brake Indicator Light....................................3-51
Over Things That Burn.................................2-37
Parking on Hills..............................................4-47
Passenger Compartment Air Filter.....................3-40
Passing.................................................4-14, 4-46
PASS-Key
®III ................................................2-21
PASS-Key®III Operation..................................2-22
Performance Shifting (DTS Only).......................2-32
Personalization, Climate Controls......................3-43
Plan Ahead When Possible................................ 7-8
Playing a Cassette Tape................................3-106
Playing a CD........................................3-96, 3-108
Playing the Radio...................................3-91, 3-99
Power
Accessory Outlets........................................3-30
Door Locks.................................................. 2-9
Electrical System.......................................5-107
Lumbar Controls........................................... 1-2
11

Rear Window Defogger....................................3-37
Rearview Mirror, Automatic Dimming with
OnStar
®.....................................................2-39
Rearview Mirror, Automatic Dimming with
OnStar
®and Compass.................................2-39
Reclining Seatbacks.......................................... 1-4
Recommended Fluids and Lubricants.................6-13
Recreational Vehicle Towing.............................4-33
Remote Keyless Entry System............................ 2-5
Remote Keyless Entry System, Operation............ 2-6
Remote Recall Memory...................................3-75
Removing the Flat Tire and Installing the
Spare Tire..................................................5-89
Removing the Spare Tire and Tools...................5-87
Removing the Wheel Covers............................5-88
Replacement Bulbs.........................................5-64
Replacing Brake System Parts..........................5-46
Reporting Safety Defects
Canadian Government..................................7-11
General Motors...........................................7-12
United States Government............................7-11
Reprogramming a Single HomeLink
®Button.......2-50
Resetting Defaults...........................................2-50
Restraint System Check
Checking Your Restraint Systems...................1-60
Replacing Restraint System Parts After
a Crash..................................................1-61Restraint Systems
Checking....................................................1-60
Replacing Parts...........................................1-61
Retained Accessory Power (RAP)......................2-25
Right Front Passenger Position, Safety Belts......1-20
Roadside
Service........................................................ 7-6
Roadside Service Availability.............................. 7-7
Roadside Service for the Hearing or Speech
Impaired...................................................... 7-7
Rocking Your Vehicle To Get It Out...................4-33
Routing, Engine Drive Belt...............................6-15
Running Your Engine While You Are Parked.......2-38
S
Safety Belt
Pretensioners..............................................1-28
Reminder Light............................................3-49
Safety Belts
Care of....................................................5-101
Center Front Passenger Position....................1-20
Driver Position............................................1-13
How to Wear Safety Belts Properly................1-12
Questions and Answers About Safety Belts.....1-11
Rear Safety Belt Comfort Guides for Children
and Small Adults......................................1-25
13

Safety Belts (cont.)
Rear Seat Passengers.................................1-22
Right Front Passenger Position......................1-20
Safety Belt Extender....................................1-28
Safety Belt Use During Pregnancy.................1-19
Safety Belts Are for Everyone......................... 1-7
Safety Chains.................................................4-45
Safety Warnings and Symbols.............................. iii
Scheduled Maintenance..................................... 6-4
Seats
Heated and Cooled Seats.............................. 1-3
Heated Seats, Rear....................................... 1-5
Massaging Lumbar........................................ 1-3
Memory.....................................................2-55
Power Lumbar.............................................. 1-2
Power Lumbar, Rear...................................... 1-6
Power Seats................................................. 1-2
Reclining Seatbacks...................................... 1-4
Securing a Child Restraint
Designed for the LATCH System...................1-44
Rear Seat Position......................................1-44
Right Front Seat Position..............................1-47
Security Light.................................................3-59
Sensors.........................................................3-36
Service........................................................... 5-3
Adding Equipment to the Outside of Your
Vehicle..................................................... 5-5Service (cont.)
Doing Your Own Work................................... 5-4
Engine Soon Light.......................................3-55
Publications Ordering Information...................7-12
Service Bulletins.............................................7-13
Service Engine Soon Light in the United States
or Check Engine Light in Canada..................3-55
Service Manuals.............................................7-12
Setting Preset Stations...........................3-92, 3-100
Setting the Time
Radios with Radio Data Systems (RDS).........3-90
Radios without Radio Data Systems (RDS).....3-90
Setting the Tone (Bass/Treble)................3-92, 3-100
Sheet Metal Damage.....................................5-103
Shift Lock Release..........................................2-32
Shifting Into Park (P).......................................2-33
Shifting Out of Park (P)...................................2-36
Skidding........................................................4-16
Some Other Rainy Weather Tips.......................4-22
Special Fabric Cleaning Problems.....................5-99
Specications, Capacities...............................5-115
Speedometer..................................................3-47
Starting Your Engine.......................................2-26
Steering........................................................4-11
Steering Column Shift Lever.............................2-34
Steering in Emergencies..................................4-13
Steering Tips..................................................4-12
14