2004 CADILLAC DEVILLE coolant temperature

If No Steam Is Coming From Your
Engine
An overheat warning, along with a low coolant message,
can indicate a serious problem. SeeDIC Warnings
and Messages on page 3-65.
If you get an engine overheat warning with no low
coolant message, but see or hear no steam, the problem
may not be too serious. Sometimes the engine can
get a little too hot when you:
Climb a long hill on a hot day.
Stop after high-speed driving.
Idle for long periods in traffic.
Tow a trailer.If you get the overheat warning with no sign of steam,
try this for a minute or so:
1. In heavy traffic, let the engine idle in NEUTRAL (N)
while stopped. If it safe to do so, pull of the road,
shift to PARK (P) or NEUTRAL (N) and let the
engine idle.
2. Set the temperature control to the highest heat
setting and open the windows, as necessary.
If you no longer have the overheat warning, you can
drive. Just to be safe, drive slower for about 10 minutes.
If the warning does not come back on, you can drive
normally.
If the warning continues, pull over, stop, and park your
vehicle right away.
If there is still no sign of steam, idle the engine for three
minutes while you are parked. If you still have the
warning,turn off the engine and get everyone out of the
vehicleuntil it cools down. Also, see “Overheated
Engine Protection Operating Mode” listed previously in
this section.
You may decide not to lift the hood but to get service
help right away.
5-33

(h)If you do not use your vehicle under the following
conditions, the uid and lter do not require chage until
the CHANGE TRANS FLUID message appears on
the Driver Information Center. Change automatic
transaxle uid and lter if the vehicle is mainly driven
under one or more of these conditions:
In heavy city traffic where the outside temperature
regularly reaches 90°F (32°C) or higher.
In hilly or mountainous terrain.
When doing frequent trailer towing.
Uses such as limousine service.
Uses such as high performance operation.
(i)Drain, ush and rell cooling system. See Engine
Coolant on page 5-27for what to use. Inspect hoses.
Clean radiator, condenser, pressure cap and ller neck.
Pressure test the cooling system and pressure cap.
(j)Check throttle system for interference or binding and
for damaged or missing parts. Replace parts as
needed. Replace any components that have high effort
or excessive wear. Do not lubricate accelerator or
cruise control cables.
(k)A uid loss in any vehicle system could indicate a
problem. Have the system inspected and repaired
and the uid level checked. Add uid if needed.
(l)Inspect throttle body bore and valve plates for
deposits. Open the throttle valve and inspect all
surfaces. Clean as required.Owner Checks and Services
These owner checks and services should be performed
at the intervals specied to help ensure the safety,
dependability and emission control performance of your
vehicle. Your GM Goodwrench dealer can assist you
with these checks and services.
Be sure any necessary repairs are completed at once.
Whenever any uids or lubricants are added to your
vehicle, make sure they are the proper ones, as shown
inRecommended Fluids and Lubricants on page 6-13.
At Each Fuel Fill
It is important to perform these underhood checks at
each fuel ll.
Engine Oil Level Check
Check the engine oil level and add the proper oil if
necessary. SeeEngine Oil on page 5-15for further
details.
Notice:It is important to check your oil regularly
and keep it at the proper level. Failure to keep your
engine oil at the proper level can cause damage
to your engine not covered by your warranty.
6-9

Climate Control System
Air Filter, Passenger Compartment.................3-40
Climate Controls Personalization....................3-43
Dual..........................................................3-32
Outlet Adjustment........................................3-37
Rear..........................................................3-38
Steering Wheel Controls...............................3-42
Comfort Controls, DIC Personalization................3-73
Compact Spare Tire........................................5-96
Compass Calibration.......................................2-40
Compass Operation.........................................2-40
Compass Variance..........................................2-40
Console Shift Lever.........................................2-35
Continuous Variable Road Sensing Suspension
(CVRSS)....................................................4-11
Control of a Vehicle.......................................... 4-6
Convenience Net............................................2-53
Coolant
Engine Temperature Gage............................3-54
Engine Temperature Warning Light.................3-54
Heater, Engine............................................2-27
Surge Tank Pressure Cap.............................5-31
Cooled Seats................................................... 1-3
Cooling System..............................................5-34
Cornering Lamps............................................3-20
Courtesy Lamps.............................................3-23Cruise Control................................................3-13
Cruise Control Light........................................3-60
Current and Past Model Order Forms................7-13
Customer Assistance Information
Courtesy Transportation.................................. 7-8
Customer Assistance for Text Telephone (TTY)
Users....................................................... 7-4
Customer Assistance Offices........................... 7-4
Customer Satisfaction Procedure..................... 7-2
GM Mobility Program for Persons with
Disabilities................................................ 7-6
Reporting Safety Defects to General Motors.......7-12
Reporting Safety Defects to the Canadian
Government............................................7-11
Reporting Safety Defects to the United States
Government............................................7-11
Roadside Service.......................................... 7-6
Service Publications Ordering Information........7-12
D
Daytime Running Lamps..................................3-18
Defensive Driving............................................. 4-2
Defogging and Defrosting.................................3-36
Digital Cluster.................................................3-45
Dinghy Towing................................................4-34
4

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

Following Distance..........................................4-46
Front Ashtray.................................................3-31
Front Storage Area.........................................2-51
Fuel............................................................... 5-5
Additives...................................................... 5-6
California Fuel.............................................. 5-6
Data Display...............................................3-61
Filling a Portable Fuel Container....................5-12
Filling Your Tank........................................... 5-8
Fuels in Foreign Countries.............................. 5-7
Gage.........................................................3-60
Gasoline Octane........................................... 5-5
Gasoline Specications.................................. 5-5
Full Floor Console Storage Area.......................2-51
Fuses
Fuses and Circuit Breakers.........................5-108
Windshield Wiper.......................................5-107
G
Gage
Engine Coolant Temperature.........................3-54
Fuel..........................................................3-60
Speedometer..............................................3-47
Tachometer.................................................3-49
Garage Door Opener.......................................2-46
Garment Hooks..............................................2-53Gasoline
Octane........................................................ 5-5
Specications............................................... 5-5
Gate Operator and Canadian Programming........2-49
Glove Box.....................................................2-50
Glovebox-Mounted CD Changer......................3-110
GM Mobility Program for Persons with
Disabilities.................................................... 7-6
H
Hazard Warning Flashers................................... 3-6
Headlamp
Aiming.......................................................5-55
Horizontal Aiming.........................................5-56
Vertical Aiming............................................5-57
Headlamp High/Low-Beam Changer...................3-10
Headlamp Wiring...........................................5-107
Headlamps....................................................5-59
Bulb Replacement.......................................5-59
Front Turn Signal, Sidemarker, Parking and
Cornering Lamps......................................5-63
Halogen Bulbs............................................5-59
Heated Seats................................................... 1-3
Heated Steering Wheel..................................... 3-8
Highway Hypnosis...........................................4-25
Hill and Mountain Roads..................................4-26
7

L
Lamps
Exterior......................................................3-17
Interior.......................................................3-22
Lamps on Reminder........................................3-18
Lap Belt........................................................1-21
Lap-Shoulder Belt...................................1-13, 1-22
LATCH System
Child Restraints...........................................1-42
Securing a Child Restraint Designed for the
LATCH System........................................1-44
Leaving Your Vehicle.......................................2-11
Leaving Your Vehicle With the Engine Running......2-35
Light
Air Bag Readiness.......................................3-50
Anti-Lock Brake System Warning...................3-52
Brake System Warning and Parking Brake
Indicator.................................................3-51
Charging System.........................................3-51
Cruise Control.............................................3-60
Engine Coolant Temperature Warning.............3-54
Fog Lamp..................................................3-59
Lights On Reminder.....................................3-60
Malfunction Indicator....................................3-55Light (cont.)
Oil Pressure...............................................3-58
Safety Belt Reminder...................................3-49
Security.....................................................3-59
TCS Warning Light......................................3-53
Traction Control System (TCS) Warning..........3-53
Lighted Rear Vanity Mirror................................2-18
Lighted Visor Vanity Mirror...............................2-18
Lights Flash at Lock........................................3-80
Lights Flash at Unlock.....................................3-79
Loading Your Vehicle.......................................4-35
Lockout Protection..........................................2-11
Locks
Central Door Unlocking System....................... 2-9
Door........................................................... 2-8
Leaving Your Vehicle....................................2-11
Lockout Protection.......................................2-11
Power Door.................................................. 2-9
Programmable Automatic Door Locks.............2-10
Rear Door Security Locks.............................2-10
Loss of Control...............................................4-16
Lumbar
Massaging Controls....................................... 1-3
Power Controls............................................. 1-2
Lumbar Controls, Rear Power............................ 1-6
9