2005 CADILLAC DEVILLE ECU

Anti-Lock Brake System Warning Light.............3-48
Traction Control System (TCS) Warning Light......3-48
Engine Coolant Temperature Warning Light......3-49
Engine Coolant Temperature Gage..................3-49
Malfunction Indicator Lamp.............................3-50
Oil Pressure Light.........................................3-53
Security Light...............................................3-53
Fog Lamp Light............................................3-54
Lights On Reminder......................................3-54
Cruise Control Light......................................3-54
Highbeam On Light.......................................3-54
Fuel Gage...................................................3-55
Fuel Data Display (Digital Cluster Only)...........3-56
Driver Information Center (DIC).......................3-57
DIC Controls and Displays.............................3-57
DIC Warnings and Messages.........................3-60
Climate Controls and Radio System
Personalization..........................................3-68
DIC Vehicle Personalization............................3-68
Trip Computer................................................3-79
Oil Life Indicator...........................................3-79Audio System(s).............................................3-80
Setting the Time for Radios without Radio
Data Systems (RDS)..................................3-80
Setting the Time for Radios with Radio Data
Systems (RDS).........................................3-81
Radio with CD..............................................3-81
Radio with Cassette and CD..........................3-88
Navigation/Radio System...............................3-99
Glovebox-Mounted CD Changer....................3-100
Radio Personalization with Home and Away
Feature..................................................3-103
Theft-Deterrent Feature................................3-103
Audio Steering Wheel Controls......................3-104
Radio Reception.........................................3-104
Care of the Cassette Tape Player.................3-105
Care of Your CDs.......................................3-106
Care of the CD Player.................................3-107
Diversity Antenna System.............................3-107
XM™ Satellite Radio Antenna System............3-107
Section 3 Instrument Panel
3-2

This can happen if you have recently replaced your
battery or if your battery has run down. The diagnostic
system is designed to evaluate critical emission
control systems during normal driving. This may take
several days of routine driving. If you have done this and
your vehicle still does not pass the inspection for lack
of OBD system readiness, your GM dealer can prepare
the vehicle for inspection.
Oil Pressure Light
{CAUTION:
Do not keep driving if the oil pressure is low.
If you do, your engine can become so hot that
it catches re. You or others could be burned.
Check your oil as soon as possible and have
your vehicle serviced.
Notice:Lack of proper engine oil maintenance may
damage the engine. The repairs would not be
covered by your warranty. Always follow the
maintenance schedule in this manual for changing
engine oil.This light tells you if there
could be a problem with
your engine oil pressure.
The light goes on when you turn your key to ON or
START. It goes off once you start your engine. That is a
check to be sure the light works. If it does not come
on, be sure to have it xed so it will be there to warn you
if something goes wrong.
When the light comes on and stays on, it means that oil
is not owing through your engine properly. You could
be low on oil and you might have some other system
problem.
Security Light
For information
regarding this light,
seeTheft-Deterrent
Systems on page 2-19.
3-53

XM™ Radio Messages (cont’d)
Radio Display
Message Condition Action Required
No CAT Info Category Name not
availableNo category information is available at this time on this
channel. The system is working properly.
Not Found No channel available for
the chosen categoryThere are no channels available for the selected category.
The system is working properly.
No Information No Text/Informational
message availableNo text or informational messages are available at this time
on this channel. The system is working properly.
XM Theftlocked Theft lock active The XM receiver in the vehicle may have previously been in
another vehicle. For security purposes, XM receivers cannot
be swapped between vehicles. If this message is received
after having the vehicle serviced, check with your dealer.
XM Radio ID Radio ID label
(channel 0)If tuned to channel 0, this message will alternate with the
XM Radio 8 digit radio ID label. This label is needed to
activate the service.
Unknown Radio ID not known
(should only be if
hardware failure)If this message is received when tuned to channel 0, there
may be a receiver fault. Consult with your dealer.
Check XM Receiver Hardware failure If this message does not clear within a short period of time,
the receiver may have a fault. Consult with your dealer.
3-85

XM™ Radio Messages (cont’d)
Radio Display
MessageCondition Action Required
No CAT Info Category Name not
availableNo category information is available at this time on this
channel. The system is working properly.
Not Found No channel available for
the chosen categoryThere are no channels available for the selected category.
The system is working properly.
No Information No Text/Informational
message availableNo text or informational messages are available at this time
on this channel. The system is working properly.
XM Theftlocked Theft lock active The XM receiver in the vehicle may have previously been in
another vehicle. For security purposes, XM receivers cannot
be swapped between vehicles. If this message is received
after having your vehicle serviced, check with your GM
dealer.
XM Radio ID Radio ID label
(channel 0)If tuned to channel 0, this message will alternate with the
XM Radio 8 digit radio ID label. This label is needed to
activate the service.
Unknown Radio ID not known
(should only be if
hardware failure)If this message is received when tuned to channel 0, there
may be a receiver fault. Consult with your GM dealer.
Check XM Receiver Hardware failure If this message does not clear within a short period of time,
the receiver may have a fault. Consult with your GM dealer.
3-95

Winter Driving
Here are some tips for winter driving:
Have your vehicle in good shape for winter.
You may want to put winter emergency supplies in
your trunk.
Also seeTires on page 5-57.Include an ice scraper, a small brush or broom, a
supply of windshield washer uid, a rag, some winter
outer clothing, a small shovel, a ashlight, a red
cloth, and a couple of reective warning triangles. And,
if you will be driving under severe conditions, include
a small bag of sand, a piece of old carpet, or a couple of
burlap bags to help provide traction. Be sure you
properly secure these items in your vehicle.
4-25

If you put things inside your vehicle, like suitcases,
tools, packages, or anything else, they will go as fast as
the vehicle goes. If you have to stop or turn quickly,
or if there is a crash, they will keep going.
{CAUTION:
Things you put inside your vehicle can strike
and injure people in a sudden stop or turn, or
in a crash.
Put things in the trunk of your vehicle. In a
trunk, put them as far forward as you can.
Try to spread the weight evenly.
Never stack heavier things, like suitcases,
inside the vehicle so that some of them
are above the tops of the seats.
Do not leave an unsecured child restraint
in your vehicle.
When you carry something inside the
vehicle, secure it whenever you can.
Automatic Level Control
This feature keeps the rear of your vehicle level as the
load changes. It is automatic, you do not need to
adjust anything.
Towing
Towing Your Vehicle
Consult your dealer or a professional towing service if
you need to have your disabled vehicle towed. See
Roadside Service on page 7-5.
If you want to tow your vehicle behind another vehicle
for recreational purposes (such as behind a motorhome),
see Recreational Vehicle Towing following.
Recreational Vehicle Towing
Recreational vehicle towing means towing your vehicle
behind another vehicle – such as behind a motorhome.
The two most common types of recreational vehicle
towing are known as “dinghy towing” (towing your
vehicle with all four wheels on the ground) and “dolly
towing” (towing your vehicle with two wheels on
the ground and two wheels up on a device known as
a “dolly”).
With the proper preparation and equipment, many
vehicles can be towed in these ways. See “Dinghy
Towing” and “Dolly Towing,” following.
4-35

Driving with a Trailer
Towing a trailer requires a certain amount of experience.
Before setting out for the open road, you will want to
get to know your rig. Acquaint yourself with the feel of
handling and braking with the added weight of the trailer.
And always keep in mind that the vehicle you are
driving is now a good deal longer and not nearly as
responsive as your vehicle is by itself.
Before you start, check the trailer hitch and platform,
parts and attachments, safety chains, electrical
connector, lamps, tires and mirror adjustment. If the
trailer has electric brakes, start your vehicle and trailer
moving and then apply the trailer brake controller
by hand to be sure the brakes are working. This lets
you check your electrical connection at the same time.
During your trip, check occasionally to be sure that
the load is secure, and that the lamps and any trailer
brakes are still working.
Following Distance
Stay at least twice as far behind the vehicle ahead as
you would when driving your vehicle without a trailer.
This can help you avoid situations that require
heavy braking and sudden turns.
Passing
You will need more passing distance up ahead when
you are towing a trailer. And, because the vehicle
is a good deal longer, you will need to go much farther
beyond the passed vehicle before you can return to
your lane.
Backing Up
Hold the bottom of the steering wheel with one hand.
Then, to move the trailer to the left, just move that hand
to the left. To move the trailer to the right, move your
hand to the right. Always back up slowly and, if possible,
have someone guide you.
Making Turns
Notice:Making very sharp turns while trailering
could cause the trailer to come in contact with the
vehicle. Your vehicle could be damaged. Avoid
making very sharp turns while trailering.
When you are turning with a trailer, make wider turns
than normal. Do this so your trailer will not strike
soft shoulders, curbs, road signs, trees or other objects.
Avoid jerky or sudden maneuvers. Signal well in
advance.
4-41

Adding Coolant
If you need more coolant, add the proper DEX-COOL®
coolant mixture at the coolant surge tank, but only
when the engine is cool.
{CAUTION:
You can be burned if you spill coolant on hot
engine parts. Coolant contains ethylene glycol,
and it will burn if the engine parts are hot
enough. Do not spill coolant on a hot engine.
When replacing the pressure cap, make sure the arrow
lines up with the tube.
Coolant Surge Tank Pressure Cap
Notice:If the pressure cap is not tightly installed,
coolant loss and possible engine damage may occur.
Be sure the cap is properly and tightly secured.
The coolant surge tank pressure cap must be fully
installed on the coolant surge tank. SeeEngine
Compartment Overview on page 5-12for more
information on location.
Engine Overheating
You will nd an ENGINE COOLANT HOT, IDLE
ENGINE message or an ENGINE OVERHEATED,
STOP ENGINE message displayed in the Driver
Information Center (DIC). SeeDIC Warnings and
Messages on page 3-60for more information. You will
also hear a chime.
There is also an engine temperature warning light
and/or gage on the instrument panel cluster. SeeEngine
Coolant Temperature Warning Light on page 3-49and
Engine Coolant Temperature Gage on page 3-49.
5-27