2004 CADILLAC DEVILLE headlamp

Front Turn Signal, Sidemarker,
Parking and Cornering Lamps
1. The turn signal lamps are located beside the
headlamp bulbs. To access, lift off the bulb
socket dust cover. See Steps 1 through 6 under
Headlamps on page 5-59.
2. Press the tab down and turn the housing socket
clockwise to unlock the socket from the lamp
housing.3. Remove the turn signal lamp housing socket and
replace the bulb.
4. Reverse Steps 1 and 2 to reinstall.
5-63

Center High-Mounted Stoplamp
(CHMSL)
It is recommended that this component be replaced as
a unit. See your dealer.
Taillamps, Turn Signal, and
Stoplamps
It is recommended that this component be replaced as
a unit. See your dealer.
Replacement Bulbs
For any bulb not listed here, contact your dealer.
Lamp Bulb Number
Cornering Lamps 3157
Front Turn Signal 3157
Headlamps, Composite
Lower High Beam
Upper Low Beam9005
9006
5-64

If you need to replace any of your wheels, wheel bolts
or wheel nuts, replace them only with new GM
original equipment parts. This way, you will be sure to
have the right wheel, wheel bolts and wheel nuts
for your vehicle.
{CAUTION:
Using the wrong replacement wheels, wheel
bolts or wheel nuts on your vehicle can be
dangerous. It could affect the braking and
handling of your vehicle, make your tires lose
air and make you lose control. You could have
a collision in which you or others could be
injured. Always use the correct wheel, wheel
bolts and wheel nuts for replacement.Notice:The wrong wheel can also cause problems
with bearing life, brake cooling, speedometer or
odometer calibration, headlamp aim, bumper height,
vehicle ground clearance and tire or tire chain
clearance to the body and chassis.
SeeChanging a Flat Tire on page 5-86for more
information.
Used Replacement Wheels
{CAUTION:
Putting a used wheel on your vehicle is
dangerous. You can’t know how it’s been used
or how far it’s been driven. It could fail
suddenly and cause a crash. If you have to
replace a wheel, use a new GM original
equipment wheel.
5-83

Electrical System
Add-On Electrical Equipment
Notice:Don’t add anything electrical to your vehicle
unless you check with your dealer rst. Some
electrical equipment can damage your vehicle and
the damage wouldn’t be covered by your warranty.
Some add-on electrical equipment can keep other
components from working as they should.
Your vehicle has an air bag system. Before attempting
to add anything electrical to your vehicle, see
Servicing Your Air Bag-Equipped Vehicle on page 1-60.
Headlamp Wiring
The headlamp wiring system has four individual fuses,
LF low, RF low, LF high and RF high. 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 protect the power windows and power
seats. When the current load is too heavy, the circuit
breaker opens and closes, protecting the circuit until the
problem is xed or goes away.
5-107

Fuses Usage
1 Assembly Line Diagnostic Work
2 Accessory
3 Windshield Wipers
4 Not Used
5 Headlamp Low Beam Left
6 Headlamp Low Beam Right
7 Instrument Panel
8 Powertrain Control Module Battery
9 Headlamp High Beam Right
10 Headlamp High Beam Left
11 Ignition 1
Fuses Usage
12 Fog Lamps
13 Transmission
14 Cruise Control
15 Coil Module
16 Injector Bank #2
17 Not Used
18 Not Used
19 Powertrain Control Module Ignition
20 Oxygen Sensor
21 Injector Bank #1
22 Cigar Lighter #2
23 Cigar Lighter #1
24 Daytime Running Lamps
25 Horn
26 Air Conditioner Clutch
42 Not Used
43 Not Used
44 Anti-Lock Brake System
45 Air Pump
46 Cooling Fan 1
47 Cooling Fan 2
5-109

Relays Usage
27 Headlamp High Beam
28 Headlamp Low Beam
29 Fog Lamps
30 Daytime Running Lamps
31 Horn
32 Air Conditioner Clutch
33 Not Used
34 Accessory
35 Not Used
36 Starter 1
37 Cooling Fan 1
38 Ignition 1
39 Cooling Fan Series/Parallel
40 Cooling Fan 2
Circuit
BreakersUsage
41 Starter
The spare fuses are located in numbers 48 through 52.
The fuse puller is located in number 53.
Removing the Rear Seat Cushion
Notice:If you touch the exposed wires with
the metal on the seat cushion, you could cause a
short that could damage the battery and or
wires. Avoid contact between the rear seat and the
fuse center whenever you remove or reinstall
the rear seat. Do not remove covers from any of the
covered parts, and do not store anything under
the seats.
To remove the rear seat cushion, do the following:
1. Pull up on the front of the cushion to release the
front hooks.
2. Pull the cushion up and out toward the front of the
vehicle.
5-110

Audio System(s) (cont.)
Setting the Time for Radios without Radio
Data Systems (RDS)................................3-90
Theft-Deterrent Feature...............................3-114
Understanding Radio Reception...................3-115
XM™ Satellite Radio Antenna System...........3-118
Auto Exit Seat................................................3-77
Auto Exit Steering Wheel.................................3-78
Automatic Level Control...................................4-41
Automatic Transaxle
Fluid..........................................................5-24
Operation...................................................2-28
B
Backing Up....................................................4-46
Battery..........................................................5-46
Battery Load Management...............................3-24
Battery Replacement......................................... 2-7
Before Leaving on a Long Trip.........................4-24
Brake
Parking......................................................2-32
System Warning and Parking Brake Indicator
Light......................................................3-51
Brake Adjustment............................................5-46
Brake Fluid....................................................5-43
Brake Pedal Travel.........................................5-46Brake Wear...................................................5-45
Brakes..........................................................5-43
Braking........................................................... 4-6
Braking in Emergencies..................................... 4-9
Break-In, New Vehicle.....................................2-24
Bulb Replacement...........................................5-59
Center High-Mounted Stoplamp (CHMSL)........5-64
Front Turn Signal, Sidemarker, Parking and
Cornering Lamps......................................5-63
Halogen Bulbs............................................5-59
Headlamp Aiming........................................5-55
Headlamps.................................................5-59
Replacement Bulbs......................................5-64
Taillamps, Turn Signal, and Stoplamps............5-64
Buying New Tires...........................................5-80
C
Cadillac Owner Privileges™............................... 7-7
California Fuel.................................................. 5-6
Canada – Customer Assistance.......................... 7-5
Canadian Owners................................................ ii
Capacities and Specications..........................5-115
Carbon Monoxide...................4-28, 4-41, 2-12, 2-37
Care of
Safety Belts..............................................5-101
Your Cassette Tape Player..........................3-116
Your CD Player.........................................3-117
Your CDs .................................................3-117
2

Display Mode.................................................3-48
Diversity Antenna System...............................3-118
Doing Your Own Service Work........................... 5-4
Dolly Towing..................................................4-35
Door
Central Door Unlocking System....................... 2-9
Locks.......................................................... 2-8
Power Door Locks......................................... 2-9
Programmable Automatic Door Locks.............2-10
Rear Door Security Locks.............................2-10
Doors Lock in Gear.........................................3-83
Doors Unlock in PARK (P)................................3-86
Doors Unlock Key Off......................................3-86
Driver
Position, Safety Belt.....................................1-13
Driver Information Center (DIC).........................3-62
Climate Controls and Radio System
Personalization........................................3-73
DIC Controls and Displays............................3-62
DIC Vehicle Personalization..........................3-74
DIC Warnings and Messages........................3-65
Driver Unlock in PARK (P)................................3-84
Driver Unlock Key Off......................................3-85
Driver’s Name Set/Recall.................................3-88
Driving
At Night.....................................................4-17
City...........................................................4-22Driving (cont.)
Defensive..................................................... 4-2
Drunken....................................................... 4-2
Freeway.....................................................4-23
Hill and Mountain Roads..............................4-26
In Rain and on Wet Roads...........................4-19
Winter........................................................4-28
Driving on Grades...........................................4-47
Driving on Snow or Ice....................................4-29
Driving Through Deep Standing Water...............4-21
Driving Through Flowing Water.........................4-21
Driving with a Trailer.......................................4-46
Dual Climate Control System............................3-32
E
Electrical System
Add-On Equipment.....................................5-107
Fuses and Circuit Breakers.........................5-108
Headlamp Wiring.......................................5-107
Power Windows and Other Power Options.......5-107
Removing the Rear Seat Cushion................5-110
Windshield Wiper Fuses.............................5-107
Emergency Trunk Release Handle.....................2-14
Emissions Inspection and Maintenance
Programs...................................................3-58
5