2004 CADILLAC DEVILLE fuel

Finish Damage
Any stone chips, fractures or deep scratches in the
nish should be repaired right away. Bare metal
will corrode quickly and may develop into major repair
expense.
Minor chips and scratches can be repaired with touch-up
materials avaliable from your dealer. Larger areas of
nish damage can be corrected in your dealer’s
body and paint shop.
Underbody Maintenance
Chemicals used for ice and snow removal and dust
control can collect on the underbody. If these are not
removed, corrosion and rust can develop on the
underbody parts such as fuel lines, frame, oor pan and
exhaust system even though they have corrosion
protection.
At least every spring, ush these materials from the
underbody with plain water. Clean any areas where mud
and debris can collect. Dirt packed in close areas of
the frame should be loosened before being ushed.
Your dealer or an underbody car washing system can
do this for you.
Chemical Paint Spotting
Some weather and atmospheric conditions can create a
chemical fallout. Airborne pollutants can fall upon and
attack painted surfaces on your vehicle. This damage can
take two forms: blotchy, ring-shaped discolorations, and
small, irregular dark spots etched into the paint surface.
Although no defect in the paint job causes this, GM will
repair, at no charge to the owner, the surfaces of
new vehicles damaged by this fallout condition within
12 months or 12,000 miles (20 000 km) of purchase,
whichever occurs rst.
5-104

Rear Underseat Fuse Block
The rear fuse block is located under the rear seat on
the driver’s side. The rear seat cushion must be
removed to access the rear fuse block. SeeRemoving
the Rear Seat Cushion on page 5-110.
To access the fuse block, push in the two tabs located
at each end of the fuse block cover. Then lift the
cover off.
Fuses Usage
1 Fuel Pump
2Heater, Ventilation and Air
Conditioning Battery
3Memory Seat, Tilt and Telescoping
Steering
4 RR Lumbar, Antenna
5 Driver Door Module
6 Heated Seat Left Rear
7 Power Tilt and Telescoping Steering
5-112

Fuses Usage
8 Supplemental Ination Restraint
9 SDAR (XM™ Satellite Radio)
10 Lamps Park Right
11 Fuel Tank Ventilation Solenoid
12 Ignition 1
13 Interior Lamp Dimmer Module
14 Sunshade
15 Navigation
16 Heated Seat Left Front
17 Interior Lamps
18 Right Rear Door Module
19 Stoplamps
20 Park/Reverse
21 Audio
22Retained Accessory Power for
Sunroof
23 Lamps, Parking Left
24 Night Vision
25 Passenger Door Module
26 BodyFuses Usage
27 Export Lights, Power Locks
28 Rear HVAC Blower
29 Ignition Switch
30 Hazard Signal
31 Reverse, Locks
32Continuous Variable Road Sensing
Suspension
33 Heating, Ventilation, Air Conditioning
34 Ignition 3 Rear
35 Antilock Braking System
36 Heated Seat, Right Front
37 Heated Seat, Right Rear
38 Dimmer
60 Park Brake
61 Rear Defog
62 HVAC Blower
63 Audio Amplier
64 ELC Compressor/Exhaust
65 Cigar Lighter
66 Not Used
5-113

Relays Usage
39 Fuel Pump
40 Parking Lamps
41 Ignition 1
42 Park Brake A
43 Park Brake B
44 Park Shift Interlock
45 Reverse Lamps
46Retained Accessory Power for
Sunroof
47 Reverse Lockout
48 Suspension Dampers
49 Ignition 3
50 Fuel Tank Door Release
51 Interior Lamps
52 Trunk Release
53 Not Used
54 Lock, Cylinder
55 Automatic Level Control Compressor
58 Cigar Lighter
59 Rear DefogCircuit
BreakersUsage
56 Power Seats
57 Power Windows
The spare fuses and fuse puller are located in the
underhood fuse block. See “Underhood Fuse Block”
listed previously underFuses and Circuit Breakers
on page 5-108for more information.
5-114

Capacities and Specications
The following approximate capacities are given in English and metric conversions. Please refer toRecommended
Fluids and Lubricants on page 6-13for more information.
Engine Specications
Engine VIN Code Transaxle Spark Plug Gap Firing Order
4.6 L DOHC V8Y
DeVille,
DHSAutomatic
4T80 – E0.050 inches
(1.3 mm)1-2-7-3-4-5-6-8
4.6 L DOHC V89
DTSAutomatic
4T80 – E0.050 inches
(1.3 mm)1-2-7-3-4-5-6-8
Capacities and Specications
ApplicationCapacities
English Metric
Air Conditioning Refrigerant R134a
Use Refrigerant Oil, R134a Systems2.2 lbs 1.0 kg
Cooling System 13.0 quarts 12.3 L
Engine Oil with Filter 7.5 quarts 7.1 L
Fuel Tank 18.5 gallons 70.0 L
Transaxle 15.0 quarts 14.2 L
Wheel Nut Torque 100 lb-ft 140Y
All capacities are approximate. When adding, be sure to ll to the approximate level as recommended in this
manual. Recheck uid level after lling.
5-115

Maintenance Schedule......................................6-2
Introduction...................................................6-2
Maintenance Requirements..............................6-2
Your Vehicle and the Environment....................6-2
Using Your Maintenance Schedule....................6-3
Scheduled Maintenance...................................6-4
Additional Required Services............................6-6
Maintenance Footnotes...................................6-8Owner Checks and Services............................6-9
At Each Fuel Fill............................................6-9
At Least Once a Month.................................6-10
At Least Once a Year...................................6-10
Recommended Fluids and Lubricants...............6-13
Normal Maintenance Replacement Parts..........6-14
Engine Drive Belt Routing..............................6-15
Maintenance Record.....................................6-16
Section 6 Maintenance Schedule
6-1

Using Your Maintenance Schedule
We at General Motors want to help you keep your
vehicle in good working condition. But we do not know
exactly how you will drive it. You may drive very
short distances only a few times a week. Or you may
drive long distances all the time in very hot, dusty
weather. You may use your vehicle in making deliveries.
Or you may drive it to work, to do errands or in many
other ways.
Because of all the different ways people use their
vehicles, maintenance needs vary. You may need more
frequent checks and replacements. So please read
the following and note how you drive. If you have any
questions on how to keep your vehicle in good condition,
see your GM Goodwrench dealer.
This schedule is for vehicles that:
carry passengers and cargo within recommended
limits. You will nd these limits on the tire and
loading information label. SeeLoading Your Vehicle
on page 4-35.
are driven on reasonable road surfaces within legal
driving limits.
use the recommended fuel. SeeGasoline Octane
on page 5-5.The services inScheduled Maintenance on page 6-4
should be performed when indicated. SeeAdditional
Required Services on page 6-6andMaintenance
Footnotes on page 6-8for further information.
{CAUTION:
Performing maintenance work on a vehicle can
be dangerous. In trying to do some jobs, you
can be seriously injured. Do your own
maintenance work only if you have the
required know-how and the proper tools and
equipment for the job. If you have any doubt,
see your GM Goodwrench dealer to have a
qualied technician do the work.
Some maintenance services can be complex. So,
unless you are technically qualied and have the
necessary equipment, you should have your GM
Goodwrench dealer do these jobs.
When you go to your GM Goodwrench dealer for your
service needs, you will know that GM-trained and
supported service technicians will perform the work
using genuine GM parts.
6-3

Additional Required Services
The following services should be performed at the rst maintenance service (IorII) after the indicated miles
(kilometers) shown for each item.
Additional Required Services
Service and Miles (Kilometers)25,000
(41 500)50,000
(83 000)75,000
(125 000)100,000
(166 000)125,000
(207 500)150,000
(240 000)
Inspect fuel system for damage or
leaks.••••••
Inspect exhaust system for loose or
damaged components.••••••
Replace engine air cleaner lter.
SeeEngine Air Cleaner/Filter on
page 5-22.An Emission Control
Service.••••••
Throttle body service.An Emission
Control Service. See footnotes †
and (l).••••••
Replace seat cushion lter (or every
2 years, whichever occurs rst).••••••
Replace seatback lter (or every
5 years, whichever occurs rst).•••
6-6