2003 CADILLAC DEVILLE Owners Manual

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. See
Removing
the Rear Seat Cushion on page 5-96.
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
8 Supplemental In¯ation Restraint
9 SDAR (XMŸ Satellite Radio)
5-98

Fuses Usage
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 Body
27 Export Lights, Power LocksFuses Usage
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 Ampli®er
64 ELC Compressor/Exhaust
65 Cigar Lighter
66 Not Used
5-99

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 ªUnderhood Fuse Blockº
listed previously under
Fuses and Circuit Breakers
on page 5-94for more information.
5-100

Capacities and Speci®cations
The following approximate capacities are given in English and metric conversions. Please refer toPart D:
Recommended Fluids and Lubricants on page 6-15for more information.
Engine Speci®cations
Engine VIN Code TransaxleSpark Plug
GapDisplacement
Firing Order
4.6 L DOHC V8Y
DeVille,
DHS4T80 ± E0.050 inches
(1.3 mm)279 cubic inches
(4 565 cc)1-2-7-3-4-5-6-8
4.6 L DOHC V89
DTS4T80 ± E0.050 inches
(1.3 mm)279 cubic inches
(4 565 cc)1-2-7-3-4-5-6-8
5-101

Capacities and Speci®cations
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.
5-102

Normal Maintenance Replacement Parts
Part Number
Engine Air Cleaner/Filter Element A1208C*
Engine Oil Filter PF58*
Passenger Compartment Air Filter Element **
Spark Plugs41±987*
(GM Part 12571535)
Windshield Wiper Blade
(Shepherd's Hook Type)22 inches (56.5 cm)
*AC Delco
žpart number.
**Use an AC Delcožpart number.
5-103

-NOTES
5-104

Maintenance Schedule......................................6-2
Introduction...................................................6-2
Your Vehicle and the Environment....................6-2
Maintenance Requirements..............................6-2
How This Section is Organized.........................6-3
Part A: Scheduled Maintenance Services...........6-4
Using Your Maintenance Schedule....................6-4
Scheduled Maintenance...................................6-4
Part B: Owner Checks and Services.................6-9
At Each Fuel Fill............................................6-9
At Least Once a Month...................................6-9
At Least Twice a Year...................................6-10At Least Once a Year...................................6-10
Part C: Periodic MaintenanceInspections.........6-13
Steering, Suspension and Front Drive Axle
Boot and Seal Inspection............................6-13
Exhaust System Inspection............................6-13
Fuel System Inspection..................................6-13
Engine Cooling System Inspection...................6-14
Throttle System Inspection.............................6-14
Brake System Inspection................................6-14
Part D: Recommended Fluids and Lubricants. . . .6-15
Part E: Maintenance Record...........................6-16
Section 6 Maintenance Schedule
6-1