2003 CADILLAC DEVILLE engine

Ignition Transaxle Lock Check
While parked, and with the parking brake set, try to turn
the ignition key to OFF in each shift lever position.
·The key should turn to OFF only when the shift lever
is in PARK (P).
·The key should come out only in OFF.
Parking Brake and Automatic Transaxle
Park (P) Mechanism Check
{CAUTION:
When you are doing this check, your vehicle
could begin to move. You or others could be
injured and property could be damaged. Make
sure there is room in front of your vehicle in
case it begins to roll. Be ready to apply the
regular brake at once should the vehicle begin
to move.Park on a fairly steep hill, with the vehicle facing
downhill. Keeping your foot on the regular brake, set the
parking brake.
·To check the parking brake's holding ability: With
the engine running and transaxle in NEUTRAL (N),
slowly remove foot pressure from the regular
brake pedal. Do this until the vehicle is held by the
parking brake only.
·To check the PARK (P) mechanism's holding ability:
With the engine running, shift to PARK (P). Then
release the parking brake followed by the regular
brake.
Underbody Flushing Service
At least every spring, use plain water to ¯ush any
corrosive materials from the underbody. Take care to
clean thoroughly any areas where mud and other debris
can collect.
6-12

Part C: Periodic
MaintenanceInspections
Listed in this part are inspections and services which
should be performed at least twice a year (for instance,
each spring and fall).
You should let your dealer's
service department do these jobs. Make sure any
necessary repairs are completed at once.
Proper procedures to perform these services may be
found in a service manual. SeeService Publications
Ordering Information on page 7-11.
Steering, Suspension and Front
Drive Axle Boot and Seal Inspection
Inspect the front and rear suspension and steering
system for damaged, loose or missing parts, signs of
wear or lack of lubrication. Inspect the power steering
lines and hoses for proper hook-up, binding, leaks,
cracks, cha®ng, etc. Clean and then inspect the drive
axle boot seals for damage, tears or leakage. Replace
seals if necessary.
Exhaust System Inspection
Inspect the complete exhaust system. Inspect the body
near the exhaust system. Look for broken, damaged,
missing or out-of-position parts as well as open seams,
holes, loose connections or other conditions which
could cause a heat build-up in the ¯oor pan or could let
exhaust fumes into the vehicle. See
Engine Exhaust
on page 2-38.
Fuel System Inspection
Inspect the complete fuel system for damage or leaks.
6-13

Engine Cooling System Inspection
Inspect the hoses and have them replaced if they
are cracked, swollen or deteriorated. Inspect all pipes,
®ttings and clamps; replace as needed. Clean the
outside of the radiator and air conditioning condenser.
To help ensure proper operation, a pressure test of
the cooling system and pressure cap is recommended
at least once a year.
Throttle System Inspection
Inspect the 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
and cruise control cables.
Brake System Inspection
Inspect the complete system. Inspect brake lines and
hoses for proper hook-up, binding, leaks, cracks,
cha®ng, etc. Inspect disc brake pads for wear and rotors
for surface condition. Inspect other brake parts,
including calipers, parking brake, etc. You may need to
have your brakes inspected more often if your driving
habits or conditions result in frequent braking.
6-14

Part D: Recommended Fluids and
Lubricants
Fluids and lubricants identi®ed below by name, part
number or speci®cation may be obtained from your
dealer.
Usage Fluid/Lubricant
Engine OilEngine oil with the American
Petroleum Institute Certi®ed for
Gasoline Engines starburst symbol
of the proper viscosity. To determine
the preferred viscosity for your
vehicle's engine, see
Engine Oil on
page 5-13.
Engine Coolant50/50 mixture of clean, drinkable
water and use only
DEX-COOL
žCoolant. SeeEngine
Coolant on page 5-24.
Hydraulic Brake
SystemDelco Supreme 11 Brake Fluid or
equivalent DOT-3 brake ¯uid.
Windshield
Washer SolventGM Optikleen
žWasher Solvent or
equivalent.
Parking Brake
Cable GuidesChassis Lubricant (GM Part No.
U.S. 12377985, in Canada
88901242, or equivalent) or lubricant
meeting requirements of NLGI #2,
Category LB or GC-LB.
Usage Fluid/Lubricant
Power Steering
SystemGM Power Steering Fluid (GM Part
No. U.S. 1052884, in Canada
993294, or equivalent).
Automatic
TransaxleDEXRON
ž-IIII Automatic
Transmission Fluid.
Key Lock
CylindersMulti-Purpose Lubricant, Superlube
(GM Part No. U.S. 12346241, in
Canada 10953474, or equivalent).
Hood Latch
Assembly,
Secondary
Latch, Pivots,
Spring Anchor
and Release
PawlLubriplate Lubricant Aerosol (GM
Part No. U.S. 12346293, in Canada
992723, or equivalent) or lubricant
meeting requirements of NLGI #2,
Category LB or GC-LB.
Hood and Door
HingesMulti-Purpose Lubricant, Superlube
(GM Part No. U.S. 12346241, in
Canada 10953474, or equivalent).
Weatherstrip
ConditioningDielectric Silicone Grease (GM Part
No. U.S. 12345579, in Canada
10953014, or equivalent).
6-15

Reporting Safety Defects to
General Motors
In addition to notifying NHTSA (or Transport Canada) in
a situation like this, we certainly hope you'll notify us.
Please call us at 1-800-458-8006, or write:
Cadillac Customer Assistance Center
Cadillac Motor Car Division
P.O. Box 33169
Detroit, MI 48232-5169
In Canada, please call us at 1-800-263-3777 (English)
or 1-800-263-7854 (French). Or, write:
Customer Communication Centre, 163-005
General Motors of Canada Limited
1908 Colonel Sam Drive
Oshawa, Ontario L1H 8P7
Service Publications Ordering
Information
Service Manuals
Service Manuals have the diagnosis and repair
information on engines, transmission, axle, suspension,
brakes, electrical, steering, body, etc.
RETAIL SELL PRICE: $120.00
Transmission, Transaxle, Transfer
Case Unit Repair Manual
This manual provides information on unit repair service
procedures, adjustments and speci®cations for GM
transmissions, transaxles and transfer cases.
RETAIL SELL PRICE: $50.00
7-11

A
Accessory Power Outlets.................................3-27
Adaptive Seat Controls...................................... 1-3
Adding Washer Fluid.......................................5-37
Additional Program Information........................... 7-9
Additives, Fuel................................................. 5-6
Add-On Electrical Equipment............................5-93
Adjusting the Speakers (Balance/Fade)......3-83, 3-92
Air Bag Systems.............................................1-49
How Does an Air Bag Restrain?....................1-56
Servicing Your Air Bag-Equipped Vehicle.........1-59
What Makes an Air Bag In¯ate?....................1-56
What Will You See After an Air Bag In¯ates?......1-57
When Should an Air Bag In¯ate?...................1-55
Where Are the Air Bags?..............................1-52
Air Bag .........................................................3-45
Readiness Light..........................................3-45
Air Cleaner/Filter, Engine.................................5-19
AM .............................................................3-105
Analog Cluster................................................3-42
Antenna, Diversity Antenna System..................3-108
Antenna, XMŸ Satellite Radio
Antenna System........................................3-108
Anti-lock Brake System (ABS)............................ 4-7
Anti-Lock Brake, System Warning Light..............3-48
Anti-Pinch Feature..........................................2-17
Appearance Care............................................5-84
Care of Safety Belts....................................5-87
Chemical Paint Spotting...............................5-90Appearance Care (cont.)
Cleaning the Inside of Your Vehicle................5-84
Cleaning the Outside of Your Vehicle..............5-88
Finish Damage............................................5-90
Sheet Metal Damage...................................5-90
Underbody Maintenance...............................5-90
Vehicle Care/Appearance Materials................5-91
Weatherstrips..............................................5-87
Ashtrays........................................................3-28
Assist Handles...............................................2-53
Audio System(s).............................................3-80
Audio Steering Wheel Controls....................3-105
Care of Your Cassette Tape Player...............3-106
Care of Your CD Player..............................3-107
Care of Your CDs......................................3-107
Diversity Antenna System............................3-108
Glovebox-Mounted CD Changer...................3-100
Navigation/Radio System.............................3-100
Radio Personalization with Home and Away
Feature.................................................3-103
Radio with Cassette and CD.................3-81, 3-89
Setting the Time for Radios with Radio Data
Systems (RDS)........................................3-80
Setting the Time for Radios without Radio
Data Systems (RDS)................................3-80
Theft-Deterrent Feature...............................3-104
Understanding Radio Reception...................3-105
XMŸ Satellite Radio Antenna System...........3-108
Auto Exit Seat................................................3-69
Auto Exit Steering Wheel.................................3-70
1

Center Console Storage Area...........................2-51
Center Flex Storage Unit.................................2-52
Center Front Passenger Position, Safety Belts....1-21
Center High-Mounted Stoplamp (CHMSL)...........5-58
Chains, Tires..................................................5-70
Charging System Light....................................3-46
Checking Coolant............................................5-26
Checking Engine Oil........................................5-14
Checking Things Under the Hood......................5-10
Checking Your Restraint Systems......................1-60
Check...........................................................3-50
Engine Light...............................................3-50
Chemical Paint Spotting...................................5-90
Child Restraints..............................................1-35
Child Restraint Systems...............................1-35
Infants and Young Children...........................1-32
Lower Anchorages and Top Tethers for
Children (LATCH System)..........................1-41
Older Children.............................................1-29
Securing a Child Restraint Designed for the
LATCH System........................................1-43
Securing a Child Restraint in a Rear Seat
Position..................................................1-44
Securing a Child Restraint in the Right Front
Seat Position...........................................1-46
Top Strap Anchor Location............................1-41
Top Strap...................................................1-39
Where to Put the Restraint...........................1-38Cigarette Lighter.............................................3-28
Cleaning Aluminum or Chrome-Plated Wheels.....5-89
Cleaning Exterior Lamps/Lenses.......................5-88
Cleaning Fabric/Carpet....................................5-85
Cleaning Glass Surfaces..................................5-87
Cleaning Leather............................................5-86
Cleaning the Interior Plastic Components...........5-86
Cleaning the Mirror.................................2-40, 2-42
Cleaning the Speaker Covers...........................5-87
Cleaning the Top of the
Instrument Panel.........................................5-86
Cleaning Tires................................................5-89
Cleaning Vinyl................................................5-86
Cleaning Windshield and Wiper Blades..............5-89
Cleaning Wood Panels....................................5-87
Cleaning........................................................5-84
Inside of Your Vehicle..................................5-84
Outside of Your Vehicle................................5-88
Underbody Maintenance...............................5-90
Weatherstrips..............................................5-87
Climate Control System...................................3-36
Air Filter, Passenger Compartment.................3-36
Climate Controls Personalization....................3-39
Dual..........................................................3-29
Outlet Adjustment........................................3-33
Rear..........................................................3-34
Steering Wheel Controls...............................3-38
Comfort Controls, DIC Personalization................3-67
3

Compact Disc Changer Errors.........................3-103
Compact Disc Messages..........................3-88, 3-99
Compact Spare Tire........................................5-83
Compass Calibration.......................................2-41
Compass Operation.........................................2-41
Compass Variance..........................................2-41
Console Shift Lever.........................................2-36
Continuous Variable Road Sensing Suspension
(CVRSS)....................................................4-10
Control of a Vehicle.......................................... 4-5
Convenience Net............................................2-53
Coolant.........................................................3-50
Engine Temperature Gage............................3-50
Engine Temperature Warning Light.................3-49
Heater, Engine............................................2-25
Surge Tank Pressure Cap.............................5-27
Cooling System..............................................5-30
Cornering Lamps............................................3-17
Courtesy Lamps.............................................3-20
Cruise Control Light........................................3-55
Cruise Control................................................3-12
Current and Past Model Order Forms................7-12
Customer Assistance Information........................ 7-8
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................................................ 7-6Customer Assistance Information (cont.)
Reporting Safety Defects to General Motors....7-11
Reporting Safety Defects to the Canadian
Government............................................7-10
Reporting Safety Defects to the United States
Government............................................7-10
Roadside Service.......................................... 7-6
Service Publications Ordering Information........7-11
D
Daytime Running Lamps..................................3-16
Defensive Driving............................................. 4-2
Defogging and Defrosting.................................3-32
Digital Cluster.................................................3-41
Dinghy Towing................................................4-31
Display Mode.................................................3-43
Diversity Antenna System...............................3-108
Doing Your Own Service Work........................... 5-3
Dolly Towing..................................................4-32
Door............................................................... 2-9
Central Door Unlocking System....................... 2-9
Locks.......................................................... 2-8
Power Door Locks......................................... 2-9
Programmable Automatic Door Locks............... 2-9
Rear Door Security Locks.............................2-10
Doors Lock in Gear.........................................3-73
Doors Unlock in PARK (P)................................3-75
Doors Unlock Key Off......................................3-76
4