ECU CADILLAC DEVILLE 2005 8.G Service Manual

{CAUTION:
A battery that is not properly vented can let
sulfuric acid fumes into the area under the rear
seat cushion. These fumes can damage your
rear seat safety belt systems. You may not be
able to see this damage, and the safety belts
might not provide the protection needed in a
crash. If a replacement battery is ever needed,
it must be vented in the same manner as the
original battery. Always make sure that the
vent hose is properly reattached before
reinstalling the seat cushion.
To be sure the vent hose (A) is properly attached, the
vent hose connectors (B) must be securely reattached to
the vent outlets (C) on each side of the battery, and
the vent assembly grommet (D) must be secured to the
oor pan (E).
5-41

Tire Chains
{CAUTION:
If your vehicle has P235/55R17, LT235/60R17E
or P235/60R17/EL size tires, do not use tire
chains, there is not enough clearance.
Tire chains used on a vehicle without the
proper amount of clearance can cause damage
to the brakes, suspension or other vehicle
parts. The area damaged by the tire chains
could cause you to lose control of your vehicle
and you or others may be injured in a crash.
Use another type of traction device only if its
manufacturer recommends it for use on your
vehicle and tire size combination and road
conditions. Follow that manufacturer’s
instructions. To help avoid damage to your
vehicle, drive slowly, readjust or remove the
device if it is contacting your vehicle, and do
not spin your wheels.
If you do nd traction devices that will t,
install them on the front tires.Notice:If your vehicle has a tire size other than
P235/55R17, LT235/60R17E or P235/60R17/EL
size tires, use tire chains only where legal and only
when you must. Use only SAE Class “S” type
chains that are the proper size for your tires. Install
them on the front tires and tighten them as tightly
as possible with the ends securely fastened.
Drive slowly and follow the chain manufacturer’s
instructions. If you can hear the chains contacting
your vehicle, stop and retighten them. If the contact
continues, slow down until it stops. Driving too
fast or spinning the wheels with chains on will
damage your vehicle.
5-75

To reinstall the rear seat cushion, do the following:
{CAUTION:
A safety belt that is not properly routed
through the seat cushion or is twisted will not
provide the protection needed in a crash.
CAUTION: (Continued)
CAUTION: (Continued)
If the safety belt has not been routed through
the seat cushion at all, it will not be there to
work for the next passenger. The person
sitting in that position could be badly injured.
After reinstalling the seat cushion, always
check to be sure that the safety belts are
properly routed and are not twisted.
1. Buckle the center passenger position safety belt,
then route the safety belts through the proper slots
in the seat cushion. Do not let the safety belts
get twisted.
2. Slide the rear of the cushion up and under the
seatback so the rear-locating guides hook into
the wire loops on the back frame.
3. With the seat cushion lowered, push rearward and
then press down on the seat cushion until the
spring locks on both ends engage.
4. Check to make sure the safety belts are properly
routed and that no portion of any safety belt is
trapped under the seat. Also make sure the seat
cushion is secured.
5-102

Owner Checks and Services
These owner checks and services should be performed
at the intervals specied to help ensure the safety,
dependability and emission control performance of your
vehicle. Your GM Goodwrench
®dealer can assist
you with these checks and services.
Be sure any necessary repairs are completed at once.
Whenever any uids or lubricants are added to your
vehicle, make sure they are the proper ones, as shown
inRecommended Fluids and Lubricants on page 6-12.
At Each Fuel Fill
It is important to perform these underhood checks at
each fuel ll.
Engine Oil Level Check
Check the engine oil level and add the proper oil if
necessary. SeeEngine Oil on page 5-14for further
details.
Notice:It is important to check your oil regularly
and keep it at the proper level. Failure to keep your
engine oil at the proper level can cause damage
to your engine not covered by your warranty.
Engine Coolant Level Check
Check the engine coolant level and add
DEX-COOL®coolant mixture if necessary. SeeEngine
Coolant on page 5-24for further details.
Windshield Washer Fluid Level Check
Check the windshield washer uid level in the windshield
washer tank and add the proper uid if necessary.
At Least Once a Month
Tire Ination Check
Visually inspect your vehicle’s tires and make sure they
are inated to the correct pressures. Do not forget to
check the spare tire. SeeTires on page 5-57for further
details. Check to make sure the spare tire is stored
securely. SeeChanging a Flat Tire on page 5-77.
Tire Wear Inspection
Tire rotation may be required for high mileage highway
drivers prior to the Engine Oil Life System service
notication. Check the tires for wear and, if necessary,
rotate the tires. SeeTire Inspection and Rotation on
page 5-69.
6-9

Checking Things Under the Hood......................5-10
Chemical Paint Spotting...................................5-94
Child Restraints
Child Restraint Systems...............................1-34
Infants and Young Children...........................1-31
Lower Anchorages and Top Tethers for
Children (LATCH System)..........................1-40
Older Children.............................................1-28
Securing a Child Restraint Designed for
the LATCH System...................................1-42
Securing a Child Restraint in a
Rear Seat Position...................................1-42
Securing a Child Restraint in the
Center Front Seat Position........................1-44
Securing a Child Restraint in the
Right Front Seat Position..........................1-45
Top Strap...................................................1-38
Top Strap Anchor Location............................1-39
Where to Put the Restraint...........................1-37
Cigarette Lighter.............................................3-29
Cleaning
Aluminum or Chrome-Plated Wheels..............5-93
Exterior Lamps/Lenses.................................5-91
Fabric/Carpet..............................................5-89
Finish Care.................................................5-92
Glass Surfaces............................................5-90
Inside of Your Vehicle..................................5-87
Instrument Panel, Vinyl, and Other
Plastic Surfaces.......................................5-90
Leather......................................................5-89Cleaning (cont.)
Speaker Covers..........................................5-90
Tires..........................................................5-94
Underbody Maintenance...............................5-94
Washing Your Vehicle...................................5-91
Weatherstrips..............................................5-91
Windshield and Wiper Blades........................5-92
Wood Panels..............................................5-90
Climate Control System
Air Filter, Passenger Compartment.................3-36
Climate Controls Personalization....................3-39
Dual..........................................................3-30
Outlet Adjustment........................................3-34
Rear..........................................................3-35
Steering Wheel Controls...............................3-38
Comfort Controls, DIC Personalization................3-68
Comfort Guides, Rear Safety Belt.....................1-24
Compact Spare Tire........................................5-86
Continuous Variable Road Sensing
Suspension (CVRSS)...................................4-10
Control of a Vehicle.......................................... 4-5
Convenience Net............................................2-51
Coolant
Engine Temperature Gage............................3-49
Engine Temperature Warning Light.................3-49
Heater, Engine............................................2-27
Surge Tank Pressure Cap.............................5-27
Cooled Seats................................................... 1-3
Cooling System..............................................5-30
Cornering Lamps............................................3-18
3

Courtesy Lamps.............................................3-21
Cruise Control................................................3-12
Cruise Control Light........................................3-54
Customer Assistance Information
Courtesy Transportation.................................. 7-7
Customer Assistance for Text
Telephone (TTY) Users............................... 7-4
Customer Assistance Offices........................... 7-4
Customer Satisfaction Procedure..................... 7-2
GM Mobility Reimbursement Program............... 7-5
Reporting Safety Defects to General Motors.......7-11
Reporting Safety Defects to the
Canadian Government..............................7-11
Reporting Safety Defects to the
United States Government.........................7-10
Roadside Service.......................................... 7-5
Service Publications Ordering Information........7-11
D
Daytime Running Lamps..................................3-16
Defensive Driving............................................. 4-2
Diversity Antenna System...............................3-107
Doing Your Own Service Work........................... 5-4
Door
Central Door Unlocking System.....................2-10
Locks.......................................................... 2-9
Power Door Locks.......................................2-10Door (cont.)
Programmable Automatic Door Locks.............2-10
Rear Door Security Locks.............................2-11
Driver
Position, Safety Belt.....................................1-13
Driver Information Center (DIC).........................3-57
Climate Controls and Radio System
Personalization........................................3-68
DIC Controls and Displays............................3-57
DIC Vehicle Personalization..........................3-68
DIC Warnings and Messages........................3-60
Driving
At Night.....................................................4-16
City...........................................................4-20
Defensive..................................................... 4-2
Drunken....................................................... 4-2
Freeway.....................................................4-21
Hill and Mountain Roads..............................4-23
In Rain and on Wet Roads...........................4-17
Rocking Your Vehicle to Get it Out.................4-30
Winter........................................................4-25
Dual Climate Control System............................3-30
E
Electrical System
Add-On Equipment......................................5-97
Fuses and Circuit Breakers...........................5-98
4

I
Ignition Positions.............................................2-24
Inadvertent Power Battery Saver.......................3-22
Infants and Young Children, Restraints...............1-31
Ination -- Tire Pressure..................................5-65
Instrument Panel
Overview..................................................... 3-4
Storage Area..............................................2-49
Instrument Panel (I/P)
Brightness..................................................3-20
Cluster.......................................................3-41
J
Jump Starting.................................................5-42
K
Keyless Entry System....................................... 2-5
Keys............................................................... 2-3
L
Labelling, Tire Sidewall....................................5-58
Lamps
Battery Load Management............................3-22
Cornering...................................................3-18Lamps (cont.)
Courtesy....................................................3-21
Exterior......................................................3-15
Exterior Lighting Battery Saver......................3-20
Fog ...........................................................3-18
Inadvertent Power Battery Saver....................3-22
Reading.....................................................3-21
Twilight Sentinel
®........................................3-18
LATCH System
Child Restraints...........................................1-40
Securing a Child Restraint Designed for
the LATCH System...................................1-42
Light
Airbag Readiness........................................3-45
Anti-Lock Brake System Warning...................3-48
Brake System Warning and Parking Brake
Indicator.................................................3-47
Charging System.........................................3-46
Cruise Control.............................................3-54
Engine Coolant Temperature Warning.............3-49
Fog Lamp..................................................3-54
Highbeam On.............................................3-54
Lights On Reminder.....................................3-54
Malfunction Indicator....................................3-50
Oil Pressure...............................................3-53
Safety Belt Reminder...................................3-45
Security.....................................................3-53
TCS Warning Light......................................3-48
Traction Control System (TCS) Warning..........3-48
7

Lighting
Entry.........................................................3-21
Parade Dimming..........................................3-21
Loading Your Vehicle.......................................4-30
Lockout Protection..........................................2-11
Locks
Central Door Unlocking System.....................2-10
Door........................................................... 2-9
Lockout Protection.......................................2-11
Power Door................................................2-10
Programmable Automatic Door Locks.............2-10
Rear Door Security Locks.............................2-11
Loss of Control...............................................4-14
Lumbar
Massaging Controls....................................... 1-3
Power Controls............................................. 1-2
Lumbar Controls, Rear Power............................ 1-7
M
Maintenance Schedule
Additional Required Services........................... 6-6
At Each Fuel Fill........................................... 6-9
At Least Once a Month.................................. 6-9
At Least Once a Year..................................6-10
Introduction.................................................. 6-2
Maintenance Footnotes.................................. 6-7Maintenance Schedule (cont.)
Maintenance Record....................................6-14
Maintenance Requirements............................. 6-2
Normal Maintenance Replacement Parts.........6-13
Owner Checks and Services........................... 6-9
Recommended Fluids and Lubricants.............6-12
Scheduled Maintenance................................. 6-4
Using.......................................................... 6-2
Your Vehicle and the Environment................... 6-2
Malfunction Indicator Light................................3-50
Map Pocket...................................................2-51
Massaging Lumbar Controls............................... 1-3
Memory Mirrors..............................................2-53
Memory Seat.................................................2-53
Memory Steering Wheel Controls......................2-53
Message
DIC Warnings and Messages........................3-60
Mirrors
Automatic Dimming Rearview with OnStar
®.......2-37
Automatic Dimming Rearview with OnStar®
and Compass...........................................2-38
Memory.....................................................2-53
Outside Automatic Dimming Mirror.................2-41
Outside Convex Mirror.................................2-41
Outside Curb View Assist Mirror....................2-41
Outside Heated Mirrors................................2-41
Outside Power Mirrors..................................2-40
MyGMLink.com................................................ 7-3
8

Power (cont.)
Lumbar Controls........................................... 1-2
Rear Lumbar Controls.................................... 1-7
Retained Accessory (RAP)............................2-25
Seat............................................................ 1-2
Steering Fluid.............................................5-35
Tilt Wheel and Telescopic Steering Column......... 3-7
Windows....................................................2-16
Pretensioners, Safety Belt................................1-27
Programmable Automatic Door Locks.................2-10
Q
Questions and Answers About Safety Belts.........1-12
R
Radios..........................................................3-80
Care of Your Cassette Tape Player...............3-105
Care of Your CD Player..............................3-107
Care of Your CDs......................................3-106
DIC Personalization.....................................3-68
Glovebox-Mounted CD Changer...................3-100
Navigation/Radio System, see Navigation
Manual...................................................3-99
Radio Personalization with Home and
Away Feature........................................3-103
Radio with Cassette and CD.........................3-88Radios (cont.)
Radio with CD............................................3-81
Setting the Time for Radios with
Radio Data Systems (RDS).......................3-81
Setting the Time for Radios without
Radio Data Systems (RDS).......................3-80
Theft-Deterrent..........................................3-103
Understanding Reception............................3-104
Rainsense™ II Wipers.....................................3-10
Reading Lamps..............................................3-21
Rear Climate Control System............................3-35
Rear Door Security Locks................................2-11
Rear Heated Seats........................................... 1-6
Rear Safety Belt Comfort Guides......................1-24
Rear Seat Passengers, Safety Belts..................1-21
Rear Storage Area..........................................2-51
Rear Storage Door Trim Armrest.......................2-51
Rearview Mirror, Automatic Dimming with
OnStar®.....................................................2-37
Rearview Mirror, Automatic Dimming with
OnStar
®and Compass.................................2-38
Reclining Seatbacks.......................................... 1-4
Recommended Fluids and Lubricants.................6-12
Recreational Vehicle Towing.............................4-35
Remote Keyless Entry System............................ 2-5
Remote Keyless Entry System, Operation............ 2-6
Removing the Flat Tire and Installing the
Spare Tire..................................................5-80
Removing the Spare Tire and Tools...................5-78
10

Replacement Bulbs.........................................5-56
Reporting Safety Defects
Canadian Government..................................7-11
General Motors...........................................7-11
United States Government............................7-10
Restraint System Check
Checking the Restraint Systems....................1-58
Replacing Restraint System Parts
After a Crash..........................................1-59
Retained Accessory Power (RAP)......................2-25
Right Front Passenger Position, Safety Belts......1-20
Roadside
Service........................................................ 7-5
Rocking Your Vehicle to Get it Out....................4-30
Running the Engine While Parked.....................2-36
S
Safety Belt
Pretensioners..............................................1-27
Reminder Light............................................3-45
Safety Belts
Care of......................................................5-91
Center Front Passenger Position....................1-20
Driver Position............................................1-13
How to Wear Safety Belts Properly................1-12
Questions and Answers About
Safety Belts.............................................1-12Safety Belts (cont.)
Rear Safety Belt Comfort Guides for
Children and Small Adults.........................1-24
Rear Seat Passengers.................................1-21
Right Front Passenger Position......................1-20
Safety Belt Extender....................................1-27
Safety Belt Use During Pregnancy.................1-19
Safety Belts Are for Everyone......................... 1-7
Safety Warnings and Symbols.............................. iii
Scheduled Maintenance..................................... 6-4
Seats
Heated and Cooled Seats.............................. 1-3
Heated Seats, Rear....................................... 1-6
Massaging Lumbar........................................ 1-3
Memory.....................................................2-53
Power Lumbar.............................................. 1-2
Power Lumbar, Rear...................................... 1-7
Power Seats................................................. 1-2
Reclining Seatbacks...................................... 1-4
Securing a Child Restraint
Center Front Seat Position............................1-44
Designed for the LATCH System...................1-42
Rear Seat Position......................................1-42
Right Front Seat Position..............................1-45
Security Light.................................................3-53
Service........................................................... 5-3
Adding Equipment to the Outside of
Your Vehicle.............................................. 5-5
Doing Your Own Work................................... 5-4
11