ECU BUICK LESABRE 2003 Service Manual

Roadside Assistance Program
Buick Motor Division is proud to offer Buick Premium
Roadside Assistance to customers for vehicles covered
under the 3 year/36,000 mile (60 000 km) new car
warranty (whichever occurs ®rst).
Our commitment to Buick owners has always included
superior service through our network of Buick dealers.
Buick Premium Roadside Assistance provides an
extra measure of convenience and security.
Buick's Roadside Assistance toll-free number is staffed
by a team of technically trained advisors, who are
available 24 hours a day, 365 days a year.
We take anxiety out of uncertain situations by providing
minor repair information over the phone or making
arrangements to tow your vehicle to the nearest Buick
dealer.
We will provide the following services for
3 years/36,000 miles (60 000 km), at no expense to you:
·Fuel delivery
·Lock-out service (identi®cation required)
·Tow to nearest dealership for warranty service
·Change a ¯at tire
·Jump startsWe have quick, easy access to telephone numbers of the
following additional services depending on your needs:
·Hotels
·Glass replacement
·Tire repair facilities
·Rental vehicle or taxis
·Airports or train stations
·Police, ®re department or hospitals
In many instances, mechanical failures are covered
under Buick's comprehensive warranty. However, when
other services are utilized, our advisors will explain
any payment obligations you might incur.
For prompt and efficient assistance when calling, please
provide the following information to give the advisor:
·Location of vehicle
·Telephone number of your location
·Vehicle model, year and color
·Mileage of vehicle
·Vehicle Identi®cation Number (VIN)
·Vehicle license plate number
Buick reserves the right to limit services or
reimbursement to an owner or driver when, in Buick's
judgement, the claims become excessive in frequency or
type of occurrence.
7-6

While we hope you never have the occasion to use our
service, it is added security while traveling for you
and your family. Remember, we're only a phone call
away. Buick Roadside Assistance: 1-800-252-1112, text
telephone (TTY) users, call 1-888-889-2438.
Canadian Roadside Assistance
Vehicles purchased in Canada have an extensive
Roadside Assistance program accessible from anywhere
in Canada or the United States. Please refer to the
Warranty and Owner Assistance Information book.
Courtesy Transportation
Buick has always exempli®ed quality and value in its
offering of motor vehicles. To enhance your ownership
experience, we and our participating dealers are
proud to offer Courtesy Transportation, a customer
support program for new vehicles.The Courtesy Transportation program is offered to retail
purchase/lease customers in conjunction with the
Bumper-to-Bumper coverage provided by the New
Vehicle Limited Warranty. Several transportation options
are available when warranty repairs are required.
This will reduce your inconvenience during warranty
repairs.
Plan Ahead When Possible
When your vehicle requires warranty service, you
should contact your dealer and request an appointment.
By scheduling a service appointment and advising
your service consultant of your transportation needs,
your dealer can help minimize your inconvenience.
If your vehicle cannot be scheduled into the service
department immediately, keep driving it until it can be
scheduled for service, unless, of course, the problem is
safety-related. If it is, please call your dealership, let
them know this, and ask for instructions.
If the dealer requests that you simply drop the vehicle
off for service, you are urged to do so as early in
the work day as possible to allow for same day repair.
7-7

Checking Things Under the Hood......................5-10
Checking Your Restraint Systems......................1-54
Check...........................................................3-40
Engine Light...............................................3-40
Tire Pressure System...................................5-59
Chemical Paint Spotting...................................5-83
Child Restraints..............................................1-33
Child Restraint Systems...............................1-33
Infants and Young Children...........................1-29
Lower Anchorages and Top Tethers for
Children (LATCH System)..........................1-38
Older Children.............................................1-27
Securing a Child Restraint Designed for
the LATCH System...................................1-40
Securing a Child Restraint in a Rear Seat
Position..................................................1-41
Securing a Child Restraint in the Right
Front Seat Position...................................1-43
Top Strap Anchor Location............................1-38
Top Strap...................................................1-37
Where to Put the Restraint...........................1-36
Chime Level Adjustment..................................3-81
Cigarette Lighter.............................................3-23
Cleaning Aluminum or Chrome-Plated Wheels.....5-82
Cleaning Exterior Lamps/Lenses.......................5-81
Cleaning Fabric/Carpet....................................5-77
Cleaning Glass Surfaces..................................5-79
Cleaning Interior Plastic Components.................5-79Cleaning Leather............................................5-79
Cleaning the Top of the Instrument Panel...........5-79
Cleaning Tires................................................5-82
Cleaning Vinyl................................................5-79
Cleaning Windshield and Wiper Blades..............5-81
Cleaning........................................................5-77
Inside of Your Vehicle..................................5-77
Outside of Your Vehicle................................5-80
Underbody Maintenance...............................5-83
Weatherstrips..............................................5-80
Climate Control System...................................3-24
Climate Controls Personalization....................3-31
Dual Automatic............................................3-26
Outlet Adjustment........................................3-30
Steering Wheel Controls...............................3-31
Compact Disc Errors.......................................3-76
Compact Disc Messages..........................3-62, 3-73
Compact Spare Tire........................................5-76
Compass Calibration.......................................2-34
Compass Operation.........................................2-34
Compass Variance..........................................2-34
Content Theft-Deferrent....................................2-18
Control of a Vehicle.......................................... 4-5
Convenience Net............................................2-43
Coolant.........................................................3-40
Engine Temperature Gage............................3-40
Heater, Engine............................................2-24
Cooling System..............................................5-28
3

Cornering Lamps............................................3-15
Courtesy Lamps.............................................3-18
Cruise Control Light........................................3-44
Cruise Control................................................3-11
Current and Past Model Order Forms................7-11
Customer Assistance Information........................ 7-7
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 Program for Persons with
Disabilities................................................ 7-5
Reporting Safety Defects to General Motors....7-10
Reporting Safety Defects to the Canadian
Government............................................7-10
Reporting Safety Defects to the United States
Government.............................................. 7-9
Roadside Assistance Program......................... 7-6
Service Publications Ordering Information........7-10
D
Daytime Running Lamps..................................3-15
Defensive Driving............................................. 4-2
Defogging and Defrosting.........................3-25, 3-29
Delayed Entry Lighting.....................................3-18Delayed Exit Lighting.......................................3-18
Delayed Locking.....................................2-11, 3-53
Dinghy Towing................................................4-32
Diversity Antenna System.................................3-81
Doing Your Own Service Work........................... 5-3
Dolly Towing..................................................4-33
Door.............................................................2-10
Central Door Unlocking System.....................2-10
Delayed Locking..........................................2-11
Door Ajar Reminder.....................................2-11
Locks.......................................................... 2-9
Power Door Locks.......................................2-10
Programmable Automatic Door Locks.............2-11
Rear Door Security Locks.............................2-13
Driver ID.......................................................3-54
Driver Information Center (DIC).........................3-45
DIC Controls and Displays............................3-46
DIC Vehicle Personalization..........................3-50
DIC Warnings and Messages........................3-49
Driver............................................................1-12
Position, Safety Belt.....................................1-12
Driving On Grades..........................................4-41
Driving on Snow or Ice....................................4-26
Driving Through Deep Standing Water...............4-19
Driving Through Flowing Water.........................4-20
Driving with a Trailer.......................................4-39
4

K
Key Lock Cylinders Service..............................6-18
Key Reminder Warning....................................2-23
Keyless Entry System....................................... 2-5
Keys............................................................... 2-3
L
Lamps...........................................................3-14
Exterior......................................................3-14
Interior.......................................................3-17
Language Selection.........................................3-54
Lap Belt........................................................1-19
Lap-Shoulder Belt...................................1-12, 1-21
LATCH System...............................................1-38
Child Restraints...........................................1-38
Securing a Child Restraint Designed for the
LATCH System........................................1-40
Leaving Your Vehicle With the Engine
Running.....................................................2-29
Leaving Your Vehicle.......................................2-13
Lighted Visor Vanity Mirror...............................2-17
Light.............................................................3-36
Air Bag Readiness.......................................3-36
Anti-Lock Brake System Warning...................3-38
Battery Warning..........................................3-37
Brake System Warning.................................3-37Light (cont.)
Cruise Control.............................................3-44
Malfunction Indicator....................................3-40
Oil Pressure...............................................3-43
Safety Belt Reminder...................................3-36
Security.....................................................3-44
Service Vehicle Soon...................................3-44
TCS Warning Light......................................3-39
Traction Control System (TCS) Warning..........3-39
Loading Your Vehicle.......................................4-33
Lockout Protection..........................................2-13
Locks............................................................2-10
Central Door Unlocking System.....................2-10
Delayed Locking..........................................2-11
Door........................................................... 2-9
Leaving Your Vehicle....................................2-13
Lockout Protection.......................................2-13
Power Door................................................2-10
Programmable Automatic Door Locks.............2-11
Rear Door Security Locks.............................2-13
Long Trip/Highway De®nition.............................. 6-6
Long Trip/Highway Intervals............................... 6-6
Long Trip/Highway Scheduled Maintenance........6-13
Loss of Control...............................................4-15
Lumbar........................................................... 1-3
Manual Controls............................................ 1-3
Power Controls............................................. 1-3
8

Personalization, Climate Controls......................3-31
Personalization Features.................................... 2-6
Personalization Programming............................2-12
Plan Ahead When Possible................................ 7-7
Playing a Cassette Tape..................................3-70
Playing a Compact Disc..................3-60, 3-71, 3-75
Playing the Radio...................................3-56, 3-63
Power Steering...............................................4-10
Power...........................................................3-22
Accessory Outlets........................................3-22
Door Locks.................................................2-10
Electrical System.........................................5-86
Lumbar Controls........................................... 1-3
Seat............................................................ 1-2
Steering Fluid.............................................5-35
Windows....................................................2-17
Programmable Automatic Door Locks.................2-11
Programming the HomeLink Transmitter.............2-39
Q
Questions and Answers About Safety Belts.........1-11
R
Radiator Pressure Cap....................................5-26
Radio Data System (RDS)...............................3-62
Radio Messages.....................................3-60, 3-67
Radios..........................................................3-55Care of Your Cassette Tape Player................3-79
Care of Your CD Player...............................3-80
Care of Your CDs........................................3-80
Personal Choice Radio Controls....................3-77
Radio with Cassette and CD.........................3-62
Radio with CD............................................3-56
Setting the Time..........................................3-55
Theft-Deterrent............................................3-77
Trunk-Mounted CD Changer..........................3-73
Understanding Reception..............................3-78
RainsenseŸ II Wipers.....................................3-10
RDS Messages......................................3-59, 3-66
Rear Door Security Locks................................2-13
Rear Safety Belt Comfort Guides......................1-24
Rear Seat Passengers, Safety Belts..................1-21
Rear Underseat Fuse Block..............................5-90
Rear Window Defogger............................3-26, 3-29
Rearview Mirror, Automatic Dimming
with Compass.............................................2-33
Rearview Mirror, Automatic Dimming..................2-33
Rearview Mirrors.............................................2-33
Reclining Seatbacks.......................................... 1-4
Recreational Vehicle Towing.............................4-32
Remote Keyless Entry System, Operation............ 2-5
Remote Keyless Entry System............................ 2-5
Remote Trunk Release Lockout........................2-14
Removing the Flat Tire and Installing the
Spare Tire..................................................5-70
Removing the Spare Tire and Tools...................5-68
11

Seats (cont.)
Memory.....................................................2-44
Power Lumbar.............................................. 1-3
Power Seats................................................. 1-2
Reclining Seatbacks...................................... 1-4
Securing a Child Restraint................................1-40
Designed for the LATCH System...................1-40
Rear Seat Position......................................1-41
Right Front Seat Position..............................1-43
Security Feedback....................................2-7, 3-52
Security Light.................................................3-44
Selecting the Right Schedule, Maintenance.......... 6-5
Sensors.................................................3-25, 3-29
Service Bulletins.............................................7-11
Service Engine Soon Light...............................3-40
Service Manuals.............................................7-10
Service........................................................... 5-3
Adding Equipment to the Outside of
Your Vehicle.............................................. 5-4
Doing Your Own Work................................... 5-3
Engine Soon Light.......................................3-40
Publications Ordering Information...................7-10
Vehicle Soon Light.......................................3-44
Setting Preset Stations............................3-57, 3-64
Setting the Time.............................................3-55
Setting the Tone (Bass/Treble)..................3-57, 3-65
Sheet Metal Damage.......................................5-82
Shifting Into Park (P).......................................2-28Shifting Out of Park (P)...................................2-30
Short Trip/City De®nition.................................... 6-5
Short Trip/City Intervals..................................... 6-5
Short Trip/City Scheduled Maintenance................ 6-6
Skidding........................................................4-15
Some Other Rainy Weather Tips.......................4-20
Special Fabric Cleaning Problems.....................5-78
Speci®cations, Capacities.................................5-93
Speedometer..................................................3-35
Starter Switch Check.......................................6-19
Starting Your Engine.......................................2-23
Steering in Emergencies..................................4-12
Steering, Suspension and Front Drive Axle
Boot and Seal Inspection..............................6-21
Steering Tips..................................................4-10
Steering Wheel Climate Controls.......................3-31
Steering Wheel Controls, Audio.........................3-78
Steering........................................................4-10
Storage Areas................................................2-42
Center Console Storage Area........................2-42
Convenience Net.........................................2-43
Glove Box..................................................2-42
Storing the Flat Tire and Tools..........................5-74
Storing the Spare Tire and Tools.......................5-75
Stuck in Sand, Mud, Ice or Snow......................4-30
Sun Visors.....................................................2-17
Sunroof.........................................................2-43
13

T
Tachometer....................................................3-35
Taillamps.......................................................5-55
Back-Up Lamps...........................................5-55
Turn Signal, and Stoplamps..........................5-53
TCS Warning Light..........................................3-39
Testing the Alarm............................................2-19
Theater Dimming............................................3-18
Theft-Deterrent, Radio.....................................3-77
Theft-Deterrent Systems...................................2-18
Content Theft-Deterrent................................2-18
PASS-Key
žIII Operation..............................2-20
PASS-KeyžIII .............................................2-19
Throttle System Inspection...............................6-22
Tilt Wheel........................................................ 3-7
Tire In¯ation Check.........................................6-17
Tires.............................................................5-58
Buying New Tires........................................5-62
Chains.......................................................5-66
Changing a Flat Tire....................................5-67
Check Tire Pressure System.........................5-59
Compact Spare Tire.....................................5-76
If a Tire Goes Flat.......................................5-66
In¯ation -- Tire Pressure...............................5-58
Inspection and Rotation................................5-60
Uniform Tire Quality Grading.........................5-63Tires (cont.)
Wheel Alignment and Tire Balance.................5-64
Wheel Replacement.....................................5-65
When It Is Time for New Tires......................5-62
To Use the Engine Coolant Heater....................2-24
Top Strap Anchor Location...............................1-38
Top Strap......................................................1-37
Torque Lock...................................................2-30
Total Weight on Your Vehicle's Tires..................4-38
Towing..........................................................4-32
Recreational Vehicle.....................................4-32
Towing a Trailer..........................................4-35
Your Vehicle...............................................4-31
Traction........................................................... 4-9
Control System (TCS).................................... 4-9
Control System Warning Light.......................3-39
Trailer Brakes.................................................4-39
Trailer Wiring Harness.....................................4-39
Transaxle Operation, Automatic.........................2-25
Transaxle.......................................................5-21
Fluid, Automatic...........................................5-21
Transmission, Transaxle, Transfer Case Unit
Repair Manual............................................7-10
Transportation Options...................................... 7-8
Trip Odometer................................................3-35
Trunk Lock Release........................................2-14
Trunk Security Override...................................2-15
14