brake BUICK LESABRE 2003 Repair Manual

Fuel System Inspection
Inspect the complete fuel system for damage or leaks.
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.
6-22

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 5-23.
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).
Fuel Door,
Glove Box
Door, Console
Door and Rear
Compartment
Lid 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).
6-23

Reporting Safety Defects to the
Canadian Government
If you live in Canada, and you believe that your vehicle
has a safety defect, you should immediately notify
Transport Canada, in addition to notifying General
Motors of Canada Limited. You may write to:
Transport Canada
330 Sparks Street
Tower C
Ottawa, Ontario K1A 0N5
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 1-800-521-7300, or write:
Buick Customer Assistance Center
P.O. Box 33136
Detroit, MI 48232-5136
In Canada, please call us at 1-800-263-3777 (English)
or 1-800-263-7854 (French). Or, write:
General Motors of Canada Limited
Customer Communication Centre, 163-005
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
7-10

A
Accessory Power Outlets.................................3-22
Adding Washer Fluid.......................................5-36
Additional Program Information........................... 7-9
Additives, Fuel................................................. 5-6
Add-On Electrical Equipment............................5-85
Adjusting the Speakers (Balance/Fade)......3-57, 3-65
Air Bag Systems.............................................1-46
How Does an Air Bag Restrain?....................1-52
Servicing Your Air Bag-Equipped Vehicle.........1-54
What Makes an Air Bag In¯ate?....................1-51
What Will You See After an Air
Bag In¯ates?...........................................1-52
When Should an Air Bag In¯ate?...................1-50
Where Are the Air Bags?..............................1-49
Air Bag .........................................................3-36
Readiness Light..........................................3-36
Air Cleaner/Filter, Engine.................................5-18
AM ...............................................................3-78
Antenna, Diversity Antenna System...................3-81
Antenna, XMŸ Satellite Radio
Antenna System..........................................3-81
Anti-lock Brake System (ABS)............................ 4-7
Anti-Lock Brake, System Warning Light..............3-38
Appearance Care............................................5-77
Care of Safety Belts....................................5-80
Chemical Paint Spotting...............................5-83Appearance Care (cont.)
Cleaning the Inside of Your Vehicle................5-77
Cleaning the Outside of Your Vehicle..............5-80
Finish Damage............................................5-83
Sheet Metal Damage...................................5-82
Underbody Maintenance...............................5-83
Vehicle Care/Appearance Materials................5-84
Weatherstrips..............................................5-80
Ashtrays........................................................3-23
Audio System(s).............................................3-55
Audio Steering Wheel Controls......................3-78
Care of Your Cassette Tape Player................3-79
Care of Your CD Player...............................3-80
Care of Your CDs........................................3-80
Chime Level Adjustment...............................3-81
Diversity Antenna System.............................3-81
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 Feature................................3-77
Trunk-Mounted CD Changer..........................3-73
Understanding Radio Reception.....................3-78
XMŸ Satellite Radio Antenna System............3-81
Automatic Door Locks.....................................3-51
Automatic Level Control...................................4-35
Automatic Operation........................................3-27
Automatic Transaxle Check..............................6-18
1

Automatic Transaxle Shift Lock Control
System Check.............................................6-19
Automatic Transaxle........................................5-21
Fluid..........................................................5-21
Operation...................................................2-25
B
Backing Up....................................................4-40
Battery Load Management...............................3-20
Battery Replacement......................................... 2-8
Battery Warning Light......................................3-37
Battery..........................................................5-40
Before Leaving on a Long Trip.........................4-22
Body Lubrication Service..................................6-18
Brake Fluid....................................................5-37
Brake Wear...................................................5-39
Brake............................................................2-27
Parking......................................................2-27
System Inspection.......................................6-22
System Warning Light..................................3-37
Brakes..........................................................5-37
Braking in Emergencies..................................... 4-8
Braking........................................................... 4-6
Break-In, New Vehicle.....................................2-21
Bulb Replacement...........................................5-52
Front Turn Signal Lamps..............................5-53
Halogen Bulbs............................................5-52
Headlamp Aiming........................................5-47Bulb Replacement (cont.)
Headlamps.................................................5-52
Replacement Bulbs......................................5-56
Taillamps and Back-Up Lamps.......................5-55
Taillamps, Turn Signal, and Stoplamps............5-53
Buying New Tires...........................................5-62C
California Fuel.................................................. 5-5
Canada ± Customer Assistance.......................... 7-4
Canadian Owners................................................ ii
Canadian Roadside Assistance........................... 7-7
Capacities and Speci®cations............................5-93
Carbon Monoxide...................4-25, 4-35, 2-14, 2-31
Care of.........................................................5-80
Safety Belts................................................5-80
Your Cassette Tape Player............................3-79
Your CD Player...........................................3-80
Your CDs ...................................................3-80
Cassette Tape Messages.................................3-71
Cassette Tape Player Service...........................6-17
CD Adapter Kits.............................................3-71
CD Changer, Trunk-Mounted............................3-73
Center Console Storage Area...........................2-42
Center Front Passenger Position, Safety Belts....1-19
Chains, Tires..................................................5-66
Checking Coolant............................................5-25
Checking Engine Oil........................................5-13
2

Highway Hypnosis...........................................4-23
Hill and Mountain Roads..................................4-24
Hitches..........................................................4-38
HomeLink Transmitter, Programming..................2-39
HomeLink
žTransmitter....................................2-38
Hood............................................................5-10
Checking Things Under................................5-10
Release.....................................................5-11
Horn............................................................... 3-7
How to Add Coolant to the Coolant Recovery
Tank ..........................................................5-30
How to Add Coolant to the Radiator..................5-31
How to Add Fluid............................................5-23
How to Check Power Steering Fluid..................5-36
How to Check........................................5-21, 5-59
How to Inspect the Engine Air Cleaner/Filter.......5-18
How to Use This Manual...................................... ii
How to Wear Safety Belts Properly...................1-11
Hydroplaning..................................................4-19
I
If No Steam Is Coming From Your Engine..........5-27
If Steam Is Coming From Your Engine...............5-26
If the Light Is Flashing.....................................3-41
If the Light Is On Steady.................................3-42If You Are Stuck in Sand, Mud, Ice or Snow.......4-30
If You Do Decide To Pull A Trailer.....................4-36
If You're Caught in a Blizzard...........................4-28
Ignition Positions.............................................2-22
Ignition Transaxle Lock Check..........................6-20
Inadvertent Power Battery Saver.......................3-19
Infants and Young Children, Restraints...............1-29
In¯ation -- Tire Pressure..................................5-58
Inspection......................................................6-22
Brake System.............................................6-22
Engine Cooling System................................6-22
Exhaust System..........................................6-21
Fuel System...............................................6-22
Part C - Periodic Maintenance.......................6-21
Steering, Suspension and Front Drive Axle
Boot and Seal.........................................6-21
Throttle System...........................................6-22
Instrument Panel Brightness.............................3-17
Instrument Panel.............................................3-33
Cluster.......................................................3-33
Overview..................................................... 3-4
Interior Lamps................................................3-17
J
Jump Starting.................................................5-42
7

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

M
Maintenance, Normal Replacement Parts............5-94
Maintenance Schedule.....................................6-17
At Each Fuel Fill.........................................6-17
At Least Once a Month................................6-17
At Least Once a Year..................................6-18
At Least Twice a Year..................................6-18
Brake System Inspection..............................6-22
Engine Cooling System Inspection.................6-22
Exhaust System Inspection...........................6-21
Fuel System Inspection................................6-22
How This Section is Organized....................... 6-3
Introduction.................................................. 6-2
Long Trip/Highway Scheduled Maintenance.....6-13
Maintenance Requirements............................. 6-2
Part A - Scheduled Maintenance Services......... 6-4
Part B - Owner Checks and Services.............6-17
Part C - Periodic MaintenanceInspections......6-21
Part D - Recommended Fluids and
Lubricants...............................................6-23
Part E - Maintenance Record........................6-24
Selecting the Right Schedule.......................... 6-5
Short Trip/City Scheduled Maintenance............. 6-6
Steering, Suspension and Front Drive Axle
Boot and Seal Inspection..........................6-21
Throttle System Inspection............................6-22
Using Your................................................... 6-4
Your Vehicle and the Environment................... 6-2Maintenance When Trailer Towing.....................4-42
Making Turns.................................................4-40
Malfunction Indicator Light................................3-40
Manual Lumbar Controls.................................... 1-3
Manual Operation...........................................3-27
Manual Seats................................................... 1-2
Matching Transmitter(s) to Your Vehicle............... 2-8
Memory Mirrors..............................................2-44
Memory Seat.................................................2-44
Memory Seats................................................3-53
Message.......................................................3-49
DIC Warnings and Messages........................3-49
Mexico, Central America and Caribbean Islands/
Countries (Except Puerto Rico and U.S. Virgin
Islands) ± Customer Assistance....................... 7-5
Mirror Operation.....................................2-33, 2-34
Mirrors..........................................................2-33
Automatic Dimming Rearview with Compass....2-33
Automatic Dimming Rearview........................2-33
Manual Rearview Mirror................................2-33
Memory.....................................................2-44
Outside Automatic Dimming Heated Mirror......2-36
Outside Convex Mirror.................................2-36
Outside Curb View Assist Mirror....................2-36
Outside Power Mirrors..................................2-35
MyGMLink.com................................................ 7-3
9

N
New Vehicle Break-In......................................2-21
Normal Maintenance Replacement Parts............5-94
O
Odometer......................................................3-35
Off-Road Recovery..........................................4-13
Oil ................................................................5-13
Engine.......................................................5-13
Pressure Light.............................................3-43
Older Children, Restraints................................1-27
Online Owner Center........................................ 7-3
OnStar
žPersonal Calling.................................2-38
OnStaržServices............................................2-37
OnStaržSystem.............................................2-37
OnStaržVirtual Advisor....................................2-38
Other Warning Devices...................................... 3-6
Outlet Adjustment............................................3-30
Outside Curb View Assist Mirror........................3-54
Outside.........................................................2-36
Automatic Dimming Heated Mirror..................2-36
Convex Mirror.............................................2-36
Curb View Assist Mirror................................2-36
Power Mirrors.............................................2-35Overseas ± Customer Assistance........................ 7-5
Owners, Canadian............................................... ii
Owner's Information........................................7-11
P
Park(P).........................................................2-28
Shifting Into................................................2-28
Shifting Out of............................................2-30
Parking Brake and Automatic Transaxle Park (P)
Mechanism Check.......................................6-20
Parking on Hills..............................................4-41
Parking.........................................................2-27
Brake........................................................2-27
Over Things That Burn.................................2-31
Part A - Scheduled Maintenance Services............ 6-4
Part B - Owner Checks and Services................6-17
Part C - Periodic MaintenanceInspections..........6-21
Part D - Recommended Fluids and Lubricants....6-23
Part E - Maintenance Record...........................6-24
Passenger Temperature Control........................3-30
Passing.................................................4-13, 4-40
PASS-Key
žIII Operation..................................2-20
PASS-KeyžIII ................................................2-19
Perimeter Lighting...................................3-18, 3-53
Personal Choice Programming..........................2-11
Personal Choice Radio Controls........................3-77
10

Removing the Wheel Covers and Wheel
Nut Caps...................................................5-69
Replacement Bulbs.........................................5-56
Replacing Brake System Parts..........................5-40
Replacing Restraint System Parts
After a Crash..............................................1-55
Reporting Safety Defects.................................7-10
Canadian Government..................................7-10
General Motors...........................................7-10
United States Government.............................. 7-9
Reprogramming a Single HomeLink
žButton.......2-41
Resetting Defaults...........................................2-42
Restraint System Check...................................6-18
Checking Your Restraint Systems...................1-54
Replacing Restraint System Parts
After a Crash..........................................1-55
Restraint Systems...........................................1-54
Checking....................................................1-54
Replacing Parts...........................................1-55
Retained Accessory Power (RAP)......................2-23
Right Front Passenger Position, Safety Belts......1-19
Roadside......................................................... 7-6
Assistance Program....................................... 7-6
Rocking Your Vehicle To Get It Out...................4-31
Running Your Engine While You Are Parked.......2-32
S
Safety Belt.....................................................3-36
Reminder Light............................................3-36
Safety Belts...................................................5-80
Care of......................................................5-80
Center Front Passenger Position....................1-19
Driver Position............................................1-12
How to Wear Safety Belts Properly................1-11
Questions and Answers About Safety Belts.....1-11
Rear Safety Belt Comfort Guides for Children
and Small Adults......................................1-24
Rear Seat Passengers.................................1-21
Right Front Passenger Position......................1-19
Safety Belt Extender....................................1-26
Safety Belt Use During Pregnancy.................1-18
Safety Belts Are for Everyone......................... 1-6
Safety Chains.................................................4-39
Safety Warnings and Symbols.............................. iii
Seat............................................................... 1-6
Head Restraints............................................ 1-6
Seats.............................................................. 1-4
Heated Seats............................................... 1-4
Manual Lumbar............................................. 1-3
Manual........................................................ 1-2
12