brake BUICK CENTURY 2003 Repair Manual

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
7-11

A
Activating the Theft-Deterrent Feature................3-48
Adding Washer Fluid.......................................5-38
Additional Program Information........................... 7-9
Additives, Fuel................................................. 5-6
Add-On Electrical Equipment............................5-88
Adjusting the Speakers (Balance/Fade)......3-41, 3-44
Air Bag Systems.............................................1-53
How Does an Air Bag Restrain?....................1-59
Servicing Your Air Bag-Equipped Vehicle.........1-62
What Makes an Air Bag In¯ate?....................1-59
What Will You See After an Air Bag In¯ates?......1-60
When Should an Air Bag In¯ate?...................1-58
Where Are the Air Bags?..............................1-56
Air Bag .........................................................3-25
Readiness Light..........................................3-25
Air Cleaner/Filter, Engine.................................5-18
AM-FM Radio.................................................3-40
AM ...............................................................3-50
Antenna, Fixed Mast.......................................3-52
Anti-lock Brake System (ABS)............................ 4-7
Anti-Lock Brake, System Warning Light..............3-28
Appearance Care............................................5-79
Care of Safety Belts....................................5-82
Chemical Paint Spotting...............................5-85
Cleaning the Inside of Your Vehicle................5-79Appearance Care (cont.)
Cleaning the Outside of Your Vehicle..............5-82
Finish Damage............................................5-84
Sheet Metal Damage...................................5-84
Underbody Maintenance...............................5-85
Vehicle Care/Appearance Materials................5-85
Weatherstrips..............................................5-82
Ashtrays........................................................3-16
Audio System(s).............................................3-39
AM-FM Radio.............................................3-40
Audio Steering Wheel Controls......................3-50
Care of Your Cassette Tape Player................3-51
Care of Your CD Player...............................3-52
Care of Your CDs........................................3-52
Fixed Mast Antenna.....................................3-52
Radio with Cassette and CD.........................3-42
Setting the Time..........................................3-39
Theft-Deterrent Feature................................3-48
Understanding Radio Reception.....................3-50
Automatic Transaxle Check..............................6-11
Automatic Transaxle Shift Lock Control System
Check........................................................6-12
Automatic Transaxle........................................5-19
Fluid..........................................................5-19
Operation...................................................2-23
Auxiliary Power Connection (Power Drop)...........3-16
1

B
Backing Up....................................................4-39
Battery Replacement......................................... 2-8
Battery Rundown Protection.............................3-15
Battery..........................................................5-42
Before Leaving on a Long Trip.........................4-23
Body Lubrication Service..................................6-11
Brake Fluid....................................................5-39
Brake Wear...................................................5-41
Brake............................................................2-26
Parking......................................................2-26
System Inspection.......................................6-15
System Warning Light..................................3-27
Brakes..........................................................5-39
Braking in Emergencies..................................... 4-9
Braking........................................................... 4-6
Break-In, New Vehicle.....................................2-19
Bulb Replacement...........................................5-51
Back-Up Lamps...........................................5-55
Center High-Mounted Stoplamp (CHMSL)........5-53
Front Turn Signal and Parking Lamps.............5-52
Halogen Bulbs............................................5-51
Headlamp Aiming........................................5-49
Headlamps.................................................5-51
Replacement Bulbs......................................5-55
Taillamps, Turn Signal, and Stoplamps............5-54
Buying New Tires...........................................5-62
C
California Fuel.................................................. 5-6
Canada ± Customer Assistance.......................... 7-5
Canadian Owners................................................ ii
Canadian Roadside Assistance........................... 7-7
Capacities and Speci®cations............................5-94
Carbon Monoxide...................4-26, 4-35, 2-13, 2-30
Care of.........................................................5-82
Safety Belts................................................5-82
Your Cassette Tape Player............................3-51
Your CD Player...........................................3-52
Your CDs ...................................................3-52
Cassette Tape Messages.................................3-45
Cassette Tape Player Service...........................6-10
Center High-Mounted Stoplamp (CHMSL)...........5-53
Center Passenger Position, Safety Belts.............1-22
Chains, Tires..................................................5-66
Charging System Light....................................3-26
Checking Coolant............................................5-24
Checking Engine Oil........................................5-13
Checking Things Under the Hood......................5-10
Checking Your Restraint Systems......................1-63
Check...........................................................3-31
Engine Light...............................................3-31
Chemical Paint Spotting...................................5-85
Child Restraints..............................................1-36
Child Restraint Systems...............................1-36
2

How to Check Power Steering Fluid..................5-37
How to Check........................................5-20, 5-58
How to Use This Manual...................................... ii
How to Wear Safety Belts Properly...................1-12
Hydroplaning..................................................4-19
I
If No Steam Is Coming From Your Engine..........5-28
If Steam Is Coming From Your Engine...............5-27
If the Light Is Flashing.....................................3-32
If the Light Is On Steady.................................3-32
If You Are Stuck in Sand, Mud, Ice or Snow.......4-31
If You Do Decide To Pull A Trailer.....................4-36
If You're Caught in a Blizzard...........................4-29
Ignition Positions.............................................2-19
Ignition Transaxle Lock Check..........................6-13
Illumination on Remote Activation........................ 2-8
Infants and Young Children, Restraints...............1-32
In¯ation Ð Tire Pressure.................................5-57
Inspection......................................................6-15
Brake System.............................................6-15
Engine Cooling System................................6-14
Exhaust System..........................................6-14
Fuel System...............................................6-14
Part C - Periodic Maintenance.......................6-14
Steering, Suspension and Front Drive Axle
Boot and Seal.........................................6-14
Throttle System...........................................6-15Inspection (cont.)
Instrument Panel Brightness.............................3-14
Instrument Panel Fuse Block............................5-89
Instrument Panel.............................................3-23
Cluster.......................................................3-23
Overview..................................................... 3-2
Interior Lamps................................................3-14J
Jump Starting.................................................5-43
K
Key Lock Cylinders Service..............................6-11
Keyless Entry System....................................... 2-4
Keys............................................................... 2-2
L
Lamps...........................................................3-11
Exterior......................................................3-11
Interior.......................................................3-14
Lap Belt........................................................1-22
Lap-Shoulder Belt...................................1-13, 1-24
LATCH System...............................................1-42
Child Restraints...........................................1-42
7

LATCH System (cont.)
Securing a Child Restraint Designed for the
LATCH System........................................1-45
Leaving Your Vehicle With the Engine Running . . . 2-28
Leaving Your Vehicle.......................................2-12
Lighted Visor Vanity Mirrors..............................2-16
Light.............................................................3-25
Air Bag Readiness.......................................3-25
Anti-Lock Brake System Warning...................3-28
Brake System Warning.................................3-27
Change Engine Oil......................................3-35
Charging System.........................................3-26
Cruise Control.............................................3-36
Door/Trunk Ajar Warning...............................3-36
Engine Coolant Temperature Warning.............3-29
Enhanced Traction System (ETS) Warning
Light......................................................3-28
Low Fuel Warning.......................................3-38
Low Oil Level.............................................3-35
Low Traction...............................................3-29
Low Washer Fluid Warning...........................3-36
Malfunction Indicator....................................3-31
Oil Pressure...............................................3-34
Safety Belt Reminder...................................3-24
Security.....................................................3-36
Service Vehicle Soon...................................3-37
Tire Pressure..............................................3-30
Loading Your Vehicle.......................................4-33
Lockout Protection..........................................2-12
Locks............................................................2-10Door..........................................................2-10
Leaving Your Vehicle....................................2-12
Lockout Protection.......................................2-12
Power Door................................................2-11
Programmable Automatic Door Locks.............2-11
Loss of Control...............................................4-15
Low Fuel Warning Light...................................3-38
Low Traction Light..........................................3-29
Low Washer Fluid Warning Light.......................3-36
M
Maintenance, Normal Replacement Parts............5-95
Maintenance Schedule.....................................6-10
At Each Fuel Fill.........................................6-10
At Least Once a Month................................6-10
At Least Once a Year..................................6-11
At Least Twice a Year..................................6-11
Brake System Inspection..............................6-15
Engine Cooling System Inspection.................6-14
Exhaust System Inspection...........................6-14
Fuel System Inspection................................6-14
How This Section is Organized....................... 6-3
Introduction.................................................. 6-2
Maintenance Requirements............................. 6-2
Part A - Scheduled Maintenance Services......... 6-4
Part B - Owner Checks and Services.............6-10
Part C - Periodic MaintenanceInspections......6-14
Part D - Recommended Fluids and Lubricants . . . 6-16
8

Other Warning Devices...................................... 3-4
Outlet Adjustment............................................3-20
Outside.........................................................2-33
Convex Mirror.............................................2-33
Power Mirrors.............................................2-33
Overheated Engine Protection Operating Mode . . . 5-26
Overseas ± Customer Assistance........................ 7-5
Owners, Canadian............................................... ii
Owner's Information........................................7-12
P
Park (P)........................................................2-29
Shifting Out of............................................2-29
Parking Brake and Automatic Transaxle Park (P)
Mechanism Check.......................................6-13
Parking on Hills..............................................4-40
Parking.........................................................2-26
Brake........................................................2-26
Over Things That Burn.................................2-29
Park(P).........................................................2-26
Shifting Into................................................2-26Part A - Scheduled Maintenance Services............ 6-4
Part B - Owner Checks and Services................6-10
Part C - Periodic MaintenanceInspections..........6-14
Part D - Recommended Fluids and Lubricants....6-16
Part E - Maintenance Record...........................6-17
Passenger Compartment Air Filter.....................3-20
Passing.................................................4-14, 4-39
PASS-Key
žII .................................................2-17
Plan Ahead When Possible................................ 7-8
Playing a Cassette Tape..................................3-44
Playing a Compact Disc...................................3-46
Playing the Radio...................................3-40, 3-42
Power Steering...............................................4-11
Power...........................................................3-16
Auxiliary Connection.....................................3-16
Door Locks.................................................2-11
Drop..........................................................3-16
Electrical System.........................................5-88
Six-Way Seats.............................................. 1-3
Steering Fluid.............................................5-36
Windows....................................................2-16
Programmable Automatic Door Locks.................2-11
10

Q
Questions and Answers About Safety Belts.........1-11
R
Radiator Pressure Cap....................................5-26
Radios..........................................................3-39
AM-FM Radio.............................................3-40
Care of Your Cassette Tape Player................3-51
Care of Your CD Player...............................3-52
Care of Your CDs........................................3-52
Radio with Cassette and CD.........................3-42
Setting the Time..........................................3-39
Theft-Deterrent............................................3-48
Understanding Reception..............................3-50
Reading Lamps..............................................3-15
Rear Safety Belt Comfort Guides......................1-27
Rear Seat Outside Passenger Positions.............1-24
Rear Seat Passengers, Safety Belts..................1-24
Rear Window Defogger....................................3-19
Rearview Mirror with OnStar
ž...........................2-32
Rearview Mirrors.............................................2-32
Reclining Seatbacks.......................................... 1-3
Recreational Vehicle Towing.............................4-32
Remote Keyless Entry System, Operation............ 2-5
Remote Keyless Entry System............................ 2-4Remote Trunk Release....................................2-13
Removing the Flat Tire and Installing
the Spare Tire.............................................5-71
Removing the Spare Tire and Tools...................5-68
Removing the Wheel Center Caps....................5-70
Removing the Wheel Covers............................5-70
Replacement Bulbs.........................................5-55
Replacing Brake System Parts..........................5-42
Replacing Restraint System Parts After a Crash.....1-63
Reporting Safety Defects.................................7-10
Canadian Government..................................7-10
General Motors...........................................7-11
United States Government............................7-10
Restraint System Check...................................6-11
Checking Your Restraint Systems...................1-63
Replacing Restraint System Parts After
a Crash..................................................1-63
Restraint Systems...........................................1-63
Checking....................................................1-63
Replacing Parts...........................................1-63
Resynchronization............................................. 2-9
Retained Accessory Power (RAP)......................2-20
Right Front Passenger Position, Safety Belts......1-21
Roadside......................................................... 7-6
Assistance Program....................................... 7-6
Rocking Your Vehicle To Get It Out...................4-31
Running Your Engine While You Are Parked.......2-31
11

Tires (cont.)
Wheel Replacement.....................................5-64
When It Is Time for New Tires......................5-61
To Use the Engine Coolant Heater....................2-22
Top Strap Anchor Location...............................1-42
Top Strap......................................................1-40
Torque Lock...................................................2-28
Total Weight on Your Vehicle's Tires..................4-38
Towing..........................................................4-32
Recreational Vehicle.....................................4-32
Towing a Trailer..........................................4-35
Your Vehicle...............................................4-32
Traction.........................................................3-28
Enhanced Traction System (ETS) Warning
Light......................................................3-28
Enhanced Traction System (ETS)...................4-10
Low Light...................................................3-29
Trailer Brakes.................................................4-38
Transaxle Operation, Automatic.........................2-23
Transaxle.......................................................5-19
Fluid, Automatic...........................................5-19
Transmission, Transaxle, Transfer Case Unit
Repair Manual............................................7-11Transportation Options...................................... 7-8
Trip Odometer................................................3-24
Trunk Assist Handle........................................2-14
Trunk Lock....................................................2-13
Trunk............................................................2-13
Turn and Lane-Change Signals.......................... 3-6
Turn Signal/Multifunction Lever........................... 3-5
Turn Signals When Towing a Trailer..................4-40
U
Underbody Flushing Service.............................6-13
Underhood Fuse Block....................................5-91
Understanding Radio Reception........................3-50
Uniform Tire Quality Grading............................5-63
United States ± Customer Assistance.................. 7-5
Unlocking the Theft-Deterrent Feature After a
Power Loss................................................3-49
Used Replacement Wheels..............................5-65
Using Cleaner on Fabric..................................5-80
14