check engine BUICK REGAL 2004 Service Manual

Engine Coolant Level Check
Check the engine coolant level and add
DEX-COOL®coolant mixture if necessary. SeeEngine
Coolant on page 5-26for 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 tires and make sure tires are
inated to the correct pressures. Do not forget to check
your spare tire. SeeTires on page 5-61for further
details.
Cassette Tape Player Service
Clean cassette tape player. Cleaning should be done
every 50 hours of tape play. SeeAudio System(s)
on page 3-44for further details.
At Least Once a Year
Starter Switch Check
{CAUTION:
When you are doing this inspection, the
vehicle could move suddenly. If the vehicle
moves, you or others could be injured.
1. Before you start, be sure you have enough room
around the vehicle.
2. Firmly apply both the parking brake and the regular
brake. SeeParking Brake on page 2-24if
necessary.
Do not use the accelerator pedal, and be ready to
turn off the engine immediately if it starts.
3. Try to start the engine in each gear. The starter
should work only in PARK (P) or NEUTRAL (N).
If the starter works in any other position, contact
your GM Goodwrench dealer for service.
6-9

Automatic Transaxle Shift Lock Control
System Check
{CAUTION:
When you are doing this inspection, the
vehicle could move suddenly. If the vehicle
moves, you or others could be injured.
1. Before you start, be sure you have enough room
around the vehicle. It should be parked on a level
surface.
2. Firmly apply the parking brake. SeeParking Brake
on page 2-24if necessary.
Be ready to apply the regular brake immediately if
the vehicle begins to move.
3. With the engine off, turn the key to the RUN
position, but don’t start the engine. Without applying
the regular brake, try to move the shift lever out
of PARK (P) with normal effort. If the shift lever
moves out of PARK (P), contact your GM
Goodwrench dealer for service.
Ignition Transaxle Lock Check
While parked, and with the parking brake set, try to turn
the ignition key to LOCK in each shift lever position.
The key should turn to LOCK only when the
shift lever is in PARK (P).
The key should come out only in LOCK.
Contact your GM Goodwrench dealer if service is
required.
6-10

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.
Contact your GM Goodwrench dealer if service is
required.
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.
6-11

B
Backglass Antenna..........................................3-64
Backing Up....................................................4-43
Battery..........................................................5-46
Battery Replacement......................................... 2-8
Battery Rundown Protection.............................3-16
Before Leaving on a Long Trip.........................4-23
Brake
Parking......................................................2-24
System Warning Light..................................3-31
Brake Fluid....................................................5-43
Brake Wear...................................................5-45
Brakes..........................................................5-43
Braking........................................................... 4-6
Braking in Emergencies..................................... 4-8
Break-In, New Vehicle.....................................2-17
Bulb Replacement...........................................5-55
Back-Up Lamps...........................................5-59
Center High-Mounted Stoplamp (CHMSL)........5-57
Front Turn Signal and Parking Lamps.............5-56
Halogen Bulbs............................................5-55
Headlamp Aiming........................................5-53
Headlamps.................................................5-55
Replacement Bulbs......................................5-59
Taillamps, Turn Signal, and Stoplamps............5-58
Buying New Tires...........................................5-72
C
California Fuel.................................................. 5-5
Canada – Customer Assistance.......................... 7-4
Canadian Owners................................................ ii
Canadian Roadside Assistance........................... 7-7
Capacities and Specications..........................5-103
Carbon Monoxide...................4-26, 4-39, 2-12, 2-29
Care of
Safety Belts................................................5-92
Your Cassette Tape Player............................3-63
Your CD Player...........................................3-64
Your CDs ...................................................3-64
Cassette Tape Messages.................................3-58
Cassette Tape Player Service............................. 6-9
CD Adapter Kits.............................................3-59
CD Messages........................................3-52, 3-61
Center Console Storage Area...........................2-35
Center High-Mounted Stoplamp (CHMSL)...........5-57
Center Passenger Position, Safety Belts.............1-20
Chains, Tires..................................................5-76
Charging System Light....................................3-31
Check
Engine Light...............................................3-35
Checking Coolant............................................5-27
Checking Engine Oil........................................5-16
Checking Things Under the Hood......................5-10
2

Checking Your Restraint Systems......................1-54
Chemical Paint Spotting...................................5-95
Child Restraints
Child Restraint Systems...............................1-32
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 Center
Rear Seat Position...................................1-42
Securing a Child Restraint in a Rear
Outside Seat Position...............................1-40
Securing a Child Restraint in the Right
Front Seat Position...................................1-44
Top Strap...................................................1-36
Top Strap Anchor Location............................1-37
Where to Put the Restraint...........................1-35
Cigarette Lighter.............................................3-17
Cleaning
Inside of Your Vehicle..................................5-90
Outside of Your Vehicle................................5-93
Underbody Maintenance...............................5-95
Weatherstrips..............................................5-92
Cleaning Aluminum or Chrome-Plated Wheels.....5-94
Cleaning Exterior Lamps/Lenses.......................5-93Cleaning Fabric/Carpet....................................5-90
Cleaning Glass Surfaces..................................5-92
Cleaning Interior Plastic Components.................5-92
Cleaning Leather............................................5-91
Cleaning the Top of the Instrument Panel...........5-92
Cleaning Tires................................................5-95
Cleaning Vinyl................................................5-91
Cleaning Windshield and Wiper Blades..............5-94
Climate Control System
Air Filter, Passenger Compartment.................3-25
Dual..........................................................3-17
Dual Automatic............................................3-20
Outlet Adjustment........................................3-24
Compact Spare Tire........................................5-89
Control Buttons...............................................3-43
Control of a Vehicle.......................................... 4-5
Convenience Net............................................2-36
Coolant
Engine Temperature Gage............................3-34
Engine Temperature Warning Light.................3-34
Heater, Engine............................................2-20
Cooling System..............................................5-32
Cornering Lamps............................................3-13
Courtesy Lamps.............................................3-14
Cruise Control.................................................. 3-8
Cruise Control Light........................................3-40
Current and Past Model Order Forms................7-12
3

E
Electrical System
Add-On Equipment......................................5-97
Fuses and Circuit Breakers...........................5-98
Headlamp Wiring.........................................5-98
Power Windows and Other Power Options......5-98
Windshield Wiper Fuses...............................5-98
Emergency Trunk Release Handle.....................2-13
Emissions Inspection and Maintenance
Programs...................................................3-37
Engine
Air Cleaner/Filter.........................................5-22
Battery.......................................................5-46
Change Engine Oil Light...............................3-39
Check and Service Engine Soon Light............3-35
Coolant......................................................5-26
Coolant Heater............................................2-20
Coolant Temperature Gage...........................3-34
Coolant Temperature Warning Light................3-34
Drive Belt Routing.......................................6-14
Engine Compartment Overview......................5-12
Exhaust.....................................................2-29
Oil .............................................................5-16
Overheating................................................5-29
Starting......................................................2-19
Supercharger Oil.........................................5-21Engine Cooling When Trailer Towing..................4-45
Engine Oil Additives........................................5-19
Entry Lighting.................................................3-14
Event Data Records (EDR)................................ 7-9
Express-Down Window....................................2-15
Extender, Safety Belt.......................................1-26
Exterior Lamps...............................................3-11
F
Filter
Engine Air Cleaner......................................5-22
Finding a Program Type (PTY) Station.......3-48, 3-55
Finding a Station....................................3-46, 3-53
Finish Care....................................................5-93
Finish Damage...............................................5-95
Flash-to-Pass................................................... 3-7
Flat Tire........................................................5-77
Flat Tire, Changing.........................................5-78
Fluid
Automatic Transaxle.....................................5-24
Power Steering...........................................5-40
Windshield Washer......................................5-42
FM ...............................................................3-62
Fog Lamps....................................................3-13
5

Folding Rear Seat............................................ 1-6
Following Distance..........................................4-43
Fuel............................................................... 5-4
Additives...................................................... 5-6
California Fuel.............................................. 5-5
Filling a Portable Fuel Container..................... 5-9
Filling Your Tank........................................... 5-7
Fuels in Foreign Countries.............................. 5-6
Gage.........................................................3-41
Gasoline Octane........................................... 5-4
Gasoline Specications.................................. 5-5
Low Warning Light.......................................3-42
Full-Range Traction Control System..................... 4-9
Fuses
Fuses and Circuit Breakers...........................5-98
Windshield Wiper.........................................5-98
G
Gage
Engine Coolant Temperature.........................3-34
Fuel..........................................................3-41
Speedometer..............................................3-28
Tachometer.................................................3-29
Gasoline
Octane........................................................ 5-4
Specications............................................... 5-5Glove Box.....................................................2-35
GM Mobility Program for Persons
with Disabilities............................................. 7-5
H
Hazard Warning Flashers................................... 3-4
Head Restraints............................................... 1-5
Headlamp
Aiming.......................................................5-53
Headlamp High/Low-Beam Changer.................... 3-6
Headlamp Wiring............................................5-98
Headlamps....................................................5-55
Bulb Replacement.......................................5-55
Front Turn Signal and Parking Lamps.............5-56
Halogen Bulbs............................................5-55
Heated Seats................................................... 1-3
Highway Hypnosis...........................................4-24
Hill and Mountain Roads..................................4-24
Hitches..........................................................4-42
Hood
Checking Things Under................................5-10
Release.....................................................5-11
Horn............................................................... 3-5
How to Add Coolant to the Coolant
Recovery Tank............................................5-34
How to Add Coolant to the Radiator..................5-35
6

How to Add Fluid............................................5-26
How to Check........................................5-24, 5-69
How to Check and Add Oil...............................5-22
How to Check Power Steering Fluid..................5-41
How to Use This Manual...................................... ii
How to Wear Safety Belts Properly...................1-11
Hydroplaning..................................................4-20
I
If No Steam Is Coming From Your Engine..........5-31
If Steam Is Coming From Your Engine...............5-30
If the Light Is Flashing.....................................3-36
If the Light Is On Steady.................................3-37
If You Are Caught in a Blizzard.........................4-28
If You Are Stuck in Sand, Mud, Ice or Snow.......4-30
If You Do Decide To Pull A Trailer.....................4-40
Ignition Positions.............................................2-18
Illumination on Remote Activation........................ 2-7
Infants and Young Children, Restraints...............1-29
Ination - Tire Pressure...................................5-68
Instrument Panel
Cluster.......................................................3-27
Overview..................................................... 3-2
Instrument Panel Brightness.............................3-14
Instrument Panel Fuse Block............................5-98
Interior Lamps................................................3-14
J
Jump Starting.................................................5-47
K
Keyless Entry System....................................... 2-3
Keys............................................................... 2-2
L
Lamps
Exterior......................................................3-11
Interior.......................................................3-14
Lap Belt........................................................1-20
Lap-Shoulder Belt...................................1-12, 1-22
LATCH System
Child Restraints...........................................1-38
Securing a Child Restraint Designed
for the LATCH System..............................1-40
Leaving Your Vehicle.......................................2-11
Leaving Your Vehicle With the Engine
Running.....................................................2-26
Light
Air Bag Readiness.......................................3-30
Anti-Lock Brake System Warning...................3-32
7

Light (cont.)
Brake System Warning.................................3-31
Change Engine Oil......................................3-39
Charging System.........................................3-31
Cruise Control.............................................3-40
Door/Trunk Ajar Warning...............................3-40
Engine Coolant Temperature Warning.............3-34
Low Fuel Warning.......................................3-42
Low Oil Level.............................................3-39
Low Traction...............................................3-33
Low Washer Fluid Warning...........................3-40
Malfunction Indicator....................................3-35
Oil Pressure...............................................3-38
Safety Belt Reminder...................................3-29
Security.....................................................3-40
Service Vehicle Soon...................................3-41
TCS Warning Light......................................3-33
Tire Pressure..............................................3-35
Traction Control System (TCS) Warning..........3-33
Lighted Visor Vanity Mirrors..............................2-15
Loading Your Vehicle.......................................4-33
Lockout Protection..........................................2-11
Locks
Door........................................................... 2-9
Leaving Your Vehicle....................................2-11
Lockout Protection.......................................2-11
Power Door................................................2-10
Programmable Automatic Door Locks.............2-10Loss of Control...............................................4-15
Low Fuel Warning Light...................................3-42
Low Traction Light..........................................3-33
Low Washer Fluid Warning Light.......................3-40
M
Maintenance Schedule
Additional Required Services........................... 6-6
At Each Fuel Fill........................................... 6-8
At Least Once a Month.................................. 6-9
At Least Once a Year.................................... 6-9
Introduction.................................................. 6-2
Maintenance Footnotes.................................. 6-7
Maintenance Record....................................6-15
Maintenance Requirements............................. 6-2
Normal Maintenance Replacement Parts.........6-13
Owner Checks and Services........................... 6-8
Recommended Fluids and Lubricants.............6-12
Scheduled Maintenance................................. 6-4
Using Your................................................... 6-3
Your Vehicle and the Environment................... 6-2
Maintenance When Trailer Towing.....................4-45
Making Turns.................................................4-43
Malfunction Indicator Light................................3-35
Manual Operation...................................3-17, 3-21
Manual Seats................................................... 1-2
8

Matching Transmitter(s) to Your Vehicle............... 2-7
Mexico, Central America and Caribbean
Islands/Countries (Except Puerto Rico and
U.S. Virgin Islands) – Customer Assistance....... 7-5
Mirrors
Automatic Dimming Rearview........................2-32
Automatic Dimming Rearview with OnStar
®.....2-32
Manual Rearview Mirror................................2-31
Manual Rearview Mirror with OnStar
®.............2-31
Outside Convex Mirror.................................2-33
Outside Power Foldaway Mirrors....................2-33
Modes...........................................................3-44
MyGMLink.com................................................ 7-3
N
New Vehicle Break-In......................................2-17
Normal Maintenance Replacement Parts............6-13
O
Odometer......................................................3-28
Off-Road Recovery..........................................4-14
Oil
Change Engine Oil Light...............................3-39
Engine.......................................................5-16
Low Oil Level Light......................................3-39Oil (cont.)
Pressure Light.............................................3-38
Supercharger, Engine...................................5-21
Older Children, Restraints................................1-27
Online Owner Center........................................ 7-3
OnStar
®Personal Calling.................................2-35
OnStar®Services............................................2-34
OnStar®System.............................................2-34
OnStar®Virtual Advisor....................................2-35
Operation Tips................................................3-25
Other Warning Devices...................................... 3-4
Outlet Adjustment............................................3-24
Outside
Convex Mirror.............................................2-33
Power Foldaway Mirrors...............................2-33
Overheated Engine Protection
Operating Mode..........................................5-29
Overseas – Customer Assistance........................ 7-5
Owner Checks and Services.............................. 6-8
Owners, Canadian............................................... ii
Owner’s Information........................................7-12
P
Park (P)
Shifting Into................................................2-27
Shifting Out of............................................2-27
9