2003 BUICK REGAL coolant temperature

100,000 Miles (166 000 km)
❑Inspect spark plug wires.An Emission Control
Service.
❑Replace spark plugs.An Emission Control Service.
❑Change automatic transaxleuid andlter if the
vehicle is mainly driven under one or more of
these conditions:
In heavy city traffic where the outside
temperature regularly reaches 90°F (32°C) or
higher.
In hilly or mountainous terrain.
When doing frequent trailer towing.
Uses such as found in taxi, police or delivery
service.
❑If you haven’t used your vehicle under severe service
conditions listed previously and, therefore, haven’t
changed your automatic transaxleuid, change both
theuid andlter.
150,000 Miles (240 000 km)
❑Drain,ush and rell cooling system (or every
60 months since last service, whichever occursrst).
SeeEngine Coolant on page 5-22for what to use.
Inspect hoses. Clean radiator, condenser, pressure
cap and neck. Pressure test the cooling system
and pressure cap.An Emission Control Service.
❑Inspect engine accessory drive belt.An Emission
Control Service.
6-9
2003 - Regal OM

Center High-Mounted Stoplamp (CHMSL)...........5-52
Center Passenger Position, Safety Belts.............1-20
Chains, Tires..................................................5-65
Charging System Light....................................3-31
Check
Engine Light...............................................3-35
Checking Coolant............................................5-23
Checking Engine Oil........................................5-13
Checking Things Under the Hood....................... 5-8
Checking Your Restraint Systems......................1-54
Chemical Paint Spotting...................................5-83
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...........................1-35Cigarette Lighter
.............................................3-17
Cleaning
Inside of Your Vehicle
..................................5-78
Outside of Your Vehicle
................................5-80
Underbody Maintenance
...............................5-83
Weatherstrips
..............................................5-80
Cleaning Exterior Lamps/Lenses
.......................5-81
Climate Control System
Air Filter, Passenger Compartment
.................3-24
Dual
..........................................................3-17
Dual Automatic
............................................3-20
Outlet Adjustment
........................................3-24
Compact Disc Messages
..................................3-54
Compact Spare Tire
........................................5-77
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
..............................................5-28
Cornering Lamps
............................................3-13
Courtesy Lamps
.............................................3-13
Cruise Control
.................................................. 3-8
Cruise Control Light
........................................3-40
3
2003 - Regal OM

E
Electrical System
Add-On Equipment......................................5-86
Fuses and Circuit Breakers...........................5-87
Headlamp Wiring.........................................5-86
Power Windows and Other Power Options......5-86
Windshield Wiper Fuses...............................5-86
Emergency Trunk Release Handle.....................2-13
Emissions Inspection and Maintenance
Programs...................................................3-37
Engine
Air Cleaner/Filter.........................................5-18
Battery.......................................................5-42
Change Engine Oil Light...............................3-39
Check and Service Engine Soon Light............3-35
Compartment Overview................................5-10
Coolant......................................................5-22
Coolant Heater............................................2-20
Coolant Temperature Gage...........................3-34
Coolant Temperature Warning Light................3-34
Cooling System Inspection............................6-15
Exhaust
.....................................................2-29
Oil
.............................................................5-13
Overheating
................................................5-25
Starting
......................................................2-19
Supercharger Oil
.........................................5-18
Engine Coolant Level Check
.............................6-10Engine Cooling When Trailer Towing..................4-41
Engine Oil Additives........................................5-16
Engine Oil Level Check...................................6-10
Entry Lighting.................................................3-13
Express-Down Window....................................2-15
Extender, Safety Belt.......................................1-26
Exterior Lamps...............................................3-10
F
Fabric/Carpet.................................................5-78
Filter
Engine Air Cleaner......................................5-18
Finding a Station....................................3-46, 3-50
Finish Care....................................................5-81
Finish Damage...............................................5-83
Flash-to-Pass................................................... 3-7
Flat Tire........................................................5-66
Flat Tire, Changing.........................................5-66
Fluid
Automatic Transaxle.....................................5-20
Power Steering...........................................5-36
Windshield Washer......................................5-38
FM ...............................................................3-57
Fog Lamps ....................................................3-13
Folding Rear Seat............................................ 1-6
Following Distance..........................................4-39
Footnotes........................................................ 6-5
5
2003 - Regal OM

Fuel............................................................... 5-4
Additives...................................................... 5-5
California Fuel.............................................. 5-5
Filling a Portable Fuel Container..................... 5-8
Filling Your Tank........................................... 5-6
Fuels in Foreign Countries.............................. 5-6
Gage .........................................................3-41
Gasoline Octane........................................... 5-4
Gasoline Specifications.................................. 5-5
Low Warning Light.......................................3-42
System Inspection.......................................6-15
Full-Range Traction Control System..................... 4-9
Fuses
Fuses and Circuit Breakers...........................5-87
Windshield Wiper.........................................5-86
G
Gage
Engine Coolant Temperature.........................3-34
Fuel..........................................................3-41
Speedometer..............................................3-28
Tachometer.................................................3-29
Gasoline
Octane........................................................ 5-4
Specifications............................................... 5-5Glass Surfaces...............................................5-80
Glove Box.....................................................2-35
GM Mobility Program for Persons with
Disabilities.................................................... 7-5
H
Hazard Warning Flashers................................... 3-4
Head Restraints............................................... 1-5
Headlamp
Aiming .......................................................5-48
Headlamp High/Low-Beam Changer.................... 3-6
Headlamp Wiring
............................................5-86
Headlamps
....................................................5-51
Bulb Replacement
.......................................5-50
Front Turn Signal and Parking Lamps
.............5-52
Halogen Bulbs
............................................5-50
Heated Seats
................................................... 1-3
Highway Hypnosis
...........................................4-24
Hill and Mountain Roads
..................................4-24
Hitches
..........................................................4-38
Hood
Checking Things Under
.................................. 5-8
Release
....................................................... 5-9
Horn
............................................................... 3-5
6
2003 - Regal OM

L
Lamps
Exterior......................................................3-10
Interior.......................................................3-13
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
Leather.........................................................5-79
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
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.............................................3-39Light (cont.)
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
.............2-10
Loss of Control
...............................................4-15
Low Fuel Warning Light
...................................3-42
Low Traction Light
..........................................3-33
Low Washer Fluid Warning Light
.......................3-40
8
2003 - Regal OM