
Underhood Fuse Block
Some fuses and relays are located in the underhood
fuse block on the passenger’s side of the vehicle in the
engine compartment. SeeEngine Compartment
Overview on page 5-10or more information on location.
Fuses Usage
1 Anti-Lock Brake System
2 Starter Solenoid
3Power Seats, Rear Window
Defogger Heated Seats
4High Blower, Hazard Flasher,
Stoplamps, Power Mirror, Door
Locks
5Ignition Switch, BTSI, Stoplamps,
Anti-Lock Brake System, Turn
Signals, Cluster, Air Bag, Daytime
Running Lamps Module
6 Cooling Fan
7Retained Accessory Power, Keyless
Entry, Data Link, Heating Ventilation
Air Conditioning Head, Cluster,
Radio, Auxiliary Power (Power
Drop), Cigarette Lighter
8Ignition Switch, Wipers, Radio,
Steering Wheel Controls, Body
Control Module, Auxiliary Power
(Power Drop), Power Windows,
Sunroof, Heating Ventilation Air
Conditioning Controls, Daytime
Running Lamps, Rear Window
Defogger Relay
5-90
2003 - Regal OM

Normal Maintenance Replacement Parts
Part Number
Engine Air Cleaner/FilterA1614C*
Engine Oil FilterType PF47*
Passenger Compartment Air Filter10406026
Spark Plugs
3800 V6Type 41–101*
Gap: 0.060 inches (1.52 mm)
3800 Supercharged V6Type 41–101*
Gap: 0.060 inches (1.52 mm)
Wiper Blade
Type
LengthShepherd’s Hook
22.0 inches (56.0 cm)
*ACDelco
®part number.
5-93
2003 - Regal OM

At Least Twice a Year
Restraint System Check
Make sure the safety belt reminder light and all your
belts, buckles, latch plates, retractors and anchorages
are working properly. Look for any other loose or
damaged safety belt system parts. If you see anything
that might keep a safety belt system from doing its
job, have it repaired. Have any torn or frayed safety belts
replaced.
Also look for any opened or broken air bag coverings,
and have them repaired or replaced. (The air bag
system does not need regular maintenance.)
Wiper Blade Check
Inspect wiper blades for wear or cracking. Replace
blade inserts that appear worn or damaged or that
streak or miss areas of the windshield. Also see
“Windshield Wiper and Wiper Blades”underCleaning
the Outside of Your Vehicle on page 5-80.
Weatherstrip Lubrication
Silicone grease on weatherstrips will make them last
longer, seal better, and not stick or squeak. Apply
silicone grease with a clean cloth. During very cold,
damp weather more frequent application may be
required. SeePart D: Recommended Fluids and
Lubricants on page 6-16.
Automatic Transaxle Check
Check the transaxle uid level; add if needed. See
Automatic Transaxle Fluid on page 5-20.A uid loss
may indicate a problem. Check the system and repair if
needed.
At Least Once a Year
Key Lock Cylinders Service
Lubricate the key lock cylinders with the lubricant
speci ed in Part D.
Body Lubrication Service
Lubricate all hinges and latches, including those for the
body doors, hood, secondary latch, pivots, spring
anchor, release pawl, rear compartment, glove box door,
console door and any folding seat hardware. Part D
tells you what to use. More frequent lubrication may be
required when exposed to a corrosive environment.
6-11
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

When to Change Engine Oil
(GM Oil Life System)...................................5-16
When to Check......................................5-18, 5-57
When to Check and Change............................5-20
When to Check Power Steering Fluid................5-37
When You Are Ready to Leave After Parking
on a Hill .....................................................4-41
Where to Put the Restraint...............................1-35
Why Safety Belts Work
..................................... 1-8
Window Lock-Out
............................................2-15
Windows
.......................................................2-14
Power
........................................................2-15
Windshield and Wiper Blades
...........................5-82Windshield Washer........................................... 3-8
Fluid..........................................................5-38
Windshield Washer Fluid Level Check................6-10
Windshield Wiper
Blade Replacement......................................5-55
Fuses........................................................5-86
Windshield Wipers............................................ 3-7
Winter Driving................................................4-26
Wiper Blade Check.........................................6-11
Y
Your Vehicle and the Environment....................... 6-2
16
2003 - Regal OM