
Seats and Restraint Systems........................... 1-1
Front Seats
............................................... 1-2
Safety Belts
.............................................. 1-6
Child Restraints
.......................................1-27
Air Bag Systems
......................................1-49
Restraint System Check
............................1-58
Features and Controls..................................... 2-1
Keys
........................................................ 2-3
Doors and Locks
......................................2-10
Windows
.................................................2-17
Theft-Deterrent Systems
............................2-19
Starting and Operating Your Vehicle
...........2-23
Mirrors
....................................................2-36
OnStar
®System
......................................2-41
HomeLink®Transmitter
.............................2-43
Storage Areas
.........................................2-47
Sunroof
..................................................2-50
Vehicle Personalization
.............................2-51
Instrument Panel............................................. 3-1
Instrument Panel Overview
.......................... 3-2
Climate Controls
......................................3-24
Warning Lights, Gages and Indicators
.........3-32
Driver Information Center (DIC)
..................3-47
Audio System(s)
.......................................3-57Driving Your Vehicle....................................... 4-1
Your Driving, the Road, and Your Vehicle
..... 4-2
Towing
...................................................4-31
Service and Appearance Care.......................... 5-1
Service
..................................................... 5-3
Fuel
......................................................... 5-4
Checking Things Under the Hood
...............5-10
Headlamp Aiming
.....................................5-49
Bulb Replacement
....................................5-51
Windshield Wiper Blade Replacement
.........5-61
Tires
......................................................5-62
Appearance Care
.....................................5-90
Vehicle Identi cation
.................................5-98
Electrical System
......................................5-98
Capacities and Speci cations
...................5-108
Normal Maintenance Replacement Parts
......5-109
Maintenance Schedule..................................... 6-1
Maintenance Schedule
................................ 6-2
Customer Assistance Information.................... 7-1
Customer Assistance Information
.................. 7-2
Reporting Safety Defects
...........................7-10
Index.................................................................1
2004 Buick Park Avenue Owner ManualM

How to Wear Safety Belts Properly
This part is only for people of adult size.
Be aware that there are special things to know about
safety belts and children. And there are different
rules for smaller children and babies. If a child will be
riding in your vehicle, seeOlder Children on page 1-27
orInfants and Young Children on page 1-30. Follow
those rules for everyone’s protection.
First, you’ll want to know which restraint systems your
vehicle has.
We’ll start with the driver position.
Driver Position
This part describes the driver’s restraint system.
Lap-Shoulder Belt
The driver has a lap-shoulder belt. Here’s how to wear it
properly.
1. Close and lock the door.
2. Adjust the seat so you can sit up straight. To see
how, see “Seats” in the Index.3. Pick up the latch plate and pull the belt across you.
Don’t let it get twisted.
The lap-shoulder belt may lock if you pull the belt
across you very quickly. If this happens, let the belt
go back slightly to unlock it. Then pull the belt
across you more slowly.
1-12

The best way to protect the fetus is to protect the
mother. When a safety belt is worn properly, it’s more
likely that the fetus won’t be hurt in a crash. For
pregnant women, as for anyone, the key to making
safety belts effective is wearing them properly.
Right Front Passenger Position
To learn how to wear the right front passenger’s safety
belt properly, seeDriver Position on page 1-12.
The right front passenger’s safety belt works the same
way as the driver’s safety belt – except for one thing.
If you ever pull the lap portion of the belt out all the way,
you will engage the child restraint locking feature.
If this happens, just let the belt go back all the way and
start again.
If your vehicle has a center passenger position,
be sure to use the correct buckle when buckling your
lap-shoulder belt. If you nd that the latch plate will not
go fully into the buckle, see if you are using the
buckle for the center passenger position.
Center Passenger Position
Lap Belt
If your vehicle has a front split seat and a rear bench
seat, someone can sit in the center positions.
1-19

5. Pull the rest of the shoulder belt all the way out of
the retractor to set the lock.6. To tighten the belt, feed the lap belt back into the
retractor while you push down on the child restraint.
You may nd it helpful to use your knee to push
down on the child restraint as you tighten the belt.
7. Push and pull the child restraint in different
directions to be sure it is secure.
To remove the child restraint, just unbuckle the vehicle’s
safety belt and let it go back all the way. The safety
belt will move freely again and be ready to work for an
adult or larger child passenger.
1-48

Doors and Locks
Door Locks
{CAUTION:
Unlocked doors can be dangerous.
Passengers — especially children — can
easily open the doors and fall out of a
moving vehicle. When a door is locked,
the handle will not open it. You increase
the chance of being thrown out of the
vehicle in a crash if the doors are not
locked. So, wear safety belts properly and
lock the doors whenever you drive.
Young children who get into unlocked
vehicles may be unable to get out. A child
can be overcome by extreme heat and can
suffer permanent injuries or even death
from heat stroke. Always lock your vehicle
whenever you leave it.
Outsiders can easily enter through an
unlocked door when you slow down or
stop your vehicle. Locking your doors can
help prevent this from happening.There are several ways to lock and unlock your vehicle.
To lock or unlock the driver’s door from the outside,
use your door key or remote keyless entry transmitter
(if equipped).
To lock or unlock the doors from the inside, move the
manual lock on the door handle forward or rearward.
2-10

Rear Door Security Locks
Your vehicle is equipped
with rear door security
locks that prevent
passengers from opening
the rear doors of your
vehicle from the inside.
To use one of these locks, do the following:
1. Open the rear door you want to lock.
2. Move the lever located on the inside door edge,
all the way to the lock symbol.
3. Close the door.
4. Do the same thing to the other rear door lock.
The rear doors of your vehicle cannot be opened from
the inside when this feature is in use.
To open a rear door when the security lock is on,
do the following:
1. Unlock the door.
2. Then open the door from the outside.If you don’t cancel the security lock feature, adults or
older children who ride in the rear seat won’t be able
to open the rear door from the inside. You should
let adults and older children know how these security
locks work, and how to cancel the locks.
To cancel the rear door lock, do the following:
1. Unlock and open the door from the outside.
2. Move the lever all the way to the unlock symbol.
3. Do the same for the other rear door.
The rear door locks will now work normally.
Lockout Protection
The power door locks will not work if the key is left in
the ignition and the driver’s door is open. You can
override this feature by holding the power door lock
switch on the driver’s door for more than three seconds.
Leaving Your Vehicle
If you are leaving the vehicle, take the keys, open the
door and set the locks from the inside, then get out and
close the door.
2-14

How to Check........................................5-23, 5-70
How to Check and Add Oil...............................5-20
How to Check Power Steering Fluid..................5-38
How to Inspect the Engine Air Cleaner/Filter.......5-21
How to Use This Manual...................................... ii
How to Wear Safety Belts Properly...................1-12
Hydroplaning..................................................4-20
I
If No Steam Is Coming From Your Engine..........5-29
If Steam Is Coming From Your Engine...............5-28
If the Light Is Flashing.....................................3-42
If the Light Is On Steady.................................3-42
If You Are Caught in a Blizzard.........................4-28
If You Are Stuck in Sand, Mud, Ice or Snow.......4-30
If You Can’t See The HUD Image When the
Ignition is On..............................................3-20
If You Do Decide To Pull A Trailer.....................4-39
Ignition Positions.............................................2-24
Ignition Transaxle Lock Check..........................6-22
Infants and Young Children, Restraints...............1-30
In ation - Tire Pressure...................................5-69
Inspection
Brake System.............................................6-24
Engine Cooling System................................6-24
Exhaust System..........................................6-23
Fuel System...............................................6-24
Part C - Periodic Maintenance.......................6-23Inspection (cont.)
Steering, Suspension and Front Drive Axle
Boot and Seal.........................................6-23
Throttle System...........................................6-24
Instrument Panel
Cluster.......................................................3-33
Overview..................................................... 3-2
Instrument Panel Brightness.............................3-15
Interior Lamps................................................3-15J
Jump Starting.................................................5-44
K
Key Lock Cylinders Service..............................6-20
Key Reminder Warning....................................2-25
Keyless Entry System....................................... 2-5
Keys............................................................... 2-3
L
Lamps
Exterior......................................................3-12
Interior.......................................................3-15
Lap Belt........................................................1-19
Lap-Shoulder Belt...................................1-12, 1-21
7

LATCH System
Child Restraints...........................................1-40
Securing a Child Restraint Designed for
the LATCH System...................................1-42
Leaving Your Vehicle.......................................2-14
Leaving Your Vehicle With the Engine
Running.....................................................2-32
Light
Air Bag Readiness.......................................3-36
Anti-Lock Brake System Warning...................3-39
Battery Warning..........................................3-37
Brake System Warning.................................3-38
Cruise Control.............................................3-45
Malfunction Indicator....................................3-41
Oil Pressure...............................................3-44
Safety Belt Reminder...................................3-36
Security.....................................................3-45
Service Vehicle Soon...................................3-45
TCS Warning Light......................................3-39
Traction Control System (TCS) Warning..........3-39
Lighted Visor Vanity Mirror...............................2-19
Loading Your Vehicle.......................................4-33
Lockout Protection..........................................2-14
Locks
Central Door Unlocking System.....................2-11
Delayed Locking..........................................2-11
Door..........................................................2-10
Leaving Your Vehicle....................................2-14
Lockout Protection.......................................2-14Locks (cont.)
Power Door................................................2-11
Programmable Automatic Door Locks.............2-12
Rear Door Security Locks.............................2-14
Long Trip/Highway De nition.............................. 6-6
Long Trip/Highway Intervals............................... 6-6
Long Trip/Highway Scheduled Maintenance........6-14
Loss of Control...............................................4-15
Lumbar
Power Controls............................................. 1-3
M
Magnetic Speed Variable Assist Steering............4-11
Main and Auxiliary Instrument Panel
Fuse Blocks................................................5-99
Main Instrument Panel Fuse Block...................5-100
Maintenance, Normal Replacement Parts..........5-109
Maintenance Schedule
At Each Fuel Fill.........................................6-19
At Least Once a Month................................6-19
At Least Once a Year..................................6-20
At Least Twice a Year..................................6-20
Brake System Inspection..............................6-24
Engine Cooling System Inspection.................6-24
Exhaust System Inspection...........................6-23
Fuel System Inspection................................6-24
How This Section is Organized....................... 6-3
Introduction.................................................. 6-2
8