2004 PONTIAC GRAND PRIX electrical system

Seats and Restraint Systems........................... 1-1
Front Seats
............................................... 1-2
Rear Seats
............................................... 1-8
Safety Belts
.............................................1-10
Child Restraints
.......................................1-29
Air Bag Systems
......................................1-48
Restraint System Check
............................1-56
Features and Controls..................................... 2-1
Keys
........................................................ 2-2
Doors and Locks
....................................... 2-7
Windows
.................................................2-12
Theft-Deterrent Systems
............................2-14
Starting and Operating Your Vehicle
...........2-18
Mirrors
....................................................2-33
OnStar
žSystem
......................................2-35
Storage Areas
.........................................2-36
Sunroof
..................................................2-39
Instrument Panel............................................. 3-1
Instrument Panel Overview
.......................... 3-2
Climate Controls
......................................3-25
Warning Lights, Gages and Indicators
.........3-31
Driver Information Center (DIC)
..................3-45
Audio System(s)
.......................................3-88Driving Your Vehicle....................................... 4-1
Your Driving, the Road, and Your Vehicle
..... 4-2
Towing
...................................................4-33
Service and Appearance Care.......................... 5-1
Service
..................................................... 5-3
Fuel
......................................................... 5-4
Checking Things Under the Hood
...............5-10
Headlamp Aiming
.....................................5-56
Bulb Replacement
....................................5-59
Windshield Wiper Blade Replacement
.........5-67
Tires
......................................................5-68
Appearance Care
.....................................5-90
Vehicle Identi®cation
.................................5-98
Electrical System
......................................5-99
Capacities and Speci®cations
...................5-104
Normal Maintenance Replacement Parts
......5-105
Maintenance Schedule..................................... 6-1
Maintenance Schedule
................................ 6-2
Customer Assistance Information.................... 7-1
Customer Assistance Information
.................. 7-2
Reporting Safety Defects
............................ 7-9
Index................................................................ 1
2004 Pontiac Grand Prix Owner ManualM

There is a air bag
readiness light on the
instrument panel which
shows the air bag symbol.
The system checks the air bag electrical system for
malfunctions. The light tells you if there is an electrical
problem. See
Air Bag Readiness Light on page 3-34for more information.
Where Are the Air Bags?
The driver's air bag is in the middle of the steering
wheel.
1-50

Trunk
{CAUTION:
It can be dangerous to drive with the trunk lid
open because carbon monoxide (CO) gas can
come into your vehicle. You can't see or smell
CO. It can cause unconsciousness and even
death. If you must drive with the trunk lid
open or if electrical wiring or other cable
connections must pass through the seal
between the body and the trunk lid:
·Make sure all other windows are shut.
·Turn the fan on your heating or cooling
system to its highest speed and select the
control setting that will force outside air
into your vehicle. See ªClimate Control
Systemº in the Index.
·If you have air outlets on or under the
instrument panel, open them all the way.
See ªEngine Exhaustº in the Index.
Trunk Lock
To unlock the trunk from the outside, insert the key into
the lock on the trunk and turn it clockwise. You can
also press the open trunk symbol on the remote keyless
entry transmitter. See
Remote Keyless Entry System
Operation on page 2-5for more information.
The ignition must be off, or, the transaxle must be in
PARK (P), in order for the trunk to open.
Remote Trunk Release
This feature is used to unlock the trunk from inside the
vehicle using the power door lock switch.
Press and hold the
power door lock switch
to the left for one and
one-half seconds to
unlock the trunk.
The transaxle must be in PARK (P) to activate the
trunk release.
2-10

PASS-KeyžIII Operation
Your vehicle is equipped
with PASS-KeyžIII
(Personalized Automotive
Security System)
theft-deterrent system.
PASS-Key
žIII is a passive
theft-deterrent system. This
means you don't have to do
anything special to arm or
disarm the system. It works
when you insert or remove
the key from the ignition.
When the PASS-Key
žIII system senses that someone
is using the wrong key, it shuts down the vehicle's
starter and fuel systems. The starter will not work and
fuel will stop ¯owing to the engine. Anyone using a
trial-and-error method to start the vehicle will be
discouraged because of the high number of electrical
key codes.When trying to start the vehicle, if the engine does not
start and the STARTING DISABLED DUE TO THEFT
SYSTEM warning message on the Driver's Information
Center (DIC) comes on, the key may have a damaged
transponder. Turn the ignition off and try again.
If the engine still does not start, and the key appears to
be undamaged, try another ignition key. At this time, you
may also want to check the fuse. See
Fuses and Circuit
Breakers on page 5-99. If the engine still does not start
with the other key, your vehicle needs service. If your
vehicle does start, the ®rst key may be faulty. See your
dealer who can service the PASS-Key
žIII to have a new
key made. In an emergency, contact Pontiac Roadside
Assistance. See
Roadside Assistance Program on
page 7-6for more information.
It is possible for the PASS-Key
žIII decoder to ªlearnº
the transponder value of a new or replacement key.
Up to 10 additional keys may be programmed for
the vehicle. The following procedure is for programming
additional keys only. If all the currently programmed
keys are lost or do not operate, you must see your
dealer or a locksmith who can service PASS-Key
žIII
to have keys made and programmed to the system.
2-16

Safety Belt Reminder Light
When the key is turned to RUN or START, a chime
will come on for several seconds to remind people to
fasten their safety belts, unless the driver's safety belt is
already buckled.
The safety belt light will
also come on and stay on
for several seconds,
then it will ¯ash for
several more.
If the driver's belt is already buckled, neither the chime
nor the light will come on.
Air Bag Readiness Light
There is an air bag readiness light on the instrument
panel, which shows the air bag symbol. The system
checks the air bag's electrical system for malfunctions.
The light tells you if there is an electrical problem.
The system check includes the air bag sensors, the air
bag modules, the wiring and the diagnostic module.
For more information on the air bag system, see
Air Bag
Systems on page 1-48.
This light will come on
when you start your
vehicle, and it will ¯ash
for a few seconds.
Then the light should
go out. This means the
system is ready.
If the air bag readiness light stays on after you start the
vehicle or comes on when you are driving, your air
bag system may not work properly. Have your vehicle
serviced right away.
3-34

Did you just drive through a deep puddle of water?
If so, your electrical system may be wet. The condition
will usually be corrected when the electrical system
dries out. A few driving trips should turn the light off.
Have you recently changed brands of fuel?
If so, be sure to fuel your vehicle with quality fuel.
See
Gasoline Octane on page 5-4. Poor fuel quality
will cause your engine not to run as efficiently as
designed. You may notice this as stalling after start-up,
stalling when you put the vehicle into gear, mis®ring,
hesitation on acceleration or stumbling on acceleration.
(These conditions may go away once the engine is
warmed up.) This will be detected by the system and
cause the light to turn on.
If you experience one or more of these conditions,
change the fuel brand you use. It will require at least
one full tank of the proper fuel to turn the light off.
If none of the above steps have made the light turn off,
your dealer can check the vehicle. Your dealer has the
proper test equipment and diagnostic tools to ®x any
mechanical or electrical problems that may have
developed.
Emissions Inspection and
Maintenance Programs
Some state/provincial and local governments have or
may begin programs to inspect the emission control
equipment on your vehicle. Failure to pass this
inspection could prevent you from getting a vehicle
registration.
Here are some things you need to know to help your
vehicle pass an inspection:
Your vehicle will not pass this inspection if the
Check Engine light is on or not working properly.
Your vehicle will not pass this inspection if the OBD
(on-board diagnostic) system determines that critical
emission control systems have not been completely
diagnosed by the system. The vehicle would be
considered not ready for inspection. This can happen
if you have recently replaced your battery or if your
battery has run down. The diagnostic system is
designed to evaluate critical emission control systems
during normal driving. This may take several days
of routine driving. If you have done this and your vehicle
still does not pass the inspection for lack of OBD
system readiness, your GM dealer can prepare the
vehicle for inspection.
3-42

CHARGING SYSTEM FAILURE
This symbol appears with
the CHARGING SYSTEM
FAILURE warning
message.
This warning message indicates that there is a problem
with the generator and battery charging systems.
Have the electrical system checked by your dealer as
soon as possible.
This warning message will display when the ignition
is in RUN. A chime will sound for two seconds when this
message is displayed. Press the set/reset button to
acknowledge this warning message and to clear it from
the screen.
This message will continue to display if it has not been
acknowledged when the engine is turned off. It will
also re-display for three seconds if the message has
been acknowledged, but the condition still exists
when the engine is turned off.
The message will re-appear when the engine is turned
on and the condition still exists.
CHECK GAS CAP
This warning message appears when the gas cap is not
on, or is not fully tightened. Check the gas cap to ensure
it is on and properly tightened.
This warning message will display while the ignition is
in RUN. A chime will sound for two seconds when this
message is displayed and then the screen will clear after
three seconds. Press the set/reset button to acknowledge
this warning message and to clear it from the screen.
This message will continue to display if it has not been
acknowledged when the engine is turned off. It will
also re-display for three seconds if the message has
been acknowledged, but the condition still exists
when the engine is turned off.
The message will re-appear when the engine is turned
on and the condition still exists.
3-67

If a Tire Goes Flat........................................5-78
Changing a Flat Tire.....................................5-78
Compact Spare Tire......................................5-89
Appearance Care............................................5-90
Cleaning the Inside of Your Vehicle.................5-90
Care of Safety Belts......................................5-93
Weatherstrips...............................................5-93
Cleaning the Outside of Your Vehicle..............5-93
Sheet Metal Damage.....................................5-95
Finish Damage.............................................5-95
Underbody Maintenance................................5-96
Chemical Paint Spotting.................................5-96
GM Vehicle Care/Appearance Materials...........5-96Vehicle Identi®cation......................................5-98
Vehicle Identi®cation Number (VIN).................5-98
Service Parts Identi®cation Label.....................5-98
Electrical System............................................5-99
Add-On Electrical Equipment..........................5-99
Headlamp Wiring..........................................5-99
Windshield Wiper Fuses................................5-99
Power Windows and Other Power Options.......5-99
Fuses and Circuit Breakers............................5-99
Capacities and Speci®cations........................5-104
Capacities and Speci®cations........................5-104
Normal Maintenance Replacement Parts.........5-105
Normal Maintenance Replacement Parts.........5-105
Section 5 Service and Appearance Care
5-2