check engine light PONTIAC BONNEVILLE 2000 Owners Manual

2-18
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
(1) this device may not cause harmful interference,
and (2) this device must accept any interference
received, including interference that may cause
undesired operation.
This device complies with RSS
-210 of Industry Canada.
Operation is subject to the following two conditions:
(1) this device may not cause harmful interference,
and (2) this device must accept any interference
received, including interference that may cause
undesired operation.
Changes or modifications to this system by other than an
authorized service facility could void authorization to
use this equipment.
PASS
-Key III uses a radio frequency transponder in the
key that matches a decoder in your vehicle.
When the PASS
-Key III 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 being delivered 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 SECURITY light 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 ªFuses and
Circuit Breakersº in the Index). If the engine still does
not start with the other key, your vehicle needs service.
If your vehicle does start, the first key may be faulty.
See your dealer or a locksmith who can service the
PASS
-Key III to have a new key made.
It is possible for the PASS
-Key III decoder to learn the
transponder value of a new or replacement key. Up to
10 keys may be programmed for the vehicle. This
procedure is for learning 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 III to have keys made and programmed to
the system.
See your dealer or a locksmith who can service
PASS
-Key III to get a new key blank that is a cut
exactly as a current black colored driver's key that
operates the system. Do not used a gray
-colored valet
key for this procedure.

2-64
Warning Lights, Gages
and Indicators
This part describes the warning lights and gages that
may be on your vehicle. The pictures will help you
locate them.
Warning lights and gages can signal that something is
wrong before it becomes serious enough to cause an
expensive repair or replacement. Paying attention to
your warning lights and gages could also save you or
others from injury.
Warning lights come on when there may be or is a
problem with one of your vehicle's functions. As you
will see in the details on the next few pages, some
warning lights come on briefly when you start the
engine just to let you know they're working. If you are
familiar with this section, you should not be alarmed
when this happens.
Gages can indicate when there may be or is a problem
with one of your vehicle's functions. Often gages and
warning lights work together to let you know when
there's a problem with your vehicle.When one of the warning lights comes on and stays on
when you are driving, or when one of the gages shows
there may be a problem, check the section that tells you
what to do about it. Please follow this manual's advice.
Waiting to do repairs can be costly
-- and even
dangerous. So please get to know your warning lights
and gages. They're a big help.
Your vehicle may also have a Driver Information Center
that works along with the warning lights and gages.
See ªDriver Information Centerº in the Index.
The volume of your vehicle's warning chimes can be
adjusted. For more information see ªChime Level
Adjustmentº in the Index.
Safety Belt Reminder Light
When the key is turned to RUN or START, a chime will
come on for about eight seconds to remind people to
fasten their safety belts.
The safety belt light will
also come on and either stay
on for about 20 seconds,
then flash for about
55 seconds, or stay on for
about 65 seconds.

2-66
Battery Warning Light (If Equipped)
This light will come on
briefly when you start the
vehicle, as a check to show
you it is working; then it
should go out.
If it stays on, or comes on while you are driving, you
may have a problem with the electrical charging system.
It could indicate that you have a generator problem or
another electrical system problem. Have it checked right
away. Driving while this light is on could drain
your battery.
If you must drive a short distance with the light on, be
certain to turn off all your accessories, such as the radio
and comfort control system.
Some instrument panel clusters with a voltmeter gage do
not have a battery warning light. They have a CHECK
GAGES warning to indicate a problem.
On vehicles with the optional DIC, a CHECK CHARGE
SYSTEM message will be displayed and a warning
chime will sound. See ªDIC Warnings and Messagesº in
the Index for more information.
Voltmeter (If Equipped)
You have a voltmeter
unless you have the
supercharged engine.
When the ignition is running, the gage shows the
condition of the charging system. Readings between the
red warning zones indicate the normal operating range.
Readings in the red warning zones indicate a possible
problem in the electrical system.
On vehicles with the systems monitor, the CHECK
GAGES light will also come on, and a warning chime
will sound if there is a problem in the electrical system.
Have your vehicle serviced immediately.
On vehicles with the optional DIC, a CHECK CHARGE
SYSTEM message will be displayed and a warning chime
will sound if there is a problem in the electrical system. Have
your vehicle serviced immediately. See ªDIC Warnings and
Messagesº in the Index for more information.

2-70

The optional Traction Control System is active and is
limiting wheel spin. You may feel the system
working, but this is normal. Slippery road conditions
may exist, so adjust your driving accordingly.
If the LOW TRAC light comes on, slippery road
conditions may exist, so you should consider slowing
down and adjusting your driving accordingly.
Engine Coolant Temperature Gage
United States Canada
This gage shows the engine coolant temperature.To prevent engine overheating, the air conditioning
compressor will turn off automatically just prior to the
gage pointer entering the red area. As the engine cools
down, the air conditioning compressor will
automatically turn back on. On vehicles equipped with
the DIC, the message ENGINE HOT... A/C DISABLED
will appear in the DIC display and a warning chime
will sound.
If the gage pointer moves into the red area, your engine
is too hot. On vehicles equipped with the systems
monitor, the CHECK GAGES light will come on and a
warning chime will sound.
On vehicles with the optional DIC, a CHECK GAGES
TEMPERATURE message will be displayed and a
warning chime will sound. See ªDIC Warnings and
Messagesº in the Index for more information.
The section ªProblems on the Road,º in this manual
explains what to do if your engine overheats.
See ªEngine Overheatingº in the Index.

2-71 Tire Pressure Light (If Equipped)
The check tire pressure
system can alert you to
a large change in the
pressure of one tire.
After the system has been properly calibrated, the
TIRE PRESS light will come on if a pressure difference
(low pressure) is detected in one tire.
The light will stay on until you turn off the ignition or
reset (calibrate) the system. See ªCheck Tire Pressure
Systemº in the Index.
The TIRE PRESS light also comes on briefly when you
turn your ignition key to START. If the light doesn't
come on then, have it fixed so it will be there to tell you
if the pressure in a tire is low.
If the anti
-lock brake system warning light comes on,
the check tire pressure system may not be working
properly. See your dealer for service. (Also, see
ªAnti
-Lock Brake System Warning Lightº in the Index).
Malfunction Indicator Lamp
(Service Engine Soon Light)
Your vehicle is equipped
with a computer which
monitors operation of the
fuel, ignition and emission
control systems.
This system is called OBD II (On
-Board
Diagnostics
-Second Generation) and is intended to
assure that emissions are at acceptable levels for the
life of the vehicle, helping to produce a cleaner
environment. The SERVICE ENGINE SOON light
comes on to indicate that there is a problem and service
is required. Malfunctions often will be indicated by the
system before any problem is apparent. This may
prevent more serious damage to your vehicle. This
system is also designed to assist your service technician
in correctly diagnosing any malfunction.

2-72
NOTICE:
If you keep driving your vehicle with this light
on, after a while, your emission controls may not
work as well, your fuel economy may not be as
good and your engine may not run as smoothly.
This could lead to costly repairs that may not be
covered by your warranty.
NOTICE:
Modifications made to the engine, transaxle,
exhaust or fuel system of your vehicle or the
replacement of the original tires with other than
those of the same Tire Performance Criteria
(TPC) can affect your vehicle's emission controls
and may cause the SERVICE ENGINE SOON
light to come on. Modifications to these systems
could lead to costly repairs not covered by your
warranty. This may also result in a failure to pass
a required Emission Inspection/Maintenance test.
This light should come on, as a check to show you it is
working, when the ignition is on and the engine is not
running. If the light doesn't come on, have it repaired.
This light will also come on during a malfunction in one
of two ways:

Light Flashing
-- A misfire condition has been
detected. A misfire increases vehicle emissions and
may damage the emission control system on your
vehicle. Dealer or qualified service center diagnosis
and service may be required.

Light On Steady
-- An emission control system
malfunction has been detected on your vehicle.
Dealer or qualified service center diagnosis and
service may be required.
If the Light Is Flashing
The following may prevent more serious damage to
your vehicle:

Reducing vehicle speed.

Avoiding hard accelerations.

Avoiding steep uphill grades.

If you are towing a trailer, reduce the amount of
cargo being hauled as soon as it is possible.

2-73
If the light stops flashing and remains on steady,
see ªIf the Light Is On Steadyº following.
If the light continues to flash, when it is safe to do so,
stop the vehicle. Find a safe place to park your vehicle.
Turn the key off, wait at least 10 seconds and restart the
engine. If the light remains on steady, see ªIf the Light
Is On Steadyº following. If the light is still flashing,
follow the previous steps, and drive the vehicle to your
dealer or qualified service center for service.
If the Light Is On Steady
You may be able to correct the emission system
malfunction by considering the following:
Did you recently put fuel into your vehicle?
If so, reinstall the fuel cap, making sure to fully install
the cap. See ªFilling Your Tankº in the Index. The
diagnostic system can determine if the fuel cap has been
left off or improperly installed. A loose or missing fuel
cap will allow fuel to evaporate into the atmosphere.
A few driving trips with the cap properly installed
should turn the light off.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 ªFuelº in the Index). 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, misfiring, 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,
have your dealer or qualified service center check the
vehicle. Your dealer has the proper test equipment and
diagnostic tools to fix any mechanical or electrical
problems that may have developed.

2-74
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 in order to
help your vehicle pass an inspection:
Your vehicle will not pass this inspection if the
SERVICE ENGINE SOON 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, see your dealer or qualified service center to
prepare the vehicle for inspection.
Oil Pressure Gage
United States Canada
Readings above the red warning zone indicate the
normal operating range. Oil pressure may vary with
engine speed, outside temperature and oil viscosity.
A reading in the red warning zone may be caused by
a low oil level or another problem causing low oil
pressure. On vehicles with the systems monitor, the
CHECK GAGES light will come on and a warning
chime will sound.

2-75
On vehicles with the optional DIC, a CHECK GAGES
OIL PRESSURE message will be displayed and a
warning chime will sound. See ªDIC Warnings and
Messagesº in the Index for more information.
CAUTION:
Don't keep driving if the oil pressure is low.
If you do, your engine can become so hot that
it catches fire. You or others could be burned.
Check your oil as soon as possible and have your
vehicle serviced.
NOTICE:
Damage to your engine from neglected oil
problems can be costly and is not covered by
your warranty.
Check Oil Level Warning Light
(If Equipped)
The CHECK OIL LEVEL
light is part of the systems
monitor. This light comes
on for five seconds as a bulb
check each time the ignition
key is turned to RUN.
If the engine oil is more than 1 quart (0.95 L) low and
the engine has been shut off for at least eight minutes,
the CHECK OIL LEVEL light will come on and a
chime will sound the next time you start your vehicle.
If the CHECK OIL LEVEL light comes on, the engine
oil level should be checked at the dipstick then brought
up to the proper level, if necessary. See ªEngine Oilº in
the Index.
On vehicles with the optional DIC, the CHECK OIL
LEVEL light is replaced by an OIL LEVEL LOW
message. See ªDIC Warnings and Messagesº in the
Index for more information.

2-76
Service Vehicle Soon Light (If Equipped)
This light will come on
briefly as a bulb check
when your ignition is
turned to RUN.
This light will come on and a warning chime will sound
if you have a certain non
-emissions related vehicle
problem. These problems may not be so obvious and
may not affect vehicle performance or durability.
Consult a qualified dealership for necessary repairs to
maintain top vehicle performance.
On vehicles with the supercharged engine and the
optional DIC, the SERVICE VEHICLE SOON light is
replaced by the SERVICE VEHICLE SOON message.
See ªDIC Warnings and Messagesº in the Index for
more information.
Low Washer Fluid Warning Light
(If Equipped)
This light is part of the
systems monitor. It will
come on and a warning
chime will sound when the
washer fluid container is
less than one
-third full.
On vehicles with the optional DIC, the WASHER
FLUID light is replaced by the WASHER FLUID LOW
message. See ªDIC Warnings and Messagesº in the
Index for more information.