2003 PONTIAC BONNEVILLE check engine

Tire Pressure Light
The check tire pressure system can alert you to a large
change in the pressure of one tire.
TIRE PRESS
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
Check Tire Pressure
System on page
5-64.
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
Anti-Lock Brake System Warning Light on page 3-43.
On vehicles with the optional Driver Information Center
(DIC), a
CHECK TIRE PRESSURE message replaces
the TIRE
PRESS light when the system detects a
pressure difference (low pressure) in one tire. See
DIC
Warnings and Messages on page 3-60 for more
information.
Malfunction Indicator Lamp
Service Engine Soon Light
Your vehicle is equipped
with a computer which
monitors operation of the
fuel, ignition and emission
SERVICE
ENGl NE SOON control systems.
This system is called OBD
I1 (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
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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.
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.
N~tice: Msdifications made to the engine,
transaxle, exhaust, intake 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 this light to come on.
Modifications to these systems could lead to costly
repairs
mi covered by your warraiiiy. This zzy
also result in a failure to pass a required Emission
lnspection/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 iight cioesn’i corns on, LA. ,_ :I IIclVG I1
repaired. This light will also come on during a
malfunction in one of two ways:
0 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.
0 If you are towing a trailer, reduce the amount of
cargo being irauied as suwh as it is p~~sibk.
If the light stops flashing and remains on steady, see “If
the Light
Is On Steady” following.
If the light continues to flash, when
it is safe to do so,
stop the vehicle.
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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 “If the Light Is On
Steady” 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
Filling Your Tank on page 5-8. 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
Gasoline Octane on page 5-5. 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.
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.
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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 shaded warning zone indicate the
normal operating range. Oil pressure may vary with
engine speed, outside temperature and oil viscosity.
A reading in the shaded warning zone may be caused
by a low oil level or another problem causing low
011
pressure. On vehicles with the systems monitor,
the
CHECK GAGES light will come on and a warning
chime will sound.
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On vehicles with a DIC, a CHECK GAGES OIL
PRESSURE message will be displayed and a warning
chime will sound. See
DIC Warnings and Messages
on Daue
3-60 for more information.
Don’t keep drivi
J 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 Light
If your vehicle has the
systems monitor, the
comes on for five seconds CHECK
OIL LEVEL light
OIL LEVEL I as
a-bulb check each
time the ignition key
I is turned io ON.
If the engine oil is more than 1 .O quart (0.9 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 Engine Oil on
page
5- 15.
On vehicles with a DIC, the CHECK OIL LEVEL light is
replaced by an OIL LEVEL
LOW message. See DIC
Warnings and Messages on page 3-60 for more
information.
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Service Vehicle Soon Light
SERVICE
VEHICLE
SOON
b If your vehicle has this
feature, this light will come
on briefly as a bulb
check when your ignition is
turned to
ON.
This light will come on and a warning chime will sound if
you have certain non-emissions related vehicle
problems. 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 a
DIC,
the SERVICE VEHICLE SOON light is replaced by
the SERVICE VEHICLE
SOON message. See
UIL vvarnings ana iviessayes vri paye S-SC fzlr EGE
information.
-.- ...
Fuel Gage
United States Canada
When the ignition
is on, your fuel gage tells you about
how much fuel you have
in your tank.
When the gage reads
in the colored band, a warning
chime will sound and the CHECK GAGES warning light
will come on. You still have a little fuel left, but you
need to get more fuel right away.
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On vehicles with a DIC, the CHECK GAGES LOW
FUEL message will be displayed when the fuel gage
reads
in the yellow band. See DIC Warnings and
Messages on page
3-60 for more information.
Here are some things that owners ask about. None of
these show a problem with your fuel gage:
At the service station, the gas pump shuts off
before the gage reads full.
It takes a little more (or less) fuel to fill up than the
gage indicated. For example, the gage may have
indicated the tank was half full, but it actually took a
little more (or less) than half the tank’s capacity
to
fill the tank.
Boost Gage
Vehicles equipped with the supercharged engine have
this boost gage that
indicates vacuum during
light to moderate
throttle and boost under
heavier throttle.
The gage displays the air pressure level going into the
engine’s combustion chamber.
The gage is automatically centered at zero every time
the ignition key is turned to
ON. Actual vacuum or boost
is displayed from this zero point. Changes in ambient
pressure, such as driving in mountains and changing
weather, will slightly change the zero reading.
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Battery Volts: On vehicles with a supercharged
engine, press the SELECT button until the display
shows BATTERY VOLTS. If the voltage is normal the
display will show BATTERY
## VOLTS. If the voltage
drops below
10.5 volts for 30 seconds, the battery volts
display will show BATTERY LOW.
If the voltage is
above
16.2 volts for 30 seconds, the battery volts display
will show BATTERY HIGH.
If the display shows the
high or low message, you need to have your batterv
and/or electrical system checked.
GM Oil Life SystemTM: Press the SELECT button until
OIL LIFE appears in the display. The
OIL LIFE
NORMAL display will show an estimate of the oil’s
remaining useful life. When the oil life index is less than
IO%, an ENGINE 0iL CHANGE SOON message wiii
be displayed and the oil life display
will show OIL LIFE
CHANGE. When you have the
oil changed according
to the maintenance schedule, you will have to reset the
Oil Life System. To reset the Oil Life System, see
“When to Change Engine Oil” under
Engine Oil on
page
5- 15.
Tire Pressure Status: Press the SELECT button until
TIRE PRESSURE appears
in the display. TIRE
PRESSURE NORMAL
is displayed when the Check
Tire Pressure System believes your vehicle’s tire
pressures are normal. If a potential problem is detected,
the display will show CHECK TIRE PRESSURE and
the tire pressure status will show TIRE PRESSURE
LOW.
If you see the CHECK TIRE PRESSURE
message, you should stop
as soon as you can and
check all your tires for damage.
(If a tire is flat, see If a
Tire Goes Flat on page
5-72.) Also check the tire
pressure in all four tires as soon as you can. See
lnflation -- Tire Pressure on page 5-62 and Check Tire
Pressure System on page
5-64.
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