1996 OLDSMOBILE BRAVADA engine

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 also has
a driver information system that
works along with
the warning lights and gages. See
“Driver Information System” in the Index.
Safety Belt Reminder Light
When the key is turned to RUN or START, a tone will
come on for about eight 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 about 20 seconds, then it
will flash for about
55 seconds. If the driver’s
belt is already buckled,
neither the tone nor the light
will come on.
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Air Bag Readiness Light
There is an air bag readiness light on the instrument
panel, which shows AIR
BAG. 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 module,
the wiring and the diagnostic module. For more information on the air bag system, see “Air Bag” in
the Index.
AIR
BAG
You will see this light flash
for a few seconds when you
turn your ignition to RUN
or START. Then the light
should go out. This means
the system is ready.
If the air bag readiness light doesn’t come on when you
start your vehicle, or stays on, or comes on when you
are driving, your air bag system may not work properly.
Have your vehicle serviced right away.
Charging System Indicator Light
The charging system light
will come on briefly when
you
turn on the ignition,
but the engine is not
running, as
a check to
show you
it is working.
It should go out once the engine is running. If it stays
on, or comes on while you
are driving, you may have a
problem with the charging system. It could indicate that
you have problems with a generator drive belt, or
another electrical 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 air conditioner.
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Voltmeter Gage
(J VOLTS
When your engine is not
running, but
the ignition is
on
(in the RUN position),
this gage shows your
battery's state of charge
in
DC volts.
When
the engine is running, the gage shows the
condition of the charging system. Readings between the
low and high warning zones indicate the normal
operating range. Readings
in the low warning zone may occur when a
large number
of electrical accessories are operating in
the vehicle and the engine is left at an idle for an
extended period. This condition is normal since the
charging system is not able
to provide full power at
engine idle.
As engine speeds are increased, this
condition should correct itself as higher engine speeds
allow the charging system to create maximum power.
You can only drive for a short time with the reading in
either warning zone. If you must drive, turn off all
unnecessary accessories.
Readings in either warning zone indicate a possible
problem
in the electrical system. Have the vehicle
serviced as soon
as possible.
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Anti-Lock Brake System Warning Light
With the anti-lock brake
system, this light will come
on when you start your
engine and may stay on
for several seconds.
That‘s normal.
Engine Coolant Temperature Gage
This gage shows the engine
coolant temperature.
If the
gage pointer moves into the
red area, your engine is
too hot!
If the light stays on, or comes on when you’re driving,
your Oldsmobile needs service. If the regular brake
system warning light isn’t
on, you still have brakes, but
you don’t have anti-lock brakes.
If the regular brake
system warning light is also on, you don’t have anti-lock
brakes and there’s a problem with your regular brakes.
See “Brake System Warning Light” earlier in this part.
The anti-lock brake system warning light should come
on briefly when you turn
the ignition key to RUN. If the
light doesn’t come on then, have
it fixed so it will be
ready
to warn you if there is a problem. It
means that your engine coolant has overheated.
Tf you
have been operating your vehicle under normal driving
conditions, you should pull off the road, stop your
vehicle and turn off the engine
as soon as possible.
In “Problems on the Road,”
this manual shows you what
to do. See “Engine Overheating” in the Index.
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Malfunction Indicator Lamp (Service Engine
Soon Light)
SERVICE
ENGINE
SOON
Your Oldsmobile is
equipped with a computer
which monitors operation of
the fuel, ignition and
emission 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
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, which may
prevent more serious damage to your vehicle. This
system is also designed to assist your service technician
in correctly diagnosing any malfunction.
I
0
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.
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
0
vehicle. Retailer or qualified service center diagnosis
and service is required.
Light On Steady -- An emission control system
malfunction has been detected on your vehicle.
Retailer
or qualified service center diagnosis and
service may be required.
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If the Light Is Flashing
The following may prevent more serious damage to
your vehicle:
Reduce vehicle speed.
Avoid hard accelerations.
Avoid steep uphill grades.
If the Light Is On Steady
You may be able to correct the emission system
malfunction
by considering the following:
If towing a trailer, reduce the amount of cargo being
hauled as soon as it is possible.
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. Put your vehicle in PARK (P). 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 retailer or
qualified. service center for service. Did you
just put fuel into your vehicle?
If so, reinstall the fuel cap, making sure to fully install
the cap. The diagnostic system can determine
if the fuel
cap has been left off or improperly installed. This
will
allow fuel to evaporate into the atmosphere. A few
driving trips 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.
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Are you low on fuel?
As your engine starts to run out of fuel, your engine may
not run as efficiently
as designed since small amounts of
air are sucked into the fuel line causing a misfire. The
system can detect this. Adding
fuel should correct this
condition. Make sure
to install the fuel cap properly. It
will take a few driving trips to turn the light off.
Have you recently changed brands
of fuel?
If so, be sure to fuel your vehicle with quality fuel (see
“Fuel” 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 this condition, 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 retailer or qualified service center check the
vehicle. Your retailer has the proper test equipment and
diagnostic tools
to fix any mechanical or electrical
problems that may have developed.
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Engine Oil Pressure Gage
OIL om
The oil pressure gage shows
the engine oil pressure in
psi (pounds per square inch)
when the engine is running.
Oil pressure may vary with engine speed, outside
temperature
and oil viscosity, but readings above the
low pressure zone indicate the normal operating range.
A reading in the low pressure zone may be caused by a
dangerously low
oil level or other problems causing low
oil pressure.
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.
I NOTICE:
Damage to your engine from neglected oil
problems can be costly and is not covered by
your warranty.
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