1998 GMC SAVANA check engine light

Parking Lots
If you park in a lot where someone will be watching
your vehicle, it’s best to lock it up and take your keys.
But what if
you have to leave your ignition key? What if
you have to leave something valuable in your vehicle?
Put your valuables in a storage area, like your front
storage compartment.
Lock all the doors excePt the driver’s.
Passlock’
Your vehicle is equipped with the Passlock
theft-deterrent system.
Passlock is a passive theft-deterrent system. The system
is armed once the key is removed from the ignition.
Passlock enables fuel if the ignition lock cylinder is
turned with a valid key.
If a correct key is not used,
fuel is disabled. During
normal operation, the SECURITY light will go
off after the engine is started.
If the engine stalls and the SECURITY light flashes,
wait until the light stops flashing before trying to restart
the engine. Remember to release the key from the
START position as soon
as the engine starts.
If you are driving and the SECURITY light comes on, you
will be able
to restart the engine if you turn the engine off.
However, your Passlock system is not working properly
and must
be serviced by your dealer. Your vehicle is not
protected by Passlock at
this time. You may also want to
check the
fuse (see “Fuses and Circuit Breakers” in the
Index). See your dealer for service.
If the SECURITY light comes on while
the engine is
running, a problem has been detected and the system
may need service. See your dealer for service.
In an emergency, call the
GM Roadside Assistance
Center. See “Roadside Assistance” in the Index.
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Electronic Road-Speed Governor
(Gasoline Engines) (Option)
This optional system automatically controls vehicle top
speed. The system controller receives
a signal from the
vehicle speed sensor and reduces power when the
vehicle speed reaches the maximum
65 mph (105 kdh)
governed speed.
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.
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
5 5 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 sensor, the air bag modules,
the wiring and the crash sensing and diagnostic module.
For more information
on the air bag system, see “Air
Bag” in the Index.
AIR
This light will come on
when you start your engine,
and it will flash 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
engine or comes on when you are driving, your air bag
system may not work properly. Have your vehicle
serviced right away. The
air bag readiness light should flash for a few
seconds 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.
Charging System Light
(CJ
This light should come on
briefly when you turn on the
ignition, before starting the
engine, as a check to show
you it is working.
After the engine starts, the light should
go out. If it stays
on or comes on while you are driving, you may have a
problem with your charging system. It could indicate a
problem with the alternator drive belt, or some other
charging 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 this light
on, it
helps
to turn off all your accessories, such as the radio
and air conditioner.
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Malfunction Indicator Lamp (Service
Engine Soon Light) (Gasoline Engine)
I I Your vehicle is equipped
SERVICE
ENGINE
with a computer which
monitors operation of the
fuel, ignition and emission
SOON control systems.
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 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. This may
prevent more serious damage to your vehicle. This
system is also designed to assist your service technician
in correctly diagnosing any malfunction. 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.
GM or qualified service center diagnosis
and service may be required.
0 Light On Steady -- An emission control system
malfunction has been detected
on your vehicle. GM
or qualified service center diagnosis and service may
be required.
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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 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.
Oil Pressure Gage
The oil pressure gage
shows the engine oil
pressure in psi (pounds per
square inch) when
the
engine is running. Canadian
vehicles indicate pressure
in kPa (kilopascals).
OIL -1
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 problem causing low
oil pressure. Check your oil as soon as possible.
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-
UTION:
-
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:
I I
Damage to your engine from neglected oil
problems can be costly and is not covered by
your warranty.
Security Light
SECURITY
This light will come on
briefly when you turn the ignition key
to START.
The light will stay
on until the engine starts. If the light
flashes, the Passlock@System has entered a tamper
mode. If the vehicle fails to start,
see “Passlock” in
the Index.
If the light comes on continuously while driving and
stays
on, there may be a problem with the Passlock
System. Your vehicle will
not be protected by Passlock,
and
you should see your GM dealer.
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Daytime Running Lamps Indicator Light
You may have this light on
the instrument panel. It will
light whenever the
DRL are
on. It is also a reminder to
turn on your headlamps
when driving at night.
Check Gages Light
CHECK
GAGES
The CHECK GAGES light
will come
on briefly when
you are starting the engine.
If the light comes on and stays on while you are driving,
check your coolant temperature and engine
oil pressure
gages
to see if they are in the warning zones.
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Anti-Lock Brakes (ABS)
Your vehicle has anti-lock brakes (ABS). ABS is an
advanced electronic braking system that will help
prevent a braking skid.
When you start your engine and begin to drive away,
your anti-lock brake system will check itself.
You may
hear a momentary motor or clicking noise while this test
is going
on. This is normal.
ANTI -
LOCK
United States
Canada
If there’s a problem with the anti-lock brake system, this
warning light will stay
on. See “Anti-Lock Brake
System Warning Light” in the Index. Here’s how anti-lock works. Let’s say the road
is wet.
You’re driving
safely. Suddenly an animal jumps out in
front of you.
You slam
on the brakes. Here’s what happens with ABS.
A computer senses that wheels are slowing down. If one
of the wheels is about to stop rolling, the computer will
separately work the brakes at each front wheel and at
both rear wheels.
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