1998 GMC SAVANA Owners Manual

Anti-Lock Brake System Warning Light
ANTI -
LOCK
United States Canada
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.
If the light stays on, or comes
on when you’re driving,
your vehicle 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 section.
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.
Engine Coolant Temperature Gage
This gage shows the engine
gage pointer moves into
the red area your engine is
coolant temperature.
If the
260 too
hot!
It means that your engine coolant has overheated.
If
you have been operating your vehicle under normal
operating conditions,
you should pull off the road, stop
your vehicle, and turn off the engine as soon as possible.
The “Problems on the Road’’ section of this
manual shows what
to do. See “Engine Overheating”
in the Index.
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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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If the Light Is Flashing If the Light Is On Steady
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.
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. 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. 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. 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.
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.
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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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Fuel Gage
UNLEADED
FUEL ONLY
The fuel gage, when the
ignition is on, tells you
about how much fuel you
have left in your tank.
The gage will first indicate EMPTY
(E) before you
are
out of fuel, and you should get more fuel as soon
as possible. Listed
are four situations
you may experience with your
fuel gage:
At the gas station, the fuel pump shuts off before the
gage reads
FULL (F).
0 It takes a little more or less fuel to fill up than the
fuel 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.
The gage moves a little when you turn a corner or
speed up.
0 The gage doesn’t go back to EMPTY (E) when you
turn off the ignition.
None of these indicate
a problem with the fuel gage.
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& NOTES
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