1998 GMC SAVANA light

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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Air Conditioning Heating
Before using your vehicle’s air conditioning, open the
windows to clear the vehicle
of hot air. This reduces the
time it takes for your vehicle to cool down. Then keep
your windows closed for the air conditioner to work at
its best.
You can use MAX
AIC with the temperature knob in the
blue area when it’s really hot outside and you need to
cool
the inside air quickly. MAX A/C lets in only a little
air from the outside.
If you first
use MAX A/C, you can then use A/C with
the temperature knob in the blue area, as soon as the
vehicle has cooled down,
so outside air will be going
through your vehicle.
If your vehicle has rear air conditioning, setting it on
LO
may enhance front A/C performance by allowing
trapped refrigerant in rear lines to circulate.
When the air conditioning,
DEFROST or BLEND is on,
you may notice a slight increase
or decrease in engine
speed, due to compressor operation. This
is normal
because the system
is designed to cycle the compressor
on and off to keep the desired temperature.
On cold days, use HEATER with the temperature knob
in the red area. Outside air will be brought in through
the floor outlets. The heater works best if you keep your
windows closed while using it.
If you use the optional engine coolant heater before
starting your engine, your heating system will produce
warmer air faster
to heat the passenger compartment in
cold weather. See “Engine Coolant Heater” in the Index.
Ventilation Tips
0
0
0
Keep the hood and front air inlet free of ice, snow, or
any other obstruction (such
as leaves). The heater
and defroster will work
far better, reducing the
chance of fogging
the inside of your windows.
When you
enter a vehicle in cold weather, turn the
blower fan to
HI for a few moments before driving
off. This helps clear the intake ducts of snow and
moisture, and reduces the chance
of fogging the
inside
of your windows.
Keep the air path under the front seats clear of objects.
This helps air
to circulate throughout your vehicle.
Your vehicle has air vents in
the center and on the sides
of your instrument panel.
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Finding a Station
AM-FM:
Press the lower knob to switch between AM
and FM. The display shows your selection.
TUNE: Turn the lower knob to tune in radio stations.
SEEK: Press the right arrow to tune to the next higher
station and the left arrow to tune to the next lower
station and stay there.
SCAN: Press both SEEK buttons to listen to a few seconds
of each radio station.
SCAN will light up on the display. Press
the right arrow to tune in the next higher station and press \
the
left arrow to tune to the next lower station. Press
VOLUME
or both SEEK buttons to stop scanning.
PUSHBUTTONS: The four numbered pushbuttons let
you return to your favorite stations. You can set up to
14 stations (seven AM and seven FM). Just:
1. Turn the radio on.
2. Press AM-FM to select the band.
3. Tune in the desired station.
4. Press SET. (SET will appear on the display.)
5. Press and hold one of the four pushbuttons within
five seconds. Whenever you press that numbered
button, the station you set will return.
6. Repeat the steps for each pushbutton. In
addition to the four stations already set,
up to three
more stations may be preset on each band by pressing
two adjoining buttons at the same time. Just:
1. Tune in the desired station.
2. Press SET. (SET will appear on the display.)
3. Press two adjoining buttons at the same time, within
five seconds. Whenever you press the same two
buttons, the station you set will return.
4. Repeat the steps for each pair of pushbuttons.
Setting the Tone
BASS:
Slide this lever up or down to increase or
decrease bass.
TREB: Slide this lever up or down to increase or
decrease treble. If a station is weak or noisy, you may
want to decrease the treble.
Adjusting the Speakers
BAL: Turn the control behind the upper knob to move
the sound to the left or right speakers. The middle
position balances the sound between the speakers.
FADE: Turn the control behind the lower knob to move
the sound to the front or rear speakers. The middle
position balances the sound between the speakers.
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SCV Your system has a feature called
Speed-Compensated-Volume
(SCV). With SCV, your
audio system adjusts automatically
to make up for road
and wind noise as
you drive. Set the volume at the
desired level. Move the control ring behind the upper
knob to the right
to adjust the SCV. Then, as you drive,
SCV automatically increases the volume, as necessary,
to overcome noise at any particular speed. The volume
level should always sound the same
to you as you drive.
If you don’t want
to use SCV, turn the control all the
way down.
Each notch on the control ring allows for
more volume compensation at faster vehicle speeds.
Finding a Station
AM-FM: Press this button to switch between AM, FMl
and FM2. The display will show your selection.
TUNE: Press this knob lightly so it extends. Turn it to
choose radio stations. Push the knob back into its stored
position when you’re not using it.
SEEK: Press the right arrow to tune to the next higher
station and
the left arrow to tune to the next lower station
and stay there. The sound
will mute while seeking.
SCAN: Press and hold SEEK for two seconds until
SCAN appears
on the display. SCAN allows you to
listen to stations for
a few seconds. The receiver will
continue to scan and momentarily stop at each station
until you press the button again. The sound will mute
while scanning.
PUSHBUTTONS: The six numbered pushbuttons let
you return to your favorite stations. You can set up
to
18 stations (six AM, six FMl and six FM2). Just:
1. Turn the radio on.
2. Press AM-FM to select the band.
3. Tune in the desired station.
4. Press AUTO TONE to select the setting you prefer.
5. Press and hold one of the six pushbuttons. The sound
will mute. When
it returns, release the button.
Whenever you press that numbered button, the
station you set
will return and the tone you selected
will be automatically selected
for that button.
6. Repeat the steps for each pushbutton.
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