1997 CHEVROLET TAHOE fuel

Downloaded from www.Manualslib.com manuals search engine Vehicle Symbols
These are some of the symbols you may find on your vehicle.
For example,
these symbols
are used on an
original battery:
POSSIBLE A
CAUTION
INJURY
PROTECT EYES BY
SHIELDING
CAUSTIC
ACID COULD BAllERY
CAUSE
BURNS
AVOID
SPARKS
OR
FLAMES
SPARK
OR ,\I/,
COULD FLAME
EXPLODE BATTERY
These symbols
are important
for you and
your passengers
whenever your
vehicle is
driven:
DOOR LOCK
UNLOCK
FASTEN SEAT
BELTS
POWER
WINDOW
These symbols
have to
do with
your lamps:
SIGNALS e
TURN
WARNING
A
HAZARD
FLASHER
RUNNING
* . 0
DAYTIME
LAMPS
FOG LAMPS $0
These symbols
are on some
of
your controls:
WINDSHIELD
WIPER
WINDSHIELD DEFROSTER
WINDOW
DEFOGGER
VENTILATING FAN
These symbols are used on
warning and
indicator lights:
COOLANT -
TEMP -
CHARGING I-1
BATTERY
SYSTEM
BRAKE
(a)
COOLANT a
ENGINE OIL w,
PRESSURE
ANTI-LOCK
(@)
BRAKES
Here are some
other symbols
you may see:
FUSE
t
LIGHTER n
HORN )cr
SPEAKER
b
FUEL p3
V

Downloaded from www.Manualslib.com manuals search engine Engine Coolant Heater (Option)
In very cold weather, 0°F
(- 18 O C) or colder, the
engine coolant heater
can help.
You’ll get easier starting and better fuel economy during
engine warm-up. Usually, the coolant heater should be
plugged in a minimum of four hours prior
to starting
your vehicle.
To Use the Coolant Heater
1. Turn off the engine.
2. Open the hood and unwrap the electrical cord.
3. Plug it into a normal, grounded 110-volt AC outlet.
-
/! CAUTION:
Plugging the cord into an ungrounded outlet
could cause an electrical shock. Also, the wrong
kind of extension cord could overheat and cause
a fire.
You could be seriously injured. Plug the
cord into a properly grounded three-prong
110-volt AC outlet.
If the cord won’t reach, use a
heavy-duty three-prong extension cord rated for
at least
15 amps.
2-15

Downloaded from www.Manualslib.com manuals search engine AUTOMATIC OVERDRIVE (03): This position is for
normal driving. If you need more power for passing,
and you’re:
Going less than about 35 mph (56 km/h), push your
accelerator pedal about halfway down.
Going about 35 mph (56 km/h) or more, push the
accelerator all the way down.
You’ll shift down to the next gear and have
more power.
AUTOMATIC OVERDRIVE
(0) can be used when
towing a trailer, carrying a heavy load, driving on steep
hills or for off-road driving. You may want to shift the
transmission to THIRD
(3) or, if necessary, a lower gear
selection if the transmission shifts too often.
THIRD (3): This position is also used for normal
driving, however, it offers more power and lower fuel
economy than AUTOMATIC OVERDRIVE
(0).
SECOND (2): This position gives you more power but
lower fuel economy. You can use SECOND
(2) on hills.
It can help control your speed as you go down steep
mountain roads, but then
you would also want to use
your brakes off and
on.
If you manually select SECOND (2), the transmission will
drive
in second gear. You may use this feature for reducing
torque to the rear wheels when you are trying to start
your
vehicle from a stop on slippery road surfaces.
FIRST (1): This position gives you even more power
(but lower
fuel economy) than SECOND (2). You can
use it on very steep hills,
or in deep snow or mud. If the
selector lever is put in FIRST
(1) while the vehicle is
moving forward, the transmission won’t shift into first
gear until the vehicle is going slowly enough.
NOTICE:
If your rear wheels can’t rotate, don’t try to
drive. This might happen if you were stuck in
very deep sand or mud or were up against a solid
object. You could damage your transmission.
Also, if you stop when going uphill, don’t hold
your vehicle there with only the accelerator
pedal. This could overheat and damage the
transmission. Use your brakes or shift into
PARK (P) to hold your vehicle in position
on a hill.
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Downloaded from www.Manualslib.com manuals search engine An indicator near the lever shows you the transfer
case settings:
2-Wheel High (2H): This setting is for driving in most
street and highway situations. Your front axle
is not
engaged in two-wheel drive.
4-Wheel High (4H): This setting engages your front
axle to help drive your vehicle. Use 4H when you need
extra traction, such as
on wet or icy roads, or in most
off-road situations.
Neutral (N): Shift to this setting only when your vehicle
needs to be towed or when using a power take-off.
4-Wheel Low (4L): This setting also engages your front
axle to give you extra power and a higher driveline ratio.
This position should be used only for off-road driving.
You can shift from 2-WHEEL HIGH (2H) to 4-WHEEL
HIGH (4H) or from 4-WHEEL HIGH (4H) to
2-WHEEL HIGH (2H) while the vehicle is moving.
Your front axle may engage faster if you take your foot
off of the accelerator for
a few seconds after you shift.
In extremely cold weather, it may be necessary to stop
or slow the vehicle to shift into 4-WHEEL HIGH (4H). To
shift into or out of 4-WHEEL LOW (4L) or
N (NEUTRAL):
1. Slow the vehicle to a roll, about 1 to 3 mph
(2 to
5 km/h) and shift the transmission into
NEUTRAL (N).
2. Shift the transfer case shift lever in one quick,
continuous motion.
Don’t pause in N
(NEUTRAL) as you shift the transfer
case into 4-WHEEL LOW (4L), or the gears could clash.
Remember that driving in 4-WHEEL HIGH (4H) or
4-WHEEL LOW (4L) may reduce fuel economy. Also,
driving in four-wheel drive on dry pavement could
cause your tires to wear faster and make your transfer
case harder to shift and run noisier.
When your headlamps or parking lamps are on, rotate
the thumb wheel next to the headlamp switch up
to
brighten, and down to dim your transfer case
indicator light.
2-22

Downloaded from www.Manualslib.com manuals search engine Instrument Cluster
CHECK GAGES
c7
lOlblolol TRIP lo 0 0 0 oolol APPLY BRAKE TO SHIFT FROM PARK
United States version shown, Canadian similar.
Your instrument cluster is designed to let you know at a glance how your vehicle is running. You’ll know how fast you’re
going, about
how much fuel you have and many other things you’ll need to know to drive safely and economically.
2-62

Downloaded from www.Manualslib.com manuals search engine Malfunction Indicator Lamp (Service
Engine Soon Light) (Gasoline Engine)
SERVICE
ENGINE
SOON
Your vehicle 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. (In Canada, OBD I1 is replaced by
Enhanced Diagnostics.) 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.
I 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:
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
is required.
0 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.
2-69

Downloaded from www.Manualslib.com manuals search engine If the Light Is Flashing If the Light Is On Steady
You may be able to correct the emission system
malfunction by considering the following:
The following
may prevent more serious damage to
your vehicle:
0 Reducing vehicle speed.
Avoiding hard accelerations.
0 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. 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.
2-70

Downloaded from www.Manualslib.com manuals search engine 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
80
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 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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