engine CHEVROLET SUBURBAN 1997 User Guide

REVERSE (R): Use this gear to back up.
I
I I
I
I NOTICE:
Shifting to REVERSE (R) while your vehicle is
moving forward could damage your
transmission. Shift to REVERSE
(R) only after
your vehicle is stopped.
To rock your vehicle back and forth to get out of snow,
ice or sand without damaging your transmission, see
“Stuck: In Sand, Mud, Ice or Snow” in the Index.
NEUTRAL (N): In this position, your engine doesn’t
connect with the wheels. To restart when you’re already
moving, use NEUTRAL (N) only. Also, use
NEUTRAL (N) when your vehicle is being towed.
Shifting out of PARK (P) or NEUTRAL (N) while
your engine is “racing” (running at high speed) is
dangerous. Unless your foot is firmly on the
brake pedal, your vehicle could move very
rapidly. You could lose control and hit people or
objects. Don’t shift out of PARK
(P) or
NEUTRAL
(N) while your engine is racing.
NOTICE:
Damage to your transmission caused by shifting
out of PARK
(P) or NEUTRAL (N) with the
engine racing isn’t covered by your warranty.
ProCarManuals.com

Locking Rear Axle (If Equipped)
If you have this feature, your rear axle can give you
additional traction
on snow, mud, ice, sand or gravel. It
works like a standard axle most of the time, but when
one of the rear wheels has no traction and the other does,
the locking feature will allow the wheel with traction to
move the vehicle.
Four-wheel Drive
If your vehicle has four-wheel drive, you can send your
engine’s driving power to all four wheels for extra
traction.
To get the most satisfaction out of four-wheel
drive, you must be familiar with its operation. Read the
part that follows before using four-wheel drive. You
should use
2-WHEEL HIGH (2H) for most normal
driving conditions.
1 NOTICE: I
Driving in the 4-WHEEL HIGH (4H) or
4-WHEEL LOW (4L) positions for a long time
on dry or wet pavement could shorten the life of
your vehicle’s drivetrain.
Front Axle Locking Feature
The front axle locks and unlocks automatically when
you shift the transfer case. Some delay for the axle to
lock or unlock
is normal. If the outside temperature is
very hot, or the vehicle has been used under hard
driving conditions, there may be a slight delay for the
axle to unlock.
2-20
ProCarManuals.com

Shifting Into PARK (P)
r
It can be dangerous to get out of your vehicle if
the shift lever is not fully in
PARK (P) with the
parking brake firmly set. Your vehicle can roll.
If you have left the engine running, the vehicle
can move suddenly. You or others could be
injured. To be sure your vehicle won’t move, even
when you’re on fairly level ground, use the steps
that follow.
If’ you have four-wheel drive and
your transfer case is in
NEUTRAL (N), your
vehicle will be free to roll, even if your shift lever
is in PARK (P). So, be sure the transfer case is in
a drive gear -- not in NEUTRAL (N). If you’re
pulling a trailer, see “Towing a Trailer” in
the Index.
Steering Column Shift Lever
1. Hold the brake pedal down with your right foot and
set the
parking brake.
2. Move the shift lever into PARK (P) position like this:
0 Pull the lever toward you.
2-26
ProCarManuals.com

Move the lever up as far as it will go.
3. If you have four-wheel drive, be sure the transfer
case is in
a drive gear -- not in NEUTRAL (N).
4. Move the ignition key to LOCK.
5. Remove the key and take it with you. If you can
leave your vehicle with the ignition key in your
hand, your vehicle is in PARK (P).
Leaving Your Vehicle With the
Engine Running
It can be dangerous to leave your vehicle with the
engine running. Your vehicle could move
suddenly if the shift lever is not fully in PARK
(P)
with the parking brake firmly set. If you have
four-wheel drive with
a manual transfer case
shift lever and your transfer case is in
NEUTRAL (N), your vehicle will be free to roll,
even if your shift lever is in PARK
(P). So be sure
the transfer case is in a drive gear
-- not in
NEUTRAL (N). And, if you leave the vehicle with
the engine running, it could overheat and even
catch fire. You or others could be injured. Don’t
leave your vehicle with the engine running unless
you have to.
2-27
ProCarManuals.com

Parking Over Things That Burn Engine Exhaust
I A CAUl mON:
Things that can burn could touch hot exhaust
parts under your vehicle and ignite. Don’t park
over papers, leaves, dry grass or other things that
can burn. Engine exhaust
can kill. It contains the gas
carbon monoxide
(CO), which you can’t see or
smell. It can cause unconsciousness and death.
You might have exhaust coming in if:
Your exhaust system sounds strange
Your vehicle gets rusty underneath.
0 Your vehicle was damaged in a collision.
Your vehicle was damaged when driving over
high points on the road or over road debris.
Repairs weren’t done correctly.
Your vehicle or exhaust system had been
If you ever suspect exhaust is coming into
your vehicle:
0 Drive it only with all the windows down to
Have your vehicle fixed immediately.
or different.
modified improperly.
blow out any
CO; and
2-29
ProCarManuals.com

Running Your Engine While
You’re Parked
It’s better not to park with the engine running. But if
ever have to, here are some things to
know.
Idling the engine with the air system control off
could allow dangerous exhaust into your vehicle
(see the earlier Caution under “Engine Exhaust”).
Also, idling in a closed-in place can let deadly
carbon monoxide (CO) into your vehicle even if
the fan switch is
at the highest setting. One place
this can happen is
a garage. Exhaust -- with
CO
-- can come in easily. NEVER park in a
garage with the engine running.
Another closed-in place can be
a blizzard. (See
“Blizzard” in the Index.) It
can be dangerous to get out of your vehicle if
the shift lever is not fully in PARK
(P) with the
parking brake firmly set. Your vehicle can roll.
Don’t leave your vehicle when the engine is
running unless you have to.
If you’ve left the
engine running, the vehicle can move suddenly.
You or others could be injured.
,To be sure your
vehicle won’t move, even when you’re on fairly
level ground, always set your parking brake and
move the shift lever to PARK
(P).
If you have four-wheel drive and your transfer case is in
NEUTRAL
(N), your vehicle will be free to roll, even if
your shift lever is in PARK (P). So, be sure the transfer
case
is in a drive gear -- not in NEUTRAL (N). Always
set your parking brake. Follow the proper steps to be
sure your vehicle won’t move. See “Shifting Into
PARK (P)” in the Index.
If you’re pulling a trailer, see “Towing a Trailer” in
the Index.
2-30
ProCarManuals.com

Speedometer and Odometer
Your speedometer lets you see your speed in both miles
per hour (mph) and kilometers per hour
(km/h). Your
odometer shows how far your vehicle has been driven,
in either miles (used in the United States) or kilometers
(used in Canada).
Tamper-Resistant Odometer
Your odometer is tamper-resistant. The odometer will
show silver lines between the numbers if someone tries
to turn it back.
You may wonder what happens if your vehicle needs a
new odometer installed. Laws vary as to the procedure
that must be followed,
so check with your state or
provincial vehicle registration office. But generally, if
the new odometer can be set to the mileage total of the
old odometer, then it must be. But if it can’t, then it’s set
at zero, and a label must be put on the driver’s door to
show the old mileage reading when the new odometer
was installed.
Trip Odometer
The trip odometer can tell you how far your vehicle has
been driven since you last set the trip odometer to zero.
To reset the trip odometer, fully press the reset button
located near the trip odometer readout. If the reset
button is not fully pressed, the trip odometer may not go
all the way back to zero. If it doesn’t, you may have to
press the reset button again
to reset the readout to zero.
Tachometer
Your’tachometer displays the engine speed in
revolutions per minute (rpm).
2-63
ProCarManuals.com

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
55 seconds. If the driver’s
belt is already buckled,
neither the tone nor the light
will come on.
2-64
ProCarManuals.com

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
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 Warning Light
The charging system
warning light should come
on briefly when you turn on
the ignition, before starting
the engine, as a check to
show you it is working.
2-65
ProCarManuals.com

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 generator 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 the air conditioner.
Voltmeter
9 19
When your engine is not
running, but the ignition is
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.
2-66
ProCarManuals.com