engine GMC ENVOY 1998 User Guide

Page 80 of 386

NEUTRAL (N): In this position, your engine doesn’t
connect with the wheels.
To restart when you’re already
moving, use
NEUTRAL (N) only.
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.
ml
I 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. DRIVE
(D):
This position is for normal driving. If you
need more power for passing, and you’re:
0 Going less than about 35 mph (55 krdh), push your
accelerator pedal about halfway down.
Going about 35 mph (55 krdh) or more, push the
accelerator all the way down.
You’ll shift down
to the next gear and have more power.
DRIVE
(D) should not be used when towing a trailer,
carrying a heavy load, driving on steep hills, or for
off-road driving. Select THIRD
(3) when operating the
vehicle under any of these conditions.
THIRD (3): This position is also used for normal
driving, however it offers more power and lower fuel
economy than DRIVE (D).
You should use THIRD (3)
when towing a trailer, carrying a heavy load, driving on
steep hills or winding roads or for off-road driving.
SECOND (2): This position gives you more power but
lower fuel economy than
THIRD (3). 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.
You can also use SECOND
(2) for starting your vehicle
from a stop
on slippery road surfaces.
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Page 82 of 386

NOTICE:
Driving with the parking brake on can cause
your rear brakes to overheat.
You may have to
replace them, and you could also damage other
parts of your vehicle.
If you are towing a trailer and you must park on a hill,
see “Towing
a Trailer” in the Index. That section shows
what to do first to keep the trailer from moving.
Shifting Into PARK (P)
L
I
L!h CAUTL .:
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. Always put the shift lever fully in
PARK
(P) with the parking brake firmly set. If
you’re pulling a trailer, see “Towing a Trailer” in
the Index.
1. Hold the brake pedal down with your right foot and
set the parking brake.
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Page 83 of 386

2. Move the shift lever into PARK (P) position
like this:
Hold in the button on the lever.
Push the lever all the way toward the front of
the vehicle.
3. Turn the ignition key to LOCK,
4. Remove the key and take it with you. If you can
leave your vehicle with the key, 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. 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.
If you have to leave your vehicle with the engine
running, be sure your vehicle is in PARK (P) and your
parking brake is firmly set before
you leave it. After
you’ve moved the shift lever into PARK
(P), hold the
regular brake pedal down. Then, see if you can move the
shift lever away from PARK
(P) without pressing the
button
on the shift lever. If you can, it means that the
shift lever wasn’t fully locked into PARK
(P).
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Page 85 of 386

P -ing Over nqs That Burn Engine Exhaust
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. or different.
0 Repairs weren't done correctly.
0 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
0 Have your vehicle fixed immediately.
modified
improperly.
blow
out any CO; and
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Page 86 of 386

Running Your Engine While
You’re Parked
It’s better not to park with the engine running. But if
ever you have to, here
are some things to know.
A CAUTION:
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
L6BlizzardSS 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).
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.
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Page 87 of 386

Locking Rear Axle
Your locking 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, this feature
will allow the wheel with traction to move the vehicle.
Four-wheel Drive
Because your vehicle has four-wheel drive, you can
send your engine’s driving power to all four wheels for
extra traction.
To shift out of two-wheel drive and into
four-wheel drive, push the
4HI or 4LO button on the
transfer case switch. You should use
2HI for most
normal driving conditions.
Driving in the 4HI or 4LO positions for a long
time on dry
or wet pavement could shorten the
life
of your vehicle’s drivetrain.
Electronic Transfer Case
The transfer case switches
are above the radio controls.
Use
these switches to shift into and out of four-wheel
drive.
You can choose among three driving settings:
2HI: This setting is for driving in most street and
highway situations. Your front axle is not engaged in
two-wheel drive.
4HI: This setting engages your front axle to help drive
your vehicle. Use
4HI when you need extra traction,
such as on snowy or icy roads, or in most
off-road situations.
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Page 115 of 386

This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
(1) this device may not cause harmful interference,
and
(2) this device must accept any interference
received, including interference that may cause
undesired operation.
This device complies with
RSS-2 10 of Industry Canada.
Operation
is subject to the following two conditions:
(1) this device may not cause interference, and (2) this
device must accept any interference, including
interference that may cause undesired operation of
the device.
Changes and modifications to this system by other than
an authorized service facility could void authorization to
use this equipment.
Programming the Transmitter
Do not use the transmitter with any garage door opener
that does not have the “stop and reverse” feature. This
includes any garage door opener model manufactured
before April
1, 1982.
Be sure that pe~ple arid objects Lire clear of the garclge
door- you ~1-e Iwogmmning!
Your vehicle’s engine should be turned off while
programming the transmitter. Follow these steps to
program up to three channels:
1. If you have not previously programmed a universal
channel, proceed to Step
2. Otherwise, hold down
the two outside buttons
on the universal transmitter
until the red light begins to flash rapidly
(approximately
20 seconds). Then release the
buttons. This procedure initializes the memory and
erases any previous settings for all three channels.
2. Hold the end of the hand-held transmitter against the
bottom surface
of the universal transmitter so that
you can still see the red light.
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Page 122 of 386

Speedometer and Odometer
Your speedometer lets you see your speed in both miles
per hour (mph) and kilometers per hour (kdh).
Your odometer shows how far your vehicle has been
driven,
in either miles (used in the United States) or
kilometers (used in Canada).
You may wonder what happens if your vehicle needs a
new odometer installed.
If the new one 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 view the trip odometer, press the button near the
readout.
To reset the trip odometer, hold the button until
it resets.
Tachometer
The tachometer displays the engine speed in revolutions
per minute
(rpm).
Each tachometer has a different limit depending on the
powertrain in your vehicle. The tachometer has three
areas: normal operating range, red warning range and
red danger range.
The normal operating range shows your engine speed
during normal driving conditions. For example, when
the needle points to
2, it means the engine is running at
2,000 revolutions per minute (rpm). The tachometer
needle will vary all the time that the engine
is running.
The shaded red warning range
tells you that your engine
speed is reaching its upper limits. Don’t drive very long
with the tachometer
in the red warning range. Lift your
foot off
the accelerator pedal.
The solid red danger range tells
you that your engine
speed is at its upper limits. You should immediately
shift to a higher gear, or lift your foot
off the
accelerator pedal.
I I
NOTICE:
Do not operate the engine with the tachometer in
the red range, or engine damage
will occur.
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Page 123 of 386

1 ing 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 chime 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 chime
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
the air bag symbol. 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.
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 Indicator Light
The charging system light
will come on briefly when
you turn on the ignition, but
’ the engine is not running,
as a check to show you it
is working.
It should go out once the engine
is running. If it stays
on, or comes on while you are driving, you may have a
problem with the charging system.
It could indicate that
you have problems with
a generator drive belt, or
another electrical problem. Have
it checked right away.
Driving while this light
is on could drain your battery.
If you must drive a short distance with the light on, be
certain to turn off all your accessories, such as the radio
and air conditioner.
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