1998 GMC ENVOY service

NOTICE:
If your key seems stuck in LOCK and you can’t
turn
it, be sure you are using the correct key; if
so, is it all the way in? If it is, then turn the
steering wheel left and right while you turn the
key hard. But turn the key only with your hand.
Using a tool to force it could break the key or the
ignition switch.
If none of this works, then your
vehicle needs service.
Retained Accessory Power
Your vehicle is equipped with a Retained Accessory
Power (RAP) feature which will allow certain features
on your vehicle to continue to work up to
20 minutes
after the ignition key
is turned to OFF.
Your radio, power windows, sunroof and overhead
console will work when the ignition key is in RUN or
ACCESSORY. Once the key is turned from RUN to
OFF, these features will continue to work for up to
20 minutes or until a door is opened.
Starting Your Engine
Move your shift lever to PARK (P) or NEUTRAL (N).
Your engine won’t start in any other position -- that’s a
safety feature.
To restart when you’re already moving,
use NEUTRAL (N) only.
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I NOTICE:
Don’t try to shift to PARK (P) if your vehicle is
moving.
If you do, you could damage the
transmission. Shift to
PARK (P) only when your
vehicle
is stopped.
1. Without pushing the accelerator pedal, turn your
ignition key to START. When the engine starts, let
go of the key. The idle speed will go down as your
engine gets warm.
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4LO: This setting also engages your front axle to give
you extra traction. You may never need 4LO. It sends
the maximum power to all four wheels.
You might
choose 4LO if you were driving off-road in sand, mud
or deep snow and climbing or descending steep hills.
Indicator lights in the switches show
you which setting
you are in. The indicator lights will come on briefly
when you turn on the ignition and one will stay on.
If the lights do not come on, you should take your
vehicle in for service. An indicator light will flash
while shifting. It will remain illuminated when the
shift is completed.
Shifting from 2HI to 4HI
Press and release the 4HI switch. This can be done at
any speed, and the front axle will lock automatically.
Shifting from 4HI to 2HI
Press and release the 2HI switch. This can be done at
any speed, and the front axle will unlock automatically.
Shifting from 2HI or 4HI to 4LO
To shift from 2HI or 4HI to 4L0, the vehicle must be
stopped
or moving less than 3 mph (4.8 kmh) with the
transmission
in NEUTRAL (N). The preferred method
for shifting into 4LO is to
have your vehicle moving 1 to
2 mph (1.6 to 3.2 kmh). Press and release the 4LO
switch. You must wait for the 4LO indicator light to stop
flashing and remain illuminated before shifting your
transmission into gear.
If the 4LO switch
is pressed when your vehicle is in
gear and/or moving,
the 4LO indicator light will flash
for
30 seconds and not complete the shift unless your
vehicle
is moving slower than 3 mph (4.8 kdh) and the
transmission is in NEUTRAL
(N).
If your transfer case does not shift into 4L0, your
transmission indicator switch may require adjustment.
With your transmission in NEUTRAL (N), press and
release the 4LO switch. While the 4LO indicator light
is
flashing, shift your transmission into PARK (P). Wait
until the 4LO indicator light remains illuminated before
shifting your transmission into gear. This will get you
into 4L0, but you should take your vehicle in for service
to restore normal operation.
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Shifting from 4LO to 4HI or 2HI
To shift from 4LO to 4H1 or 2H1, your vehicle must be
stopped or moving less than
3 mph (4.8 kdh) with the
transmission in NEUTRAL
(N). The preferred method
for shifting out of 4LO is to have your vehicle moving
1 to 2 mph (1.6 to 3.2 kdh). Press and release the 4HI
switch.
You must wait for the 4H1 indicator light to stop
flashing and remain illuminated before shifting your
transmission into gear.
If the 4HI switch is pressed when your vehicle is in gear
and/or moving, the 4HI indicator light will flash for
30 seconds but not complete the shift unless the vehicle
is moving slower than 3 mph (4.8 kmh) and the
transmission
is in NEUTRAL (N).
If your transfer case does not shift into 4H1, your
transmission indicator switch may require adjustment.
With your transmission in NEUTRAL
(N), press and
release the 4HI switch. While the 4HI indicator light is
flashing, shift your transmission into PARK
(P). Wait
until the 4HI indicator light remains illuminated before
shifting your transmission into gear. This will get you
into 4H1, but you should take your vehicle
in for service
to restore normal operation.
Windows
Power Windows
The controls for the power windows are on each of the
side doors. The switches control
the windows when the
ignition is on or when Retained Accessory Power (RAP)
is present. (See “Retained Accessory Power” in the
Index.) The driver’s door has
a switch to control the
passenger windows as well.
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Inflating something too much can make it
explode, and
you or others could be injured. Be
sure to read the inflator instructions, and inflate
any object only to its recommended pressure.
To use your air inflator, attach the appropriate nozzle
adapter, if required, to the end of the hose.
Then attach that end of
the
hose to the object you wish
to inflate. Remove
the
protective cap covering the
outlet. Attach
the other end
of
the hose to the outlet.
Press the
ON switch.
If the air inflator system does not turn on, the fuse may
be blown
or installed incorrectly. See “Fuses and Circuit
Breakers”
in the Index or see your dealer for service.
Your air inflator will automatically shut off after about
10 minutes. To reset, press the ON switch again.
Don’t
run your air inflator for longer than 30 minutes at
one time.
If you do, you may damage the system. After
30 minutes, wait at least 10 minutes before restarting the
air inflator.
To turn off the air inflator, press OFF and detach the
hose, first from the inflated object, then from the outlet.
Replace the protective cap. Place the inflator kit tools
in
the pouch and store it properly.
To replace the cover, line up the tabs at the back of the
cover and put
it in place.
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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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Erasing Ch; !lS
To erase all three programmed channels, hold down the
two outside buttons
until the red light begins to flash.
Individual channels cannot be erased, but can be
reprogrammed using the procedure for programming the
transmitter explained earlier.
Accessories
Accessories for the universal transmitter are available
from the manufacturer of
the unit. If you would like
additional information, please call
1-800-355-35 15.
Cellular Telephone (Option)
Your vehicle has been prewired for dealer installation of
a dual-mode (analog/digital) cellular telephone.
A fixed
mobile or a portable hand-held system is available.
Voice activation and hands-free operation are standard
features. For more information, contact your
GMC
dealer. A user’s guide is provided with the telephone.
Onstar@ System (Optional)
This system may be ordered if you have the optional
fixed cellular telephone. the following services are
available
24 hours a day:
0 Roadside Services with location
0 Emergency Services Button
Remote Door Unlock
0 Theft Detectionhlotification and Stolen-Vehicle
Tracking
0 Automatic Notification of Air Bag Deployment
ConciergeKustomer Convenience Services
For more information, contact your GMC dealer.
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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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Voltmeter Gage
I
When your engine is not
running, but the ignition is
on
(in RUN), 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.
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