GMC ENVOY 1998 Owners Manual

I A CAUTION:
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.
I
I NOTICE:
Damage to your engine from neglected oil
problems can be costly and
is not covered by
your warranty.
Security Warning Light
SECURITY
This light will come on
briefly when you turn the
key toward 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 dealer.
This light should also flash as you open
the door (if your
ignition is off).
This is a reminder to activate the
theft-deterrent system. See “Content Theft-Deterrent” in
the Index for more information.
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Service 4WD Light
SERVICE
4WD
This light should come on
briefly when you turn on the
ignition, as a check to show
you it is working.
The
SERVICE 4WD light comes on to indicate that
there may be a problem with the drive system and
service is required. Malfunctions can be indicated by the
system before any problem is apparent, which may
prevent serious damage
to the vehicle. This system is
also designed to assist your service technician in
correctly diagnosing a malfunction.
Check Gages Light
The CHECK GAGES light
CHECK
GAGES
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.
Gate Ajar Light
GATE
AJAR
This light will come on
briefly when
you are
starting the engine.
If it stays on, your liftgate
is ajar. Try closing the liftgate
again. Never drive with the liftgate even partially open.
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Fuel Gage
@ FUEL ONLY
When the ignition is on,
the fuel gage tells you
about how much fuel you
have remaining.
Here are four things that some
owners ask about. None
of these
show a problem with your fuel gage:
0 At the gas station, the gas pump shuts off before the
u gage reads FULL (F).
0 It takes a little more or less fuel to fill up than the
gage indicated. For example, the gage
may have
indicated the tank
was half full, but it ~t~ally took a
little more or less than half the tank’s capacity to fill
the tank.
The gage moves a little when you turn a corner or
The gage doesn’t go back to EMPTY (E) when you
speed up.
turn off the ignition.
Low Fuel Light
This light comes on when
the fuel tank
is low on fuel.
LOW
FUEL
TO turn it off, add fuel to the fuel tank. See “Fuel” in
the Index.
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Section 3 Comfort Controls and Audio Systems
In this section, you’ll find out how to operate the comfort control and audio systems offered with your vehicle. Be
sure to read about the particular systems supplied with your vehicle.
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Comfort Controls Electronic Climate Control System
Air Conditioning
Heating
Ventilation System
Defogging and Defrosting
Rear Window Defogger
Audio Systems Setting the Clock
AM-FM Stereo with Cassette
Tape Player 3- 12
3- 16
3-18
3-2 1
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3-23
3-24
3-26
3-26
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AM-FM Stereo with Compact Disc Player
(If Equipped)
Rear Seat Audio (RSA)
Console-Mounted CD Changer
Theft-Deterrent Feature
Understanding Radio Reception
Tips About Your Audio System
Care of Your Cassette Tape Player
Care
of Your Compact Discs
Care of Your Compact Disc Player
Fixed Mast Antenna
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I
Comfort Controls
With this system, you can control the heating, cooling
and ventilation in your vehicle.
AUTO: If the knob is in AUTO, the fan speed will vary
as the system maintains
the selected temperature.
Temperature Knob
Electronic Climate Control System
Fan Control
The knob on the left side of the climate control panel
controls the fan speed.
To manually increase airflow,
move the knob to the right. To manually decrease
airflow, move it to the left.
OFF: If the knob is in OFF, outside air will still enter
the vehicle, and will be directed based on the position of
the mode knob. The middle knob
on the control panel lets
you select the
desired air temperature in your vehicle. This knob will
allow you
to adjust the interior air temperature
independently of the function knob setting. Turn the
knob to the right toward 82 for warmer air. Turn the
knob to the left toward
66 for cooler air.
Full Hot: If you turn the temperature knob past 82°F
(2SoC), the system will
go into the “full hot” mode. The
system will remain at that maximum heating setting and
the
fan will blow at the speed the fan knob is set to. If
the fan is in AUTO, it will run at full speed.
Full Cold: If you turn the temperature knob past 66°F
(19” C), the system will go into the “full cold” mode.
The system will remain at that maximum cooling setting
and the fan will blow at the speed the fan knob is set to.
If the fan is in AUTO, it will run at full speed.
Choosing either maximum setting will not cause the
system to heat or cool any faster.
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Mode Knob - Automatic Operation
The right knob on the control panel allows you to
choose the direction of air delivery. When the system is
set for automatic operation, sensors will control the air
delivery mode.
Air will come primarily from the floor or
instrument panel outlets, with some air directed to the
windshield to prevent fogging.
When the system is in AUTO mode, the air conditioning
light will turn on, and the recirculation and outside air
lights turn
off. With the system in full auto control
(both the fan and mode knobs
in AUTO), you still have
the ability to override any function. However,
continually overriding the outside air or the
A/C
compressor will limit the ability of the system to cool
the vehicle quickly.
If you push a button for a function which is nor
available, the light next to that button will flash three
times to alert you that it’s not available.
To find your comfort zone, start with the
74°F (23 O C)
setting and allow about 20 minutes for the system to
adjust the temperature if necessary.
With the automatic setting, the
air conditioning compressor
automatically cycles when needed to cool the
air. In cold
weather, when the system senses the need for heat, the
airflow
will be directed out the floor outlets. As the interior temperature approaches the desired setting, the
blower speed will decrease. To maintain interior comfort,
the &ow will adjust between the instrument panel
air
outlets and floor outlets. On bright sunny days in cool
weather, the alrflow may come out
of the air conditioning
and floor outlets (bi-level mode) to maintain comfort and
prevent stuffiiess.
To avoid blowing cold
air in cold weather, the system will
delay turning on the fan until warm
air is available. The
length of delay depends on the outside
air temperature,
engine coolant temperature or the time since the engine was last started.
As the coolant warms up, the blower fan
speed will gradually increase and
air will flow from the
heater outlets, with some airflow to
the windshield to
prevent fogging under most normal conditions.
If your vehicle is sitting out on a warm day and you
have the fan set on AUTO, the air will first flow out of
the floor air outlets
for a few seconds. That is normal.
This is to expel hot air from the air outlets.
As the air is
cooled, the airflow will move through the
air
conditioning outlets.
Be careful not to put anything over the solar sensor
located around the center of the instrument panel.
This sensor is used by the automatic system to
regulate temperature.
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Mode Knob - Manual Operation
The right knob on the control panel allows you to
choose the direction
of air delivery.
You can choose to set the climate control system
operations yourself, or let the system work for you by
placing the system
in AUTO mode. See “Mode
Knob
- Automatic Operation” earlier in this section.
/J PANEL: This setting directs most of the air
through the instrument panel outlets and a small amount
through the floor outlets.
’@ BI-LEVEL: Air is delivered through the heater
floor outlets as well as the instrument panel outlets.
+# HEATER: This setting directs most of the
warmed air through the heater floor outlets and some air
through the windshield defroster outlets.
‘/J BLEND: Airflow is divided equally between the
heater floor outlet and the windshield defroster outlets.
The air conditioning compressor may run
to dehumidify
the air to prevent window fogging.
+0
-bo
0
WO
DEFROST This setting directs most air through
the windshield defroster outlets and some through the
heater outlets. The air conditioning compressor may
run
to dehumidify the air to prevent window fogging.
a OUTSIDE AIR: Press this button to force the
system to
use outside air. Press it again to close off the
outside air.
Pressing the
OUTSIDE AIR button will cancel the
RECIRCULATION button.
RECIRCULATION: Press this button to limit
the amount
oi’ fresh air entering your vehicle. This is
helpful when
you are trying to limit odors entering your
vehicle. In the AUTO mode, the system will use
recirculation as necessary to cool
the air. Pressing the
recirculation button will change the operation to
a
manual mode and the air will recirculate non-stop.
RECIRCULATION may be selected
with the fan control
in OFF to limit odors, outside air and dust from entering
your vehicle.
Pressing the RECIRCULATlON button will cancel the
OUTSIDE AIR button.
a A/C: Press this button to turn the air conditioning
on and off. The system will cool and dehumidify the air
inside the vehicle
when the A/C light is on.
Air conditioning will be automatically disabled when
the outside temperature drops below a level which air
conditioning is ineffective.
Remember that
in order for the automatic system to perform
well,
it needs A/C to provide cooling performance.
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Air Conditioning
On hot days, open the windows long enough to let hot
inside air escape. This reduces the time
it takes for your
vehicle to cool down. Then keep your windows closed
for the air conditioner to work its best.
Heating
For quick cool-down on very hot days, A/C should be
enabled with the temperature knob turned
to the left and
the OUTSIDE
AIR button should not be active. This
setting should be used to keep odors and/or dust from
entering the vehicle. For normal cooling on hot days,
use
A/C with the temperature knob turned to the left.
On cool but sunny days, use BI-LEVEL
A/C to deliver
warm air to the floor and cooler air to the instrument
panel outlets.
When the air conditioner is on, you may sometimes
notice slight changes
in your vehicle’s engine speed
and power.
This is normal because the system is
designed to cycle the compressor on and off to keep the
desired temperature. The heater
works best
if you keep your windows closed
while using it.
On cold days, use HEATER with the
temperature knob turned
to the right. BLEND is useful
in cool weather when
you have fog or ice on the
windshield
or side windows.
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 System
For mild outside temperatures when little heating or
cooling is needed, use PANEL with the OUTSIDE
AIR
button enabled to direct outside air through your vehicle.
Airflow is through the instrument panel outlets.
Your vehicle’s ventilation system supplies outside air to
the inside
of your vehicle when it is moving. When the
vehicle is not moving, you can get outside air to flow
through by selecting
any mode and any fan speed.
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Ventilation Tips
You will find air outlets in the center and on the sides of
your instrument panel.
You can direct the airflow side-to-side by rotating the
thumbwheel located in the center of the vent. The vent
can be tilted up and down also.
To control the amount of
airflow through the outlets, rotate the thumbwheel
below the vent.
0
e
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, move the
fan control to the right
to the highest setting 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.
Defogging and Defrosting
On cool, humid days, use BLEND to keep the
windshield and side windows clear.
Use DEFROST
to remove fog or ice from the
windshield quickly in extreme humid or cold conditions.
Turn the temperature knob to the right and move the fan
control
to the right.
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Rear Window Defogger
The lines you see on
the rear window warm
the glass.
For best results, clear the window of as much snow or
ice
as possible before using the rear window defogger.
To turn on the rear window defogger, find the button
marked REAR with the defog symbol
on the lower right
corner of your climate control system. Press
the button
until the light in the switch comes on, then release it. It
will only work
if the ignition switch is turned to RUN.
Pressing the REAR button on your climate control
system will also activate your heated outside mirrors.
This will help to keep ice and snow from collecting
on
your mirror surfaces.
The rear window defogger will stay on for five
to seven
minutes, then turn
off. If you need additional warming
time, turn it on again. You can turn the defogger off at
any time by pressing the button.
Do not attach a temporary vehicle license, tape or decals
across the defnqger grid on
the rear window.
NOTICE:
Don’t use a razor blade or something else sharp
on the inside of the rear window. If you do, you
could cut or damage the warming grid, and the
repairs wouldn’t be covered by your warranty.
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