1998 GMC ENVOY heating

Resynchronization Resynchronization may be necessary due to the security
method used by this system. The transmitter does not
send the
same signal twice to the receiver. The receiver
will
not respond to a signal it has been sent previously.
This prevents anyone
from recording and playing back
the signal from the transmitter.
To resynchronize your transmitter, stand close to your
vehicle and press and hold the LOCK and UNLOCK
buttons on the transmitter at the same time for seven
seconds. The door locks should cycle to confirm
synchronization.
If the locks do not cycle. see your
dealer for service.
LiftgateLiftglass
It can be dangerous to drive with the liftgate or
liftglass open because carbon monoxide (CO) gas
can come into your vehicle. You can’t see or smell
CO. It can cause unconsciousness and even death.
If‘ you must drive with the liftgate or liftglass
open or if electrical wiring or other cable
connections must pass through the seal between
the body and the liftgate
or liftglass:
Make sure all windows are shut.
Turn the fan on your heating or cooling
system to its highest speed with the setting
on any airflow selection except
RECIRCULATION. That will force outside
air into your vehicle. See “Comfort
Controls” in the Index.
If you have air outlets on or under the
instrument panel, open them
all the way.
See “Engine Exhaust” in the Index.
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NOTICE:
Don’t hold a cigarette lighter in with your hand
while
it is heating. If you do, it won’t be able to
back away from the heating element when it’s
ready. That can make it overload, damaging the
lighter and the heating element.
There is a smaller ashtray in the rear of the center
floor console.
Sun Visors
To block out glare, you can swing down the top and
bottom visors
(if your vehicle has them). You can also
swing the bottom visor from side-to-side. Your visors
may have an extension that can be pulled out for
additional glare protection and a strap for holding small
items, such
as maps.
Illuminated Visor Vanity Mirror
Pull the sun visor down and lift the mirror cover to turn
on the lamps.
Accessory Inflator
Your vehicle is equipped with an air inflator system.
With
it, you can inflate things like air mattresses and
basketballs, and you can also use it to bring your tires up
to the proper pressure.
The air inflator is located in
the rear compartment on the
passenger’s side
of the
vehicle.
To remove the
cover, pull the tab on the
cover and pull
it off’.
The air inflator kit
is stored in the rear compartment of
your vehicle. It includes a I %foot (5.5 m) hose with
three nozzle adapters.
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Anti-Lock Brake System Warning Light
With the anti-lock brake
system, this light will come
on when you start your
engine and may stay
on
for several seconds.
That’s normal.
If the light stays on, or comes on when you’re driving,
your vehicle needs service. If the regular brake system
warning light isn’t on,
you still have brakes, but you
don’t have anti-lock brakes. If the regular brake system
warning light is
also on, you don’t have anti-lock brakes
and there’s a problem with your regular brakes. See
“Brake System Warning Light” earlier
in this section.
The anti-lock brake system warning light should come
on briefly 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.
Engine Coolant Temperature Gage
This gage shows the engine
coolant temperature. If the
gage pointer moves into
the
red area, your engine is
too hot!
It means that your engine coolant has overheated. If you
have been operating your vehicle under normal driving
conditions,
you should pull off the road, stop your
vehicle and turn off
the engine as soon as possible.
The “Problems on the Road” section
of this manual
shows you what to do. See “Engine Overheating”
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
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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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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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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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Driving with a Trailer
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If you have a rear-most window open and you
pull a trailer with your vehicle, carbon monoxide
(CO) could come into your vehicle. You can’t see
or smell
CO. It can cause unconsciousness or
death. (See ‘(Engine Exhaust” in the Index.) To
maximize your safety when towing a trailer:
Have your exhaust system inspected for
leaks, and make necessary repairs before
starting on your trip.
Keep the rear-most windows closed.
If exhaust does come into your vehicle
through a window in the rear or another
opening, drive with your front, main
heating or cooling system on and with the
fan on any speed. This will bring fresh,
outside air into your vehicle.
Do not use
RECIRCULATION because it only
recirculates the air inside your vehicle. (See
“Comfort Controls” in the Index.)
Towing a trailer requires a certain amount of experience, ~
Before setting out for the open road, you’ll want to get
to know your rig. Acquaint yourself with the feel of
handling and braking with the added weight of the
trailer. And always keep in mind that the vehicle you
arc
driving is now a good deal longer and not nearly as
responsive as your vehicle is by itself.
Before you
start, check the trailer hitch and platform
(and attachments), safety chains, electrical connector,
lamps, tires and mirror adjustment. If the trailer has
electric brakes, start your vehicle and trailer moving and
then apply the trailer brake controller by hand to be sure
the brakes are working. This lets you check your
electrical connection at the same time.
During your trip, check occasionally to
be sure that the
load is secure, and that the lamps and any trailer brakes
are still working.
Following Distance
Stay at least twice as far behind the vehicle ahead as you 1
would when driving your vehicle without a trailer. This
can help you avoid situations that require heavy braking
and sudden turns.
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Driving On Grades
Reduce speed and shift to a 1owe.r gear Iwfow you start
down a long or steep downgrade.
If you don’t shift
down. you might have to use your brakes
so much that
they would get hot and no longer work well.
On
a long uphill grade, shift down and reduce your
speed to around
45 mph (70 km/h) to reduce the
possibility of engine and transmission overheating.
You should use DRIVE
(D) when towing a trailer.
Operating your vehicle
in DRIVE (D) when towing a
trailer
will minimize heat buildup and extend the life of
your transmission.
When towing at high altitude
on steep uphill grades,
consider the following: Engine coolant
will boil at a lower
temperature than at normal altitudes.
If you twn your
engine off imnlediately after towing at high altitude on
steep uphill grades, your vehicle may show signs similar to
engine overheating.
To avoid this, let the engine run while
parked (preferably on level ground)
with the automatic
transmission
in PARK (PI for a few minutes before turning
the engine off.
If you do get the overheat warning. see
”Engine Overheating”
in the Index.
Parking on Hills
You really should not park your vehicle, with a trailer
attached.
on a hill. If‘ something goes wrong, your rig
could start
to move. People can be injured, and both
your vehicle and the trailer can be damaged.
But
if you ever have to park your rig on a hill, here‘s
how
to do it:
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3.
4.
5.
Apply your regular brakes, but don’t shift into
PARK
(P) yet. Then turn your wheels into the curb
if facing downhill or into traffic if facing uphill.
Have someone place chocks under the trailer wheels.
When the wheel chocks are
in place, release the
regular brakes
until the chocks absorb the load.
Reapply the regular brakes. Then apply your parking
brake, and then shift into PARK
(P).
Release the regular brakes.
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