heating CHEVROLET SUBURBAN 1997 Owners Manual

It can be dangerous to drive with the tailgate
glass, tailgate or rear doors 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 tailgate glass, tailgate
or rear doors open or if electrical wiring or other
cable connections must pass through the seal
between the body and the tailgate glass, tailgate
or rear doors:
Make sure all windows are shut.
firn the fan on your heating or cooling
system to its highest speed with the setting
on VENT. That will force outside air into
your vehicle. See “Comfort Controls” in
the Index.
instrument panel, open them all the
way.
If you have air outlets on or under the
See “Engine Exhaust” in the Index.
Tailgate Glass and Tailgate
If your vehicle has a tailgate, you must raise the rear
glass before lowering the tailgate.
To open the glass from the outside, use your key. With
the key
in the lock, turn the key clockwise to release the
glass, then lift it up.
To release the glass from the inside, use the electric
tailgate glass release switch on the instrument panel. For
more information, see “Tailgate
-- Electric Glass
Release” in the Index.
To open the tailgate, lift up on the handle while pulling
the tailgate toward you.
Close the tailgate before closing the rear glass. After
closing the tailgate, make sure the tailgate is securely
latched by pulling it toward
you. After closing the rear
glass, pull up on its handle to make sure it is locked.
2-9
ProCarManuals.com

Your vehicle has a Center High-Mounted Stoplamp
(CHMSL) located above the tailgate glass or above the
rear load doors.
If items are loaded on the roof of the vehicle, care
should be taken not to block or damage the
CHMSL unit.
Ashtrays and Cigarette Lighter
Front Ashtray
The front ashtray is located at the bottom of the
instrument panel. Pull
on the notch in the ashtray
door to open it.
I NOTICE: 1
If you store paper or other things that burn in
your ashtrays, they could be set on fire by
cigarettes
or other smoking materials. That could
cause
a fire and possibly damage your vehicle. Do
not store papers and other things that burn in
your ashtrays.
To remove the front ashtray, press the retainer spring
and pivot the ashtray toward you.
To replace the ashtray,
place the bottom part of the ashtray on the pivot bar at
the bottom of its mounting on
the instrument panel.
Then rotate the ashtray back to its original position.
Rear Ashtray
To use a rear ashtray, if you have them, pull at the top of
the ashtray door to
flip the door open.
To remove a rear ashtray, press down on the inside tabs
and open
the door fully.
To use the cigarette lighter, push it in all the way, and let
go. When it's done heating, it will pop back by itself.
FOTICE:
Holding a'cigarette lighter in with your hand
while it is heating can make it overload,
damaging the lighter and the heating element.
Just push the lighter all the
way in and let go.
When it's done heating, it
will pop back by itself.
2-58
ProCarManuals.com

Anti-Lock Brake System Warning Light
With the anti-lock brake
system, this light will come
ANTI -
LOCK
on when you start your
engine and may stay on for
several seconds.
That’s normal.
Engine Coolant Temperature Gage
This gage shows the engine
coolant temperature.
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.
It also provides an indicator of how hard your vehicle is
working. During a majority of the operation, the gage
will read
2 10 OF ( 100 ” C) or less. If you are pulling a
load or going up hills, it is normal for the temperature
to
fluctuate and approach the 260 OF( 160” C) mark. If the
gage reaches the
260”F( 160°C) mark, it indicates that
the cooling system
is working beyond its capacity.
In “Problems on the Road,” this manual shows what to
do. See “Engine Overheating” in the Index.
2-68
ProCarManuals.com

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.
I 3-15
3-2
3-4
3-7
3-8
3-8
3- 10
3- 10
3-11
3-11
3-11 3-11
3-13 Comfort
Controls
Rear Comfort Controls
Air Conditioning
Heating
Ventilation System
Defogging and Defrosting
Rear Window Defogger
Audio Systems Setting the Clock
AM-FM Stereo Radio
Playing the Radio
AM-FM Stereo with Cassette Tape Player
3- 19
3-20
3-24
3-26 3-28
3-28
3 -29
3-30
3-30 AM-FM
Stereo with Cassette Tape and
Automatic Tone Control
CD Adapter Kit
AM-FM Stereo with Compact Disc Player and
Automatic Tone Control
Playing a Compact Disc in the Single Remote
Disc Player
Theft-Deterrent Feature
Understanding Radio Reception
Tips About Your Audio System
Care of Your Cassette Tape Player
Care of Your Compact Discs
Fixed Mast Antenna
ProCarManuals.com

Comfort Controls
Heater Control System
Fan Knob
The knob on the left side of the heating system control
panel controls the fan speed. The knob has four speed
positions. To increase aifflow, move the knob toward
HI. To decrease aifflow, move it toward LO. To turn the
fan off, move the knob to
OFF.
Temperature Knob
The middle knob on the control panel lets you select the
relative temperature of the air flowing into the passenger
area
of your vehicle. This knob will allow you to adjust the
relative air temperature independently of the function
knob setting. Move the knob clockwise toward the red
area for warmer air. Move
the knob counterclockwise
toward the blue area for cooler air.
Mode Knob
The right knob on the control panel allows you to
choose the direction
of air delivery. The control knob
can be placed in any position between any two mode
settings to blend the flow
of air.
+.
fl VENT This setting directs air through the
instrument panel outlets.
+# VENT/HEAT Use this setting to divide airflow
*e
between the floor outlets and instrument panel outlets.
0
+fl HEATER: This setting directs air through the
floor outlets.
+# DEFOG: This setting directs air to the heater
outlets and toward the windshield.
w.
DEFROST This setting directs air toward
the windshield.
3-2
ProCarManuals.com

Heater and Air Conditioning Control
System
(If Equipped)
Fan Knob
The knob on the left side of the heating system control
panel controls the fan speed. The knob has four speed
positions.
To increase airflow, move the knob toward
HI. To decrease airflow, move it toward LO. To turn the
fan off, move the knob to OFF.
If you have the air
conditioner on, moving the fan knob to OFF also turns
off the
A/C compressor.
In OFF, while driving, ram airflow will vent to the floor
outlets. The mode knob will not redirect ram airflow to
other selected outlet positions. This is normal operation
for the OFF position.
Temperature Knob
The middle knob on the control panel lets you select the
relative temperature
of the air flowing into the passenger
area
of your vehicle. This knob will allow you to adjust
the relative air temperature independently
of the function
knob setting. Move the
knob clockwise toward the red
area for warmer air. Move the knob counterclockwise
toward
the blue area for cooler air.
Mode Knob
The right knob on the control panel allows you to
choose the direction
of air delivery. The control knob
can be placed in any position betweeri any two mode
settings
to blend the flow of air.
# VENT This setting directs air through the
instrument panel outlets.
+’ VENTBEAT Use this setting to divide airflow
between the floor outlets and instrument panel outlets.
+’ HEATER: This setting directs air through the
+e
+e
e
floor outlets.
+’ DEFOG: This setting directs air to the heater
outlets and toward the windshield.
w.
DEFROST This setting directs air toward
the windshield.
3-3
ProCarManuals.com

Rear Air Conditioning and Heating Systems
(If Equipped)
If your vehicle has one of these systems, you can
increase and decrease the airflow at the rear vents.
Depending on the system you have and the setting
selected, you can send cooled or heated air to the rear
of the vehicle.
Rear Air Conditioning (Without Rear Heater)
(If Equipped)
If your vehicle has rear air conditioning (without rear
heater), the controls are located above the front and second seats. The front and rear overhead controls let
you increase and decrease the airflow at the rear vents.
To operate the rear air conditioning system, the front air
conditioning system must be on. With the front air
conditioning system off, the rear system controls can be
used to circulate air in the rear
of the vehicle. To
operate the rear system using the front control, just
turn the knob to the blower position you want.
3-4
ProCarManuals.com

Rear Air Conditioning and Rear Heater
(If Equipped)
If your vehicle has the rear air conditioning and rear
heater system combination, controls are provided to
regulate temperature, location and speed of the airflow. For warmer air, turn
the knob clockwise toward the red.
and for cooler air, turn the knob counterclockwise. To regulate the airflow location, adjust the center knob
on the control panel.
Turn the knob clockwise for floor
vent airflow or counterclockwise for headliner vent
airflow. Generally, the upper vents are used for air
conditioning and the floor vents for heating. The control
knob can be set to any blend setting.
To adjust the aifflow speed, turn the fan control knob
on the left side of the control panel to the desired
blower setting.
To activate the rear control, move the fan knob on the
front control to
REAR CNTL.
To adjust the air temperature, turn the temperature knob
on the right of the control panel.
3-6
ProCarManuals.com

Heating Ventilation System
The heater works best if you keep your windows closed
while using it. On cold days, use the HEATER or
VENT/HEAT setting with the temperature knob in
the
red area.
If you use the engine coolant heater before starting your
engine in cold weather,
20°F (-8 O C) or lower, your
heating system will produce warmer air faster, to heat
the passenger compartment in cold weather.
The use
of an engine coolant heater also reduces the
time it takes for the engine to reach normal operating
temperature, and shortens the time it takes the heater to
reach full output. For more information, see “Engine
Coolant Heater” in the Index. For
mild outside temperatures when little heating or
cooling is needed, use VENT to direct outside air
through your vehicle. Air will flow through the
instrument panel outlets.
Your vehicle’s ventilation system supplies outside air
to the inside of your vehicle when it is moving. With
the side windows closed, air will flow into the front
air inlet grilles, through the vehicle, and out the air
exhaust valves.
Outside air will also enter the vehicle when the heater or
the air conditioning fan
is running, unless you have the
recirculation button pushed
in. For more information on
the recirculation button, see
“Air Conditioning” earlier
in this section.
ProCarManuals.com

Ventilation Tips
Your vehicle has air outlets in the center and on the sides
of your instrument panel. You can move the outlets from
side to side or up and down to direct the flow of air, or
close the outlets altogether. When you close
an outlet, it
will increase the flow
of air coming out of any outlets
that are open. These outlets do not completely shut off
airflow when in a closed vent position.
0
0
0
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, turn the
blower fan to
HI for a few moments before driving.
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.
The use of hood air deflectors may adversely
affect the performance of the heating and air
conditioning system.
3-9
ProCarManuals.com