air condition CHEVROLET SUBURBAN 1997 Owners Manual

If something is between an occupant and an air
bag, the bag might not inflate properly or it
might force the object into that person. The path
of an inflating air bag must be kept clear. Don’t
put anything between an occupant and an air
bag, and don’t attach or put anything on the
steering wheel hub or on or near any other air
bag covering.
When should an air bag inflate?
An air bag is designed to inflate in a moderate to severe
frontal or near-frontal crash. The air bag will inflate
only if the impact speed is above the system’s designed
“threshold level.”
If your vehicle goes straight into a
wall that doesn’t move or deform, the threshold level is
about
9 to 16 mph (14 to 26 km/h). The threshold level
can vary, however, with specific vehicle design,
so that
it can be somewhat above or below this range.
If your
vehicle strikes something that will move or deform, such as
a parked car, the threshold level will be higher. The
air bag is not designed to inflate in rollovers, side
impacts or rear impacts, because inflation would not
help the occupant.
In any particular crash, no one can say whether an air
bag should have inflated simply because of the damage
to a vehicle or because
of what the repair costs were.
Inflation is determined by the angle of the impact and
how quickly the vehicle slows down in frontal
or
near-frontal impacts.
The air bag system is designed to work properly under
a wide range
of conditions, including off-road usage.
Observe safe driving speeds, especially on rough
terrain.
As always, wear your safety belt. See “Off-Road
Driving” in the Index for more tips on off-road driving.
What makes an air bag inflate?
In an impact of sufficient severity, the air bag sensing
system detects that the vehicle is in a crash. The sensing
system triggers a release of gas from the inflator, which
inflates the air bag. The inflator, air bag and related
hardware are all part of the air bag modules inside the
steering wheel and in the instrument panel in front
of the
right front passenger.
1-34
ProCarManuals.com

Adding Equipment to Your Air
Bag-Equipped Vehicle
e.’ If I add a push bumper or a bicycle rack to the
front of my vehicle, will it keep the air bags
from working properly?
A: As long as the push bumper or bicycle rack is
attached to your vehicle so that the vehicle’s basic
structure isn’t changed, it’s not likely to keep the
air bags from working properly in a crash.
e.’ Is there anything I might add to the front of the
vehicle that could keep the air bags from
working properly?
A: Yes. If you add things that change your vehicle’s
frame, bumper system, front end sheet metal or
height, they may keep the
air bag system from
working properly. Also, the
air bag system may not
work properly
if you relocate any of the air bag
sensors.
If you have any questions about this, you
should contact Customer Assistance before you
modify your vehicle. (The phone numbers
and
addresses for Customer Assistance are in Step Two of
the Customer Satisfaction Procedure in this manual.
See “Customer Satisfaction Procedure”
in the Index.)
What if I add a snow plow? Will it keep the air
bags from working properly?
A: We’ve designed our air bag systems to work
properly under a wide range of conditions,
including snow plowing with vehicles equipped
with the optional Snow Plow Prep Package
(RPO
VYU). But don’t change or defeat the snow
plow’s “tripping mechanism.” If
you do, it can
damage your snow plow and your vehicle, and it
may cause an air bag inflation.
1-37
ProCarManuals.com

After the engine starts, the light should go out. If it stays
on or comes on while you are driving,
you may have a
problem with your charging system. It could indicate a
problem with the generator drive belt, or some other
charging system problem. Have it checked right away.
Driving while this light is on could drain your battery.
If you must drive a short distance with this light on, it
helps to turn
off all your accessories, such as the radio
and the air conditioner.
Voltmeter
9 19
When your engine is not
running, but the ignition is
in the RUN position, 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.
2-66
ProCarManuals.com

Malfunction Indicator Lamp (Service
Engine Soon Light) (Gasoline Engine)
SERVICE
ENGINE
SOON
Your vehicle is equipped
with a computer which
monitors operation of the
fuel, ignition and emission
control systems.
This system is called OBD I1 (On-Board
Diagnostics-Second Generation) and is intended to
assure that emissions are at acceptable levels for the life
of the vehicle, helping
to produce a cleaner
environment. (In Canada, OBD I1 is replaced by
Enhanced Diagnostics.) The SERVICE ENGINE SOON
light comes on to indicate that there is a problem and
service is required. Malfunctions often will be indicated
by the system before any problem is apparent. This may
prevent more serious damage to your vehicle. This
system is also designed to assist your service technician
in correctly diagnosing any malfunction.
I NOTICE:
If you keep driving your vehicle with this light
on, after a while, your emission controls may not
work as well, your fuel economy may not be as
good and your engine may not run as smoothly.
This could lead
to costly repairs that may not be
covered by your warranty.
This light should come on, as a check to show you it is
working, when the ignition is on and the engine is not
running.
If the light doesn’t come on, have it repaired.
This light will also come on during a malfunction in one
of two ways:
0 Light Flashing -- A misfire condition has been
detected. A misfire increases vehicle emissions and
may damage the emission control system on your
vehicle. Dealer or qualified service center diagnosis
and service
is required.
0 Light On Steady -- An emission control system
malfunction has been detected on your vehicle.
Dealer or qualified service center diagnosis and
service may be required.
2-69
ProCarManuals.com

If the Light Is Flashing If the Light Is On Steady
You may be able to correct the emission system
malfunction by considering the following:
The following
may prevent more serious damage to
your vehicle:
0 Reducing vehicle speed.
Avoiding hard accelerations.
0 Avoiding steep uphill grades.
If you are towing a trailer, reduce the amount of
cargo being hauled as soon as it is possible.
If the light stops flashing and remains on steady, see “If
the Light
Is On Steady” following.
If the light continues to flash, when it is safe to do
so,
stop the vehicle. Find a safe place to park your vehicle.
Turn the key off, wait at least
10 seconds and restart the
engine. If the light remains on steady,
see “If the Light
Is On Steady” following. If the light is still flashing,
follow the previous steps, and drive the vehicle to your
dealer or qualified service center for service. Did
you recently put fuel into your vehicle?
If
so, reinstall the fuel cap, making sure to fully install
the cap. The diagnostic system can determine if the fuel
cap has been left off or improperly installed.
A loose or
missing fuel cap will allow fuel to evaporate into the
atmosphere. A few driving trips with the cap properly
installed should turn the light off.
Did you just drive through a deep puddle
of water?
If
so, your electrical system may be wet. The condition
will usually be corrected when the electrical system
dries
out. A few driving trips should turn the light off.
Are you low on fuel?
As your engine starts to run out of fuel, your engine may
not run as efficiently as designed since small amounts of
air
are sucked into the fuel line causing a misfire. The
system can detect this. Adding fuel should correct this
condition. Make sure to install the fuel cap properly.
It
will take a few driving trips to turn the light off.
2-70
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

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

To use the rear control, first turn the front control knob
to REAR CNTL. Then, the rear control can be used to
increase and decrease the airflow.
Rear Heater (Without Rear Air Conditioning)
(If Equipped)
If you have a rear
heater (without rear air
conditioning), the control switch
is located on the
instrument panel.
To increase and decrease the flow of heated air to the
rear floor vents, move the switch marked REAR HEAT
to the blower speed
you want.
The knob has three speed positions. To increase the
flow
of heated air, move the switch toward HIGH. To
decrease the flow of heated air, move it toward
LOW.
To turn the fan off, move the switch to OFF.
3-5
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