1999 CHEVROLET S10 climate control

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2-31
Engine Exhaust
CAUTION:
Engine exhaust can kill. It contains the gas
carbon monoxide (CO), which you can't see or
smell. It can cause unconsciousness and death.
You might have exhaust coming in if:

Your exhaust system sounds strange
or different.

Your vehicle gets rusty underneath.

Your vehicle was damaged in a collision.

Your vehicle was damaged when driving
over high points on the road or over
road debris.

Repairs weren't done correctly.

Your vehicle or exhaust system had been
modified improperly.
If you ever suspect exhaust is coming into
your vehicle:

Drive it only with all the windows down to
blow out any CO; and

Have your vehicle fixed immediately.
Running Your Engine While You're
Parked (Automatic Transmission)
It's better not to park with the engine running. But if
ever you have to, here are some things to know.
CAUTION:
Idling the engine with the climate control system
off could allow dangerous exhaust into your
vehicle (see the earlier Caution under
ªEngine Exhaustº).
Also, idling in a closed-in place can let deadly
carbon monoxide (CO) into your vehicle even if
the fan switch is at the highest setting. One place
this can happen is a garage. Exhaust
-- with
CO
-- can come in easily. NEVER park in a
garage with the engine running.
Another closed-in place can be a blizzard.
(See ªBlizzardº in the Index.)

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2-46 Convex Outside Mirror
A convex mirror's surface is curved so you can see more
from the driver's seat.
CAUTION:
A convex mirror can make things (like other
vehicles) look farther away than they really are.
If you cut too sharply into the right or left lane,
you could hit a vehicle. Check your inside
mirror or glance over your shoulder before
changing lanes.
Heated Outside Rearview Mirrors
(If Equipped)
Your vehicle may be
equipped with heated
outside rearview mirrors.
When you operate the
heated mirror button on
your climate control system,
the defogger will warm the
mirrors to help clear
them of ice, snow
or condensation.
Storage Compartments
Glove Box
To open your glove box, lift the lever on the front of the
glove box and lower the door. The glove box should not
be open while driving.
Door Storage
You will find a storage compartment on each door.

3-
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3-1
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.
3
-2 Comfort Controls
3
-2 Standard Climate Control System
3
-3 Optional Climate Control System
3
-4 Air Conditioning (If Equipped)
3
-4 Heating
3
-5 Defogging and Defrosting
3
-5 Ventilation System
3
-6 Audio Systems
3
-6 Setting the Clock for Systems with
SET Button
3
-6 Setting the Clock for Systems with HR and
MN Buttons
3
-7AM-FM Stereo3
-8AM-FM Stereo with Cassette Tape Player
(If Equipped)
3
-11 AM-FM Stereo with Cassette Tape Player and
Automatic Tone Control (If Equipped)
3
-15 AM-FM Stereo with Compact Disc Player and
Automatic Tone Control (If Equipped)
3
-19 Remote Cassette Tape Player (If Equipped)
3
-21 Theft-Deterrent Feature (If Equipped)
3
-23 Understanding Radio Reception
3
-23 Tips About Your Audio System
3
-24 Care of Your Cassette Tape Player
3
-25 Care of Your Compact Discs
3
-25 Care of Your Compact Disc Player
3
-25 Fixed Mast Antenna

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3-2
Comfort Controls
With these systems, you can control the heating, cooling
and ventilation in your vehicle.
Standard Climate Control System
Fan Control
The knob on the left side of the heating system control panel
controls the fan speed. To increase airflow, turn the knob
clockwise. To decrease airflow, turn it counterclockwise.
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. Turn the knob clockwise toward
the red area for warmer air. Turn 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.
OFF: This setting turns the system off. Some outside air
will still enter the vehicle whenever the vehicle is
moving forward.
VENT: 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.
BLEND: Airflow is divided equally between the
heater floor outlet and the windshield defroster outlets.
DEFROST: This setting directs most air through
the windshield defroster outlets and some through the
heater outlets.

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3-3 Optional Climate Control System
Fan Control
The knob on the left side of the heating system control
panel controls the fan speed. To increase airflow, turn
the knob clockwise. To decrease airflow, turn it
counterclockwise.
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. Turn the knob clockwise toward
the red area for warmer air. Turn 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.
OFF: This setting turns the system off. Some outside air
will still enter the vehicle whenever the vehicle is
moving forward.
MAX A/C: This setting provides maximum cooling
with the least amount of work. MAX A/C recirculates
much of the air inside your vehicle so it cools quickly.
This setting directs most of the air through the
instrument panel vents and a small amount through the
floor vents.
A/C: This setting cools the air entering your vehicle and
directs most of the air through the instrument panel
vents and a small amount through the floor vents.
BI-LEVEL A/C: This setting cools the air
entering your vehicle and directs it through the heater
floor outlets as well as the instrument panel outlets.
VENT: This setting directs most of the air through
the instrument panel outlets and a small amount through
the floor outlets. The air conditioning compressor is not
working when VENT is selected.

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6-48 Uniform Tire Quality Grading
The following information relates to the system developed
by the United States National Highway Traffic Safety
Administration, which grades tires by treadwear, traction
and temperature performance. (This applies only to
vehicles sold in the United States.) The grades are molded
on the sidewalls of most passenger car tires. The Uniform
Tire Quality Grading system does not apply to deep tread,
winter
-type snow tires, space-saver or temporary use spare
tires, tires with nominal rim diameters of 10 to 12 inches
(25 to 30 cm), or to some limited
-production tires.
While the tires available on General Motors passenger
cars and light trucks may vary with respect to these
grades, they must also conform to Federal safety
requirements and additional General Motors Tire
Performance Criteria (TPC) standards.
Treadwear
The treadwear grade is a comparative rating based on the
wear rate of the tire when tested under controlled conditions
on a specified government test course. For example, a tire
graded 150 would wear one and a half (1 1/2) times as well
on the government course as a tire graded 100. The relative
performance of tires depends upon the actual conditions of
their use, however, and may depart significantly from the norm due to variations in driving habits, service practices and
differences in road characteristics and climate.
Traction
-- AA, A, B, C
The traction grades, from highest to lowest, are AA, A,
B, and C. Those grades represent the tire's ability to stop
on wet pavement as measured under controlled
conditions on specified government test surfaces of
asphalt and concrete. A tire marked C may have poor
traction performance. Warning: The traction grade
assigned to this tire is based on straight
-ahead braking
traction tests, and does not include acceleration,
cornering, hydroplaning, or peak traction characteristics.
Temperature
-- A, B, C
The temperature grades are A (the highest), B, and C,
representing the tire's resistance to the generation of heat
and its ability to dissipate heat when tested under
controlled conditions on a specified indoor laboratory test
wheel. Sustained high temperature can cause the material
of the tire to degenerate and reduce tire life, and excessive
temperature can lead to sudden tire failure. The grade C
corresponds to a level of performance which all passenger
car tires must meet under the Federal Motor Vehicle Safety
Standard No. 109. Grades B and A represent higher levels
of performance on the laboratory test wheel than the
minimum required by law.

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9-2
Brakes
Adjustment 6-34 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Anti-Lock 4-7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Master Cylinder 6-31 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pedal Travel 6-34 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing System Parts 6-34 . . . . . . . . . . . . . . . . . . . . . . . .
Trailer 4-50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wear 6-33 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake-Transmission Shift Interlock Check 7-44 . . . . . . . . . . .
Braking 4-6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Braking in Emergencies 4-9 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Break-In, New Vehicle 2-12 . . . . . . . . . . . . . . . . . . . . . . . . . .
Brightness Control 2-43 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BTSI Check 7-44 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bulb Replacement 6-35, 6-67 . . . . . . . . . . . . . . . . . . . . . . . . .
Canadian Roadside Assistance 8-7 . . . . . . . . . . . . . . . . . . . .
Capacities and Specifications 6-67, 6-68 . . . . . . . . . . . . . . . . .
Carbon Monoxide 2-31, 4-39 . . . . . . . . . . . . . . . . . . . . . . . . .
Care of Your Cassette Tape Player 3-24, 7-42 . . . . . . . . . . . . .
Cassette Deck Service 7-42 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Center High-Mounted Stoplamp Bulb Replacement 6-39 . . . .
Center Passenger Position 1-31 . . . . . . . . . . . . . . . . . . . . . . . .
Certification/Tire Label 4-40 . . . . . . . . . . . . . . . . . . . . . . . . . .
Chains
Safety 4
-50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tire 6-50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Changing a Flat Tire 5-19 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Charging System Light 2-58 . . . . . . . . . . . . . . . . . . . . . . . . . .
Check Gages Light 2-65 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking Your Restraint Systems 1-52 . . . . . . . . . . . . . . . . . .
Chemical Paint Spotting 6-58 . . . . . . . . . . . . . . . . . . . . . . . . . . Child Restraints 1
-37 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Securing in the Right Front Seat Position 1-44 . . . . . . . . . .
Top Strap 1-42 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Where Not to Put 1-43 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cigarette Lighter 2-48 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Circuit Breakers and Fuses 6-62 . . . . . . . . . . . . . . . . . . . . . . .
Cleaner, Air 6-16, 6-70 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cleaning
Aluminum Wheels 6
-56 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fabric 6-52 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Glass 6-54 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inside of Your Vehicle 6-52 . . . . . . . . . . . . . . . . . . . . . . . . .
Instrument Panel 6-54 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interior Plastic Components 6-54 . . . . . . . . . . . . . . . . . . . . .
Leather 6-54 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Outside of Your Vehicle 6-55 . . . . . . . . . . . . . . . . . . . . . . . .
Safety Belts 6-54 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stains 6-53 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tires 6-57 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Vinyl 6-54 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Weatherstrips 6-55 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wheels 6-56 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Windshield and Wiper Blades 6-55 . . . . . . . . . . . . . . . . . . .
Climate Control System 3-2, 3-3 . . . . . . . . . . . . . . . . . . . . . . .
Clock, Setting 3-6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Clutch, Hydraulic 6-21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Comfort Controls 3-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Compact Disc Care 3-25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Compact Spare Tire 5-31 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Content Theft-Deterrent 2-10 . . . . . . . . . . . . . . . . . . . . . . . . .
Control of a Vehicle 4-6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Convex Outside Mirror 2-46 . . . . . . . . . . . . . . . . . . . . . . . . . .
Coolant 5-11, 6-26, 6-68 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .