1973 CHEVROLET MONTE CARLO air conditioning

Downloaded from www.Manualslib.com manuals search engine STARTING AND OPERATING
Engine Exhaust Gas Caution (Carbon Monoxide)
Allold inhaling exhaust gases because
they contain carbon monoxide, which by
Itsell is colorless and odorless. Carbon
monoxide is a dangerous gas that can cause unconsciousness and is potentially
lethal.
II at any time you suspect that exhaust fumes are entering the passenger com­partment, have the cause determined and corrected as soon as possible. II you must
drive under these conditions, drive only
with
all windows fully open.
The best protection against carbon
mon­oxide entry into the car body is a properly
maintained exhaust system, car body and body ventilation system. It is recom­mended that the exhaust system and body
be inspected by a competent mechanic:
• Each time the IIehicie is raised for oil change. > •
Wheneller a change
is noticed In the
sound of the exhaust system.
• Wheneller the exhaust system, under­
body or rear of the vehicle is damaged.
See your Maintenance Schedule folder
for inspection procedure.
To allow proper operation of the car's
IIentilation system, keep front ventilation
inlet
grille clear of snow, leaves or other obstruction at all times.
SITTING IN A PARKED CAR WITH
ENGINE RUNNING FOR AN EXTENDED PERIOD IS NOT RECOMMENDED.
Do
not run engine in confined areas such as garages any more than needed to mOlle IIehicle In or out of area. When IIe­hlcle is stopped In an UNCONFINED area with the engine running for any more than a short period, adJust heating or cooling system to force outside air Into car as follows:
14
1. On cars not equipped with air condi­
tioning, set fan to medium or high
speed and upper control leller to any
position except OFF.
2. On cars equipped with manual air conditioning, set fan to medium or high speed, upper control lever to any
position except OFF, and lower con­trol lever to any position except ex­treme left COLD.
The trunk lid should be closed while
drilling to help prellent inadllertently draw­Ing exhaust gases Into the car. If Is unwise to drive at high speeds for long durations
with the trunk lid open. Howeller, If lor some reason the trunk must remain open lor a period while mOiling, or electrical wiring or other cable connections to a trailer must pass through the seal between
trunk lid and body, the lol/owlng precau­
tions should be observed:
• Close all windows.
• Ad/ust heating or cooling system to
force outside air into car as described In items 1 and 2 abolle but with Ian set at high speed.
• On cars equipped with outside aIr IIents In or under Instrument panel, open IIents lully.

Downloaded from www.Manualslib.com manuals search engine your foot from the accelerator.
If control button is not fully de­
pressed, when changing speed
setting,
. the car will resume your
previously selected speed.
To disengage system, lightly de­
press brake pedal or fully de­
press the control button.
Horn
The hom on your Monte Carlo
is actuated · by firmly pressing on
the pad in the center of the steering
wheel. As a good motorist, use of the
horn should be kept at a minimum.
However, acquaint yourself
as soon
as possible with this function of
your car, should it ever become
necessary to give a warning to a
pedestrian
or another motorist.
Holding Car on an Upgrade
When stopped on an upgrade,
maintain your position by apply­
ing the brakes. Never hold the
car in place by accelerating en-gine
with transmission in gear.
This could cause damage by over­
heating the transmission (auto­
matic)
or clutch (manual).
Parking Your Car
Always engage the parking
brake and place the automatic
transmission selector lever in
"Park" position when leaving your
car unattended. Also with auto­
matic transmissions, never park
for prolonged periods with engine
idling and transmission in gear,
especially if your car
is equipped
with air conditioning. This prac­
tice
is detrimental to the trans­
mission, due to overheating.
NOTE: For operation of hazard flasher, see page 41, in Section "In Case of Emergency."
22

Downloaded from www.Manualslib.com manuals search engine • Operate blower on "HIGH" for
a
few seconds before moving the
vehicle, to clear the intake ducts
of snow.
• Keep all windows and vents
closed to reduce dust, road and
wind noise and uncomfortable
drafts.
• For most satisfactory heater op­
eration and air circulation, op­
erate fan on low
or medium
speeds for normal operation and
high speed for quick warm-up
and during extremely low temp­
eratures.
• For adequate rear seat heating,
the area beneath the front seat
must not be blocked
by carpet­
ing, rags, paper or other ma­
terial and fan should operate on
high blower.
Rear Window Defroster
To ensure clear vision through
the rear window during inclement weather,
the Rear Window De­
froster
is optionally available. This
unit draws
in air from the pas­
senger compartment and directs it against
the back window to remove
frost or moisture. Its blower has a
two-speed control switch on the
instrument panel.
Four Season Air Conditioning System
Operating instructions for your
Four Season Air Conditioner are
as follows:
Fan
The fan lever has four (4) posi­
tions from Lo at the bottom to Hi,
35
at the top. When the air condition­
ing system
is off, low blower will
be maintained (after engine cool­
ant temperature has reached
85°
F.) no matter which position the
fan switch
is in.

Downloaded from www.Manualslib.com manuals search engine Temperature (Lower Lever)
The temperature lever allows a
selection of air temperature from
Cold at the far left to Hot
at the far
right. When the temperature lever
is in the COLD position the system
will provide the coldest air possible.
When the temperature lever
is
moved to the right (toward HOT) ,
the system will operate on outside
air.
Selector (Upper Lever)
This lever provides a selection of
systems available to handle various
heating and cooling requirements
throughout the year. The Selector
lever has four
(4) major opera­
tional
positions-"Off," "Air Condi­
tioning," "Vent" and "Heating."
The "Air Conditioning" and "Heat­
ing"
groups have several positions
which improve the effectiveness of the
system for various demands.
OFF-The system operates on low
blower regardless of fan switch po­
sition with air discharged into
ve­
hicle through heater outlet.
A/C-Air from the passenger com­
partment
is recirculated through
the system with some outside air
and discharged from the upper out­
lets when the temperature lever
is
in Full COLD or extreme left. If
the Temperature lever is moved
right to the first stop or further, the
system will automatically go on
outside air. The
AIC position, with
Temp. lever in Full
COLD, is used
when maximum cooling
is required
under conditions of high tempera­
ture and humidity. High fan speed
is automatically attained in this
position .
36
A/C (with Temp lever right to first
stop) -Outside air
is passed
through the system and discharged
through the upper outlets. This po­
sition
is recommended for most air
conditioning situations because of
reduced blower noise and reduction
of cigarette smdke within the
ve­
hicle. Fan speed may be varied as
required.
VENT -Outside air is passed
through the system and discharged
from the upper and lower outlets.
This position
is provided for cool
to moderate weather when refrig­
eration
is not required.
HEATER-Outside air
is delivered
through the heater outlet and with
some air through the defroster out­
lets. Temperature may be adjusted
as required. This position is recom-

Downloaded from www.Manualslib.com manuals search engine mended for most winter driving.
BI-LEVEL -Outside air is deliv­
ered from the heater lower outlet
and the defroster duct and upper
outlets to provide comfort and keep
the windshield and side glass clear
under low fogging conditions.
DEF -Outside air is delivered
through the defroster outlets only.
Temperature and blower speeds
may be adjusted
as required. This
position
is recommended for condi­
tions of severe fogging and icing
only.
Four Season System
Air
Outlets
All air outlets on the instrument
panel may be rotated
or vanes
turned to direct air
flow in direction
desired.
For additional air flow lap cool­
ers
(2) are provided under the
steering column and glove box.
They have vertical air control vane
outlets and are aimed at the driver
and passenger. Under each lap
cooler
is a floor cooler outlet that
is operated in a push-pull manner
for opening and closing, control­
ing the amount of air to the floor.
37
Air-Conditioner Operating
Tips
Close all windows and vents
when operating air conditioning
system except for the first
few
minutes of operation when the car
interior
is very hot. Close the win­
dows
as soon as the excessively
heated air has escaped.

Downloaded from www.Manualslib.com manuals search engine hood latch assembly and hood
hinge assembly as follows:
1. Wipe off any accumulation of
dirt or contamination on latch
parts.
2. Apply Lubriplate or equivalent
to latch pilot bolts and latch
locking plate.
3. Apply light engine oil to all
pivot points in release mecha­
nism, as well
as primary and
secondary latch mechanisms.
4. Lubricate hood hinges.
5. Make hood hinge and latch
mechanism functional check to
assure the assembly
is working
correctly.
Air Conditioning
Have your Chevrolet Dealer
check your Air Conditioning
sys­
tem at some time during the winter
months to be sure there has been no
loss in cooling output. During
NOTE: On vehicles equipped with
a
Pour Season Air Conditioning
System, the system will not operate
below ambient temperatures of
300P. regardless of control posi­
tion.
the summer,
see your Chevrolet
Dealer immediately if you suspect
the system
is not performing as it
should .
Cooling System Care
Check the coolant level at each
engine oil change.
Engine Cooling System
The recovery type cooling sys­
tem is standard on all Chevrolet
passenger cars and
is designed to
maintain the engine at proper op-
57
erating temperatures. The recovery
tank collects coolant that expands
with rising temperature that would
otherwi se overflow from the sys­
tem. When the system temperature
drops, the coolant
is drawn from
the recovery tank back into the
radiator by the suction created by
coolant contraction. The cooling
system has been filled at the factory
with a high-quality , inhibited, year­
around coolant that meets the stan­
dards of General Motors Specifica­
tion 1899-M. This coolant solution
provides freezing protection to
-20oP (-32° P in Canada), and
it has been formulated to be used
for two full calendar years or
24,000 miles, whichever first oc­
curs, of normal operation without
replacement.
Cooling System Care
Check the coolant level in the
'see thru' coolant recovery tank

Downloaded from www.Manualslib.com manuals search engine and in the radiator at least as fre­
quently
as engine oil changes.
NOTE: Do not remove radiator
cap when coolant
is hot and under
pressure.
Level should be at the
"FULL
COLD"
mark on the recovery tank
and at the bottom of the radiator
filler neck when the system
is cold.
During normal warm weather op­
eration the coolant should be at
the
"FULL HOT" mark on the re­
covery tank.
If the recovery tank is
empty or coolant is below the
"FULL COLD" mark the radiator
level should be checked and cool­
ant added to the radiator and re­
covery tank
as needed. Use a 50/50
mixture of high-quality ethylene gly­
col antifreeze and water for coolant
additions.
If regular additions are
required see your dealer for a cool­
ing system check.
NOTE: If recommended quaIily
antifreeze is used, supplemental in­
hibitors or additives claiming to
provide increased capability are
not necessary. They may be detri­
mental
to the efficient operation of
the system, and represent an un­
necessary operating expense.
Every year, the cooling system
should be serviced
as follows:
1 . Wash radiator cap and filler
neck with clean water.
2. Check coolant for proper
level and freeze protection.
3. Pressure test system and radi­
ator cap for proper pressure
holding capacity (15 psi).
If
replacement of cap is re­
quired, use the special AC
cap designed for coolant re­
covery systems, specified for
your car model.
4. Tighten hose clamps and in­
spect all hoses. Replace hoses
58
whenever swollen, checked or
otherwise deteriorated.
5. Clean frontal area of radiator
core and air conditioning
condenser.
Every two years or
24,000 miles,
whichever first occurs, the cooling
system should be flushed and re­
filled using the following recom­
mended procedure:
1. Run engine, with radiator cap
removed, until normal operat­
ing temperature
is reached
and upper radiator hose
is hot
(indicates thermostat
is open.)
2. Stop engine and open radiator
drain valve to drain coolant.
(To speed this operation, the
drain plugs in the block can
also be removed.)

Downloaded from www.Manualslib.com manuals search engine FUSES AND CIRCUIT BREAKER:
The headlamp circuit is protected by a circuit breaker in the light switch. An electrical overload on the breaker will cause the lamps to go on and
off, or in some cases to remain off. If this condition develops, have your
wiring circuits checked immediately. Also, a circuit breaker, mounted on the firewall, protects the power window and power seat circuits if vehicle is so equipped. Where current load is too heavy, the circuit breaker
intermittently opens and closes, protecting the circuit until the cause is found and eliminated.
Fuses, located in the Junction Block beneath the dash on the driver's side are:
Radio, TCS, Rear Defogger
Power Window Relay, Hydra-matic Downshift, Anti Diesel Control. .... .. ................ ... ... .... .. 20 Amp. W /S Wiper. ... .......................................... 25 Amp.
Stop Lamps, Hazard Flasher .............................. 20 Amp. Heater A/C . . . . . . . . . .. . ..... ............................ 25 Amp.
Dir. Sig., B /U Lamps, Cruise Master, Side MarkerLamps, Blocking Relay (A/C) ............... .. .. .............. .. 20 Amp.
Inst. Lamps, Floor Shift Lamps ....... .... .. .... ............ 4 Amp. Gauges, Instr. Panel Warning .............................. 10 Amp.
Clock, Courtesy Light, Lighter, Glove Box and Dome Lamp ... . 20 Amp.
Tail Lamps, License, and Side Marking Lamp .............. .. 20 Amp.
An Air Conditioning high blower speed fuse, 30 amp. is located in an I n-line fuse holder running from horn relay to Air Conditioning relay.
Do not use fuses of higher amperage rating than those recommended above.
Fusible Links are incorporated into the wiring system. These are wires of such a gauge that they will fuse (or melt) before damage occurs to an entire
wiring harness in the event of an electrical overload. See your Chevrolet Dealer if fusible link replacement becomes necessary.
73
BULB SPECIFICATIONS
(Replace w ith AC Guide Lamp)
Headlight Unit High Beam
low Beam Front Park and Directional Signal
Front Fender Side Marker lamp Rear Side Marker lamp
Tail, Stop, and Rear Directional Siinal
License Plate Lame Back Up lamps
Courtes~ lamp
Dome Lame Instrument Illumination lamp
Automatic Transmission Lamp
High Beam Headlamp Indicator
Indicator
lamps Gen. Oil Temp.~stem Brake arning Turn Signal
Seat Belt W IS Washer Switch light Switch
Radio Dial (Stereo)
I ndicator (Stereo)
Heater or AIC Control Panel lame
Glove Box lamp
Radio Dial lamp
Floor Mounted Console
Underhood lame
Luggage Compartment
Candle
Power Number
60W 6014
SOW Sealed Beam 32-3 1157 NA
2
194 2 194 32-3 1157
4 67 32 1156 6 631 12 211-2
3 168 2 1895
3 168
3 168 3 168 3 168 3 168 3 168 3 168 3 168 3 168
2 564 .065 66 1 1445
2 1893
3 1816
2 1895
15 93
15 1003