1976 CHEVROLET MONTE CARLO cooling

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Maintenance
More frequent vehicle mainte­
nance
is required when using your
car
to pull a trailer. Change. the:
• Automatic transmission fluid
and filter each 15,000 miles,
(see Trai/ering brochure foraddi­
tional information).
.• Rear axle fluid each 15,000
miles,
• Engine oil each 90 days or 3,000
miles , whichever occurs first,
• Positive crankcase ventilation
valve each
12 months or 15,000
miles, whichever occurs first.
• See index for important informa­
tion on belts, cooling system care
and automatic brake
adjuslrilent.
Break·in Schec;!ule
In addition to the new car break-in
instructions in this manual, it
is
recommended that your new car
be operated for 500 miles before
trailer towing.
If it is necessary to
tow during this period, avoid speeds
over
50 MPH and full throttle
starts. The same precautions should
be observed whenever a new
en­
gine , transmission or axle is in­
stalled in your car.
1·11

Downloaded from www.Manualslib.com manuals search engine STARTING· AND OPERATING
Engine Exhaust Gas Caution (Carbon Monoxide)
Avoid Inhaling exhaust gases because
thay cont./n carbon mODOxlde, which by
1t'811 Is color/e.. and odor/elS. Carbon
monoxIde Is • dangerous gas fh,t can
caus. uneonsC /ousnftu and Is potentially
lelha/.
It at any time you .,u.pect that exhaust _
tumes ., •• nf.rlng'··the passenger com­
partment , half' the -cause determined and
co".cfed a. soon as possible. II you must
drlv. under these c6ndltions, drive only
with a/l window. luliy open.
-
The best protection .gainst carbon mon­
oxide entry Into the' C81 body Is a properly
maintained' engine exhaust system, car
body and body v.ntllallon syslem. /I Is
recommended tha' the -exhaust system
and body bo Inspecled by a compel"",
mechanic. .
• Each limo rhe vehlcl. I. ralsod lor 011
c"'ng8.
• Whn.If.r " change Is noticed in the
sound 01 IIH1 exhaul' sy~.m.
• Whene"., the ."haust system" 'under­
body or TNr ot the .,ehlele is damaged.
S .. 1.0U1 Maintenance Schedule tolder
furn
shed with your .,ehle/. for Inspec­
tion procedure .
To allow proper operation ot the car's
ventli.t/on system. keep tront ventilation
Inl.t grme e/hr at .now. I."ves or other
obstruction
.t .11 time,.
SITTING IN A PARKED CAR WITH
ENGINE RUNNING FOR
AN EXTENDED
PERIOD IS NOT RECOMMENDED.
Do not run ,.nglne In confined areas
such as ,garage. ",.iny more than needed
to mOlfe"vehic/. In' or' out of are •. When
v.hlc/ol • • 'opped In an UNCONFINED
ar •• with the engine running tor any more
than a 'short period , adJust he.ting or
cooling sy.tem to toree outside aIr into
car .s tollow,:
1. On cars not equipped with air condi­
tioning.
set tan to medium or high
spefKi and upper control lever to any
poslUon oxcepl OFF.
2-1
2. ' On c." equipped with menu.' air call­
dltlonlng, 8.t fIn to m.dium or high
speed. upper control lever to any pos;­
: tlon except OFF, Ind lower contrOl
I.ver to Iny position except .xtrem •
. ,." COLD.
3. On cara equIpped with automatic a"
conditioning , .et control ,-.,e, to HI
except In hot wNther In .""lch cas.,
set lever In AUTO.
The Irunk lid should be closed while
driving to help prevent Inadvertently draw­
Ing exhaust gases Into the car. It I. unwise
to drive .t high speed. for long dUrations
with
the trunk lid open. However, if for
some ,e.son the trunk must remain open
tor a period' whJle moving, or electrical
wiring
or other cabl. connections to a
trailer mu.t PlIS through the seal be­
tween trunk lid and bo,dy, the following
precaut~ons shoUld be observed:
• Close all windows.
• Ad/u.t h •• tlng or cooling system to
force outside aIr Into car as described
In nem. 1, 2 and 3 abo,.e but with f.n
.al ., hIgh speod.
• On cats equipped with outside air vents
In or under Instrument panel, open
vonl. lully.

Downloaded from www.Manualslib.com manuals search engine vides ventilation . coillfort , made
possible
by the additionaf air veilt
provisions ' in the rear 1:>ody lock
pillar. Another feature of the
sys­
tem is continuous low:speed opera­
tion of the heater and air condi­
tioner blower , resulting in an un­
interrupted
supply of outside air
flOw into the car whenever the
ignition switch is.on. With
the side windows closed,
out side air will
flow into the front
grilles, through the car and out the
rear air exhaust valves.
Basic Operating Tips
'. Always keep front Jnlet grille
clear of obstructions (leaves,
ice, snow, etc.).
• When heating or air condition-
2-18
ingis desired , best comfort is at­
tained by driving with all win­
dows closed.
The following sections of this
manual provide additional operat-
. ing tips for obtaining maximum
heating and
cooling comfort. (See
also Engine Exnaust Gas Caution
at beginning of
this Seotion.)

Downloaded from www.Manualslib.com manuals search engine • For most satisfactory heater op­
eration and air circulation , oper­
ate fan on low or medium speeds
for normal operation and high
s peeds for quick warm -up and
during extremely low
tempera­
tures.
• For adeq uate rear sea t he ating,
the area beneath the front seat
mus not be block ed by carpet­
ing, rags, paper or oth er mate­
rial and fan sh ould operate on
high blower.
Rear Window Defroster
To ensure clear vision through
the rear
window during inclem ent
weather , the Rear Window
De­
froster is optionally available. This
unit dr
aws. in air from the pas­
senger compart ment and directs it
aga inst the back window to remove
frost or moisture. Its blower h
as a
two-speed control switch on the
instrument panel.
Four Season Air Conditioning System
Operating instructions for your
Four Season Air Conditioner are
a s follows:
FAN
The fan lever has four (4) posi­
tions from Lo at the bottom to Hi
at the top. When the air
condition­
ing system is off, low blower will
be maintained (after engine
tem­
perature has reached 95°F) no
matter which positi on the fan
switch is in.
2-20
TEMPERATURE SELECTOR
-Lower~Lever
The temperature ' lever allows a
selection of air temperature from
Cold at the far left to Hot at the far
right.
OPERATION SELECTOR
-Upper Lever
This lever prov ides a selection of
systems available to handle various
heating and cooling requirements
throughout the year.
The " Air Con-,
ditioning"
an d "He ating" groups

Downloaded from www.Manualslib.com manuals search engine Air Conditioning Comfortron System
The system will run at increased
. capacity
until the pre-set tempera­
~
~ ~ OFF .00_:;;::;
• • • • • so i Ii
(U·LIEVEL OIEF
• • "I
Comfortron Air Conditioning adds
the convenience of completely
automatic control. to the combined
heating and cooling functions of
the Four-Season system,
automat­
ically maintaining selected inside
temperature regardless of season or
outside weather conditions.
NOTE: In cool weather, the blower
will not start until engine is warmed
up . (Control lever in
"OFF" or
"AUTO" position.)
During warm weather, cooled,
dehumidified air enters the car
through the upper outlets. During
cold weather, heated airflow will
enter the car through the floor
dis­
tributor duct.
Control Panel
The control panel has a tempera­
ture dial and a single control lever.
Temperature Dial
This dial may be set once to the
desired temperature , much
as your
home thermostat, and normally
need not be adjusted thereafter.
2-22
ture is reached. Further movement
of the temperature dial will not
de­
crease the time needed to bring the
car to this temperature . However,
since individual comfort
require­
ments vary considerably, you may
wish to vary the dial setting slightly
to compensate for warmer
or cooler
weather.
Control .Lever
In the OFF position, the system
operates on low blower with air
dis­
charged into vehicle through the
heater outlet.
It is not necessary to
turn the system to
OFF when leav­
ing the car. It will then operate
automatically whenever the car is
started.
Economy
This position is provided for cool

Downloaded from www.Manualslib.com manuals search engine level the car under various loaded
conditions. Air
is added to the
rear shock absorbers,
as needed,
through an air valve located
in the
rear bumper
as shown in the illus­
tration. A minimum pressure of
10-\5 psi should be maintained at
all times. After the car is loaded ,
pressure may be increased until the
rear of the vehicle returns to the
normal designed riding height, but
not to exceed
90 psi.
Station Wagon
,t tor some reason, It Is necessary to drive with the tailgat. window open, the
Reclining Seat Back
Caprice
Models .
The passenger seat back can be
reclined rearward approximately
20 degrees from normal position
by lifting the control lever at the
outboard side
of the passenger's
following 'precautions should be observed:
• Close all other windows.
• Adjust heating or cooling system to torce outside air. Into, car 8S follows:
1. On $fatlon Wagons not equipped with' ai' conditlon;ng, set Ian to medium Ot high speed and upper control lever to any position except OFf. 2. On Station Wagons equipped with manua' air conditioning, set 'an to
2-28
seat cushion and. exerting rearward
pressure
or with no pressure on the
seat back
allow seat back to
return forward.
medium or, high sPded, upper control lever to any posWan except OFF, and lower control lever to any position
except extrem~ lett COLD.
3 . On Station Wagons equipped with a.utomaUc .'r conditioning. set ~ontrol lerer to HI except in hot weather, in which cas., set 'ever to AUTO.
• On starlon wagons equipped with oui­side air rents under or In Instrument panel, open venrs fully.
•

Downloaded from www.Manualslib.com manuals search engine ENGINE COOLING
SYSTEM
The recovery type cooling sys­
tem is standard on all Chevrolet
pasSenger cars. The coolant ex~
pands with rising temperature and
the overflow
is dOllected in the
recovery tank.
When the system
temperature drops, the coolant is
drawn back
intocthe radiator. The
cooling system has been filled at
the factory with a high-quality, in­
hibited , year-around coolant that
meets the standards
of General
Motors Specification I
899"M. This
coolant solution provides freezing
protection
to -20oP (-28°C),
and in Canada to _35°P
( -37°C), and it h~s been formu­
lated to be used without replace­
ment for two years or 30,000 miles.
After two years
or 30,000 miles,
the coolant should be drained to
prevent rust or corrosion in the
radiator and engine.
Cooling System Care
Do not remove radiator cap to
check coolantlevel , but
checkvisu­
ally in the "see 'thru " coolant re­
covery tank at least as frequently
as ,needed. LeveL should be at the
"full cold" mark on the recovery
tank when the system
is cold and
at the
"full hot" roark at Iiormal
operating temperature. Add'~ 501
50 mixture of high-quality ethylene
glycol antifreeze and
waler for
coolant additions.
If frequent addi­
tionsare required, see your dealer
for
a cooling system check.
NOTE: If recommended quality
antifreeze
is used,supplemental in­
hibitors or additives claiming to
provide increased capability are
not
necessary. They may be detrimen­
tal to the efficient operation of the
system, and represent an
unneces­
sary operating expense.
5-7
The cooling system should be
serviced every year as follows:
1. Wash radiator cap and filler neck
with clean water.
2. Check coolant for proper level
and freeze protection.
3. Test system
and radiator cap for
, properpresslire holding capacity
(15 psi).
Ifreqitired, use cap
designed by
AC for coolant re­
co~ery systems, and specified for
your model.
4, Tighten hose clamps and
inspect
all hoses. Replace hoses if swol­
len, checked or otherwise deteri­
orated.
5. Clean frontal area of radiator
, qcire and air conditioning con­
denser.

Downloaded from www.Manualslib.com manuals search engine Every two years or 30,000 miles,
whichever occurs first, the cooling
system should be flushed and re­
filled using the following recom­
mended procedure:
1. Rem()ve radiator cap when en­
gineis cool:
• Rotate cap slowly counter­
clockwise to detent (Do not
press down while rotating.)
• Wait until residual pressure
(indicated by a hissing
sound) is relieved, then press
down
on cap and continue
to rotate counterclockwise.
2.
Run engine, with radiator cap
removed, until upper radiator
hose
is hot (indicates thermo­
stat
is open).
3. Stop engine and open radiator
valve to drain coolant.
(Opera­
tion may be speeded by remov­
ing drain plugs in the block.)
4. Close valve (install block drain
plugs, if removed) and add
sufficient water to
fill system.
5. Repeat steps
1, 2, 3" and 4, a
sufficient number of times until
the drained liquid
is nearly
colorless.
6. Allow system to drain com­
pletely
and then close radiator
drain valve tightly. (Install
block drain plugs, if removed.)
7. Remove recovery cap leaving
hoses in place. Remove coolant
recovery tank, empty fluid,
scrub
and clean bottom and
sides of tank with detergent and
water, flush well with clean
water, drain
and reinstall.
5-8
8. Add sufficient ethylene glycol
coolant, meeting
OM Specifica­
tion
1899~M, to provide the re­
quired freezing
and corrosion
protection"-at least a 50 per­
cent solution
-34°F, -37°C.
Fill radiator to the base of the
radiator filler neck
and bring
level of coolant in the recovery
tank to the
"FULL HOT"
mark. Reinstall recovery tank
cap.
9.
Run engine, with radiator cap
removed, until .radiator upper
hose becomes hot.
I
O. With engine idlil)g, add coolant
to radiator until level reaches
bottom of filler neck; install
cap
making certain arrows line up
with overflow tube.
It is the owner's responsibility to:
• Maintain cooling system freeze