2012 CHEVROLET MALIBU heating

Black plate (16,1)Chevrolet Malibu Owner Manual - 2012
10-16 Vehicle Care
Cooling System
The cooling system allows the
engine to maintain the correct
working temperature.
3.6 L V6 Engine Shown,2.4 L L4 Engine Similar
A. Engine Cooling Fans (Out of View)
B. Engine Coolant Surge Tank
C. Pressure Cap
{WARNING
An electric engine cooling fan
under the hood can start up even
when the engine is not running
and can cause injury. Keep
hands, clothing, and tools away
from any underhood electric fan.
{WARNING
Heater and radiator hoses, and
other engine parts, can be very
hot. Do not touch them. If you do,
you can be burned.
Do not run the engine if there is
a leak. If you run the engine, it
could lose all coolant. That could
cause an engine fire, and you
could be burned. Get any leak
fixed before you drive the vehicle. Notice:
Using coolant other than
DEX-COOL
®can cause premature
engine, heater core, or radiator
corrosion. In addition, the engine
coolant could require changing
sooner, at 50 000 km (30,000 mi)
or 24 months, whichever occurs
first. Any repairs would not be
covered by the vehicle warranty.
Always use DEX-COOL
(silicate-free) coolant in the
vehicle.
Engine Coolant
The cooling system in the vehicle
is filled with DEX-COOL®engine
coolant. This coolant is designed to
remain in the vehicle for 5 years or
240 000 km (150,000 mi), whichever
occurs first.
The following explains the cooling
system and how to check and add
coolant when it is low. If there is a
problem with engine overheating,
see Engine Overheating on
page 10‑20.

Black plate (18,1)Chevrolet Malibu Owner Manual - 2012
10-18 Vehicle Care
Checking Coolant
The vehicle must be on a level
surface when checking the coolant
level.
Check to see if coolant is visible in
the coolant surge tank. If the coolant
inside the coolant surge tank is
boiling, do not do anything else until
it cools down. If coolant is visible
but the coolant level is not at or
above the FULL COLD mark, add a
50/50 mixture of clean, drinkable
water and DEX-COOL coolant at the
coolant surge tank, but be sure the
cooling system is cool before this is
done. SeeEngine Overheating on
page 10‑20 for more information.
The coolant level should be at or
above the FULL COLD mark on the
coolant surge tank. If it is not, there
may be a leak at the pressure cap
or in the radiator hoses, heater
hoses, radiator, water pump,
or somewhere else in the cooling
system.
How to Add Coolant to the
Coolant Surge Tank
{WARNING
An electric engine cooling fan
under the hood can start up even
when the engine is not running
and can cause injury. Keep
hands, clothing, and tools away
from any underhood electric fan.
{WARNING
Steam and scalding liquids from a
hot cooling system can blow out
and burn you badly. They are
under pressure, and if you turn
the surge tank pressure
cap —even a little —they can
come out at high speed. Never
turn the cap when the cooling
system, including the surge tank
(Continued)
WARNING (Continued)
pressure cap, is hot. Wait for the
cooling system and surge tank
pressure cap to cool if you ever
have to turn the pressure cap.
{WARNING
You can be burned if you spill
coolant on hot engine parts.
Coolant contains ethylene glycol
and it will burn if the engine parts
are hot enough. Do not spill
coolant on a hot engine.
Notice: This vehicle has a
specific coolant fill procedure.
Failure to follow this procedure
could cause the engine to
overheat and be severely
damaged.

Black plate (20,1)Chevrolet Malibu Owner Manual - 2012
10-20 Vehicle Care
Engine Overheating
The vehicle has several indicators
to warn of engine overheating.
There is an engine coolant
temperature gauge as well as an
engine coolant temperature warning
light on the vehicle's instrument
panel cluster. SeeEngine Coolant
Temperature Gauge on page 5‑13
and Engine Coolant Temperature
Warning Light on page 5‑21.
If it is decided not to lift the hood
when this warning appears, but
instead get service help right away.
See Roadside Assistance Program
(U.S. and Canada) on page 13‑7 or
Roadside Assistance Program
(Mexico) on page 13‑10.
If it is decided to lift the hood, make
sure the vehicle is parked on a level
surface.
Then check to see if the engine
cooling fans are running. If the
engine is overheating, both fans should be running. If they are not,
do not continue to run the engine
and have the vehicle serviced.
Notice:
Engine damage from
running the engine without
coolant is not covered by the
warranty.
If Steam is Coming from the
Engine Compartment
{WARNING
Steam from an overheated engine
can burn you badly, even if you
just open the hood. Stay away
from the engine if you see or hear
steam coming from it. Just turn it
off and get everyone away from
the vehicle until it cools down.
Wait until there is no sign of
steam or coolant before you open
the hood.
(Continued)
WARNING (Continued)
If you keep driving when the
engine is overheated, the liquids
in it can catch fire. You or others
could be badly burned. Stop the
engine if it overheats, and get out
of the vehicle until the engine
is cool.
If No Steam is Coming from
the Engine Compartment
If an engine overheat warning is
displayed but no steam can be seen
or heard, the problem may not be
too serious. Sometimes the engine
can get a little too hot when the
vehicle:
.Climbs a long hill on a hot day.
.Stops after high-speed driving.
.Idles for long periods in traffic.
.Tows a trailer.

Black plate (36,1)Chevrolet Malibu Owner Manual - 2012
10-36 Vehicle Care
FusesUsage
4 Transmission Control
Module Ignition 1
5 Mass Airflow
Sensor (LY7)
6 Emission
7 Left Headlamp
Low-Beam
8 Horn
9 Right Headlamp
Low-Beam
10 Front Fog Lamps
11 Left Headlamp
High-Beam
12 Right Headlamp
High-Beam
13 Engine Control
Module BATT
14 Windshield Wiper
15 Antilock Brake
System (IGN 1) Fuses
Usage
16 Engine Control
Module IGN 1
17 Cooling Fan 1
18 Cooling Fan 2
19 Run Relay, Heating,
Ventilation, Air
Conditioning Blower
20 Body Control
Module 1
21 Body Control Module
Run/Crank
22 Rear Electrical
Center 1
23 Rear Electrical
Center 2
24 Antilock Brake
System
25 Body Control
Module 2
26 Starter Fuses
Usage
41 Electric Power
Steering
42 Transmission Control
Module Battery
43 Ignition Module
(LE9 & LE5);
Injectors, Ignition
Coils Odd (LY7)
44 Injectors (LE9 & LE5);
Injectors, Ignition
Coils Even (LY7)
45 Post Cat 02 Sensor
Heaters (LY7)
46 Daytime Running
Lamps
47 Center High-Mounted
Stoplamp
50 Driver Power Window
51 Not Used
52 AIR Solenoid

Black plate (38,1)Chevrolet Malibu Owner Manual - 2012
10-38 Vehicle Care
The vehicle may not be equipped
with all of the fuses, relays and
features shown.Fuses Usage
POWER
MIRRORS Power Mirrors
EPS Electronic Power
Steering Fuses Usage
RUN/
CRANK Cruise Control
Switch, Passenger
Airbag Status
Indicator
HVAC
BLOWER
HIGH Heating Ventilation
Air Conditioning
Blower - High
Speed Relay
CLUSTER/
THEFT Instrument Panel
Cluster, Theft
Deterrent System
ONSTAR OnStar
®
(If Equipped)
NOT
INSTALLED Not Used
AIRBAG
(IGN) Airbag (Ignition)
HVAC
CTRL
(BATT) Heating Ventilation
Air Conditioning
Control Diagnostic
Link Connector
(Battery)

Black plate (39,1)Chevrolet Malibu Owner Manual - 2012
Vehicle Care 10-39
FusesUsage
PEDAL Not Used
WIPER SW Windshield Wiper/
Washer Switch
IGN
SENSOR Ignition Switch
STRG WHL
ILLUM Steering Wheel
Illumination
NOT
INSTALLED Not Used
RADIO Audio System
INTERIOR
LIGHTS Interior Lamps
NOT
INSTALLED Not Used
POWER
WINDOWS Power Windows
HVAC
CTRL (IGN) Heating Ventilation
Air Conditioning
Control (Ignition) Fuses
Usage
HVAC
BLOWER Heating Ventilation
Air Conditioning
Blower Switch
DOOR
LOCK Door Locks
ROOF/
HEAT SEAT Sunroof,
Heated Seat
NOT
INSTALLED Not Used
NOT
INSTALLED Not Used
AIRBAG
(BATT) Airbag (Battery)
SPARE
FUSE
HOLDER Spare Fuse Holder
SPARE
FUSE
HOLDER Spare Fuse Holder Fuses
Usage
SPARE
FUSE
HOLDER Spare Fuse Holder
SPARE
FUSE
HOLDER Spare Fuse Holder
FUSE
PULLER Fuse Puller

Black plate (42,1)Chevrolet Malibu Owner Manual - 2012
10-42 Vehicle Care
Wheels and Tires
Tires
Every new GM vehicle has
high-quality tires made by a
leading tire manufacturer.
See the warranty manual for
information regarding the tire
warranty and where to get
service. For additional
information refer to the tire
manufacturer.
{WARNING
.Poorly maintained and
improperly used tires are
dangerous.
.Overloading the tires can
cause overheating as a result
of too much flexing. There
could be a blowout and a
serious crash. SeeVehicle
Load Limits on page 9‑11.
(Continued)
WARNING (Continued)
.Underinflated tires pose the
same danger as overloaded
tires. The resulting crash
could cause serious injury.
Check all tires frequently to
maintain the recommended
pressure. Tire pressure
should be checked when the
tires are cold.
.Overinflated tires are more
likely to be cut, punctured,
or broken by a sudden
impact—such as when
hitting a pothole. Keep tires
at the recommended
pressure.
.Worn or old tires can cause a
crash. If the tread is badly
worn, replace them.
.Replace any tires that have
been damaged by impacts
with potholes, curbs, etc.
(Continued)
WARNING (Continued)
.Improperly repaired tires can
cause a crash. Only the
dealer or an authorized tire
service center should repair,
replace, dismount, and mount
the tires.
.Do not spin the tires in
excess of 55 km/h (35 mph)
on slippery surfaces such
as snow, mud, ice, etc.
Excessive spinning may
cause the tires to explode.
SeeTire Pressure for
High-Speed Operation on
page 10‑51 for inflation pressure
adjustment for high-speed
driving.

Black plate (50,1)Chevrolet Malibu Owner Manual - 2012
10-50 Vehicle Care
Tire Pressure
Tires need the correct amount
of air pressure to operate
effectively.
Notice:Neither tire
underinflation nor
overinflation is good.
Underinflated tires, or tires
that do not have enough air,
can result in:
.Tire overloading and
overheating which could
lead to a blowout.
.Premature or
irregular wear.
.Poor handling.
.Reduced fuel economy. Overinflated tires, or tires
that have too much air, can
result in:
.Unusual wear.
.Poor handling.
.Rough ride.
.Needless damage from
road hazards.
The Tire and Loading
Information label on the
vehicle indicates the original
equipment tires and the correct
cold tire inflation pressures.
The recommended pressure
is the minimum air pressure
needed to support the vehicle's
maximum load carrying capacity. For additional information
regarding how much weight
the vehicle can carry, and an
example of the Tire and Loading
Information label, see
Vehicle
Load Limits on page 9‑11.
How the vehicle is loaded
affects vehicle handling and ride
comfort. Never load the vehicle
with more weight than it was
designed to carry.
When to Check
Check the tires once a month
or more. Do not forget the
compact spare tire, if the vehicle
has one. The compact spare
should be at 420 kPa (60 psi).
For additional information
regarding the compact spare
tire, see Compact Spare Tire on
page 10‑82.