cooling CHEVROLET MALIBU 2019 User Guide

Chevrolet Malibu Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12461813) - 2019 - crc - 12/11/18
248 Vehicle Care
1.5L L4 Turbo Engine
1.8L L4 Hybrid Engine
2.0L L4 Turbo Engine
1. Remove the air cleaner
housing cover screws.
2. Raise the air cleaner housing
cover and remove the air
cleaner/filter from the air
cleaner housing.
3. Clean the filter sealing surface
and the housing.
4. Install the new engine air
cleaner/filter.
5. Lower the air cleaner housing
cover and secure with the
screws.
{Warning
Operating the engine with the air
cleaner/filter off can cause you or
others to be burned. Use caution
when working on the engine. Do
not start the engine or drive the
vehicle with the air cleaner/filter
off, as flames may be present if
the engine backfires.
Caution
If the air cleaner/filter is off, dirt
can easily get into the engine,
which could damage it. Always
have the air cleaner/filter in place
when driving.
Cooling System (Engine)
The cooling system allows the
engine to maintain the correct
working temperature.

Chevrolet Malibu Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12461813) - 2019 - crc - 12/11/18
Vehicle Care 249
1.5L L4 Turbo Engine
1.8L L4 Hybrid Engine
2.0L L4 Turbo Engine
1. Engine Cooling Fan (Out
of View)
2. Coolant Surge Tank and
Pressure Cap
{Warning
An underhood electric fan 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
Do not touch heater or radiator
hoses, or other engine parts.
They can be very hot and can
burn you. Do not run the engine if
there is a leak; all coolant could
leak out. That could cause an
engine fire and can burn you. Fix
any leak before driving the
vehicle.
Engine Coolant
The cooling system in the vehicle is
filled with DEX-COOL engine
coolant mixture. SeeRecommended
Fluids and Lubricants0338and
Maintenance Schedule0329.
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,
seeEngine Overheating0253.

Chevrolet Malibu Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12461813) - 2019 - crc - 12/11/18
250 Vehicle Care
What to Use
{Warning
Plain water, or other liquids such
as alcohol, can boil before the
proper coolant mixture will. With
plain water or the wrong mixture,
the engine could get too hot but
there would not be an overheat
warning. The engine could catch
fire and you or others could be
burned.
Use a 50/50 mixture of clean,
drinkable water and DEX-COOL
coolant. This mixture:
.
Gives freezing protection down
to−37 °C (−34 °F), outside
temperature.
.
Gives boiling protection up to
129 °C (265 °F), engine
temperature.
.
Protects against rust and
corrosion.
.
Will not damage aluminum parts..
Helps keep the proper engine
temperature.Caution
Do not use anything other than a
mix of DEX-COOL coolant that
meets GM Standard
GMW3420 and clean, drinkable
water. Anything else can cause
damage to the engine cooling
system and the vehicle, which
would not be covered by the
vehicle warranty.
Never dispose of engine coolant by
putting it in the trash, or by pouring
it on the ground, or into sewers,
streams or bodies of water. Have
the coolant changed by an
authorized service center, familiar
with legal requirements regarding
used coolant disposal. This will help
protect the environment and your
health.
Checking Coolant
The vehicle must be on a level
surface when checking the coolant
level.
1.5L L4 Turbo and 2.0L L4 Turbo
Coolant Surge Tank

Chevrolet Malibu Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12461813) - 2019 - crc - 12/11/18
Vehicle Care 251
1.8L L4 Hybrid Coolant
Surge Tank
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 5-10 mm (0.2-0.4 in)
above the mid-point of the coolant
surge tank, add a 50/50 mixture of
clean, drinkable water and
DEX-COOL coolant.
Be sure the cooling system is cool
before this is done.If no coolant is visible in the coolant
surge tank, add coolant as follows:
How to Add Coolant to the
Coolant Surge Tank
{Warning
Spilling coolant on hot engine
parts can burn you. Coolant
contains ethylene glycol and it will
burn if the engine parts are hot
enough.
{Warning
Plain water, or other liquids such
as alcohol, can boil before the
proper coolant mixture will. With
plain water or the wrong mixture,
the engine could get too hot but
there would not be an overheat
warning. The engine could catch
fire and you or others could be
burned.
{Warning
Steam and scalding liquids from a
hot cooling system are under
pressure. Turning the pressure
cap, even a little, can cause them
to come out at high speed and
you could be burned. Never turn
the cap when the cooling system,
including the pressure cap, is hot.
Wait for the cooling system and
pressure cap to cool.
Caution
Failure to follow the specific
coolant fill procedure could cause
the engine to overheat and could
cause system damage. If coolant
is not visible in the surge tank,
contact your dealer.
The coolant surge tank pressure
cap can be removed when the
cooling system, including the surge
tank pressure cap and upper
radiator hose, is no longer hot.

Chevrolet Malibu Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12461813) - 2019 - crc - 12/11/18
252 Vehicle Care
1. Turn the pressure cap slowly
counterclockwise. If a hiss is
heard, wait for that to stop.
A hiss means there is still
some pressure left.
2. Keep turning the cap and
remove it.
1.5L L4 Turbo and 2.0L L4 Turbo
Coolant Surge Tank
1.8L L4 Hybrid Coolant
Surge Tank
3. Fill the coolant surge tank with
the proper mixture to 5-10 mm
(0.2-0.4 in) above the mid-point
on the coolant surge tank.
4. With the coolant surge tank
cap off, start the engine and let
it run until the upper radiator
hose starts getting hot. Watch
out for the engine cooling fan.
By this time, the coolant level
inside the coolant surge tank
may be lower. If the level is
lower, add more of the proper
mixture to the coolant surge
tank until the level reaches5-10 mm (0.2-0.4 in) above the
mid-point on the coolant
surge tank.
5. Replace the cap tightly.
6. Check the level in the surge
tank when the cooling system
has cooled down. If the coolant
is not at the proper level,
repeat Steps 1–6 and reinstall
the pressure cap. If the coolant
still is not at the proper level
when the system cools down
again, see your dealer.
Caution
If the pressure cap is not tightly
installed, coolant loss and engine
damage may occur. Be sure the
cap is properly and tightly
secured.

Chevrolet Malibu Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12461813) - 2019 - crc - 12/11/18
Vehicle Care 253
Cooling System (Power
Electronics)
The power electronics cooling
system keeps the hybrid propulsion
system within a normal operating
temperature range.
What to Use
The power electronics coolant
reservoir in the vehicle is filled with
GM Premix DEX-COOL coolant.
If using this mixture, nothing else
needs to be added.
The coolant needs to be replaced at
the appropriate interval. See
Maintenance Schedule0329.
Checking Coolant
The vehicle must be on a level
surface when checking the coolant
level.
The power electronics coolant
reservoir is located in the engine
compartment. SeeEngine
Compartment Overview0237.
Check to see if coolant is visible in
the power electronics coolant
reservoir. If coolant is visible but the
coolant level is below the indicated
mark, there could be a leak in the
cooling system.
The power electronics coolant
should only be serviced by a
qualified technician.
Engine Overheating
The vehicle has an engine coolant
temperature gauge on the
instrument cluster to warn of engine
overheating. SeeEngine Coolant
Temperature Gauge0121.If the decision is made not to lift the
hood when this warning appears,
get service help right away. Contact
your dealer for additional
information.
If the decision is made 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.
Have the vehicle serviced.
Caution
Do not run the engine if there is a
leak in the engine cooling system.
This can cause a loss of all
coolant and can damage the
system and vehicle. Have any
leaks fixed right away.

Chevrolet Malibu Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12461813) - 2019 - crc - 12/11/18
254 Vehicle Care
If Steam Is Coming from the
Engine Compartment
{Warning
Steam and scalding liquids from a
hot cooling system are under
pressure. Turning the pressure
cap, even a little, can cause them
to come out at high speed and
you could be burned. Never turn
the cap when the cooling system,
including the pressure cap, is hot.
Wait for the cooling system and
pressure cap to 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.If the overheat warning is displayed
with no sign of steam:
1. Turn the air conditioning off.
2. Turn the heater on to the
highest temperature and to the
highest fan speed. Open the
windows as necessary.
3. When it is safe to do so, pull off
the road, shift to P (Park) or
N (Neutral), and let the
engine idle.
If the engine coolant temperature
gauge is no longer in the overheat
zone, the vehicle can be driven.
Continue to drive the vehicle slowly
for about 10 minutes. Keep a safe
distance from the vehicle in front.
If the warning does not come back
on, continue to drive normally and
have the cooling system checked
for proper fill and function.
If the warning continues, pull over,
stop, and park the vehicle
right away.If there is no sign of steam, idle the
engine for three minutes while
parked. If the warning is still
displayed, turn off the engine until it
cools down.
Washer Fluid
What to Use
When windshield washer fluid is
needed, be sure to read the
manufacturer's instructions before
use. If operating the vehicle in an
area where the temperature may fall
below freezing, use a fluid that has
sufficient protection against
freezing.
Adding Washer Fluid

Chevrolet Malibu Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12461813) - 2019 - crc - 12/11/18
272 Vehicle Care
Fuses Usage
46 Engine control
module/Ignition
47–
48 Electric brake
boost–HEV/
Cooling fan
49 DC DC battery 2
50–
51–
52–
53–
54–
55–
56 Starter motor
57 Diesel exhaust fluid
heater
58–
59 High-beam
headlamps
60 Cooling fan
61–Fuses Usage
62–
63–
65 Air conditioning–HEV
67–
68–
69–
70–
72 Starter pinion
74–
75 Engine control
module main
76 Engine control module
sense
78 Horn
79 Washer pump
81 Transmission control
module/Engine control
module
82–
83 Ignition coil
84 Powertrain on engineFuses Usage
85 Shunt
86 Shunt
87–
88 Aeroshutter
89–
91–
92 Traction power
inverter module/Motor
generator unit
pump–HEV/
Transmission oil
pump–non HEV
93 Automatic headlamp
leveling
95–
96–
97–
99 Coolant pump
Relays Usage
4–

Chevrolet Malibu Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12461813) - 2019 - crc - 12/11/18
Vehicle Care 297
{Warning
Using the wrong replacement
wheels, wheel bolts, or wheel
nuts can be dangerous. It could
affect the braking and handling of
the vehicle. Tires can lose air,
and cause loss of control, causing
a crash. Always use the correct
wheel, wheel bolts, and wheel
nuts for replacement.
Caution
The wrong wheel can also cause
problems with bearing life, brake
cooling, speedometer or
odometer calibration, headlamp
aim, bumper height, vehicle
ground clearance, and tire or tire
chain clearance to the body and
chassis.
Used Replacement Wheels
{Warning
Replacing a wheel with a used
one is dangerous. How it has
been used or how far it has been
driven may be unknown. It could
fail suddenly and cause a crash.
When replacing wheels, use a
new GM original equipment
wheel.
Tire Chains
{Warning
If the vehicle has 245/45R18 or
245/40R19 size tires, do not use
tire chains. There is not enough
clearance. Tire chains used on a
vehicle without the proper amount
of clearance can cause damage
to the brakes, suspension,
or other vehicle parts. The area
damaged by the tire chains could
(Continued)
Warning (Continued)
cause loss of control and a crash.
Use another type of traction
device only if its manufacturer
recommends it for the vehicle's
tire size combination and road
conditions. Follow that
manufacturer's instructions. To
avoid vehicle damage, drive slow
and readjust or remove the
traction device if it contacts the
vehicle. Do not spin the wheels. If
traction devices are used, install
them on the front tires.
Caution
If the vehicle is equipped with a
tire size other than 245/45R18 or
245/40R19, use tire chains only
where legal and only when
necessary. Use low profile chains
that add no more than 12 mm
thickness to the tire tread and
(Continued)

Chevrolet Malibu Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12461813) - 2019 - crc - 12/11/18
Service and Maintenance 329
Maintenance
Schedule
Owner Checks and Services
At Each Fuel Stop
.
Check the engine oil level. See
Engine Oil0242.
Once a Month
.
Check the tire inflation
pressures. SeeTire Pressure
0284.
.
Inspect the tires for wear. See
Tire Inspection0291.
.
Check the windshield washer
fluid level. SeeWasher Fluid
0254.
Engine Oil Change
When the CHANGE ENGINE OIL
SOON message displays, have the
engine oil and filter changed within
the next 1 000 km/600 mi. If driven
under the best conditions, the
engine oil life system may not
indicate the need for vehicle service
for up to a year. The engine oil andfilter must be changed at least once
a year and the oil life system must
be reset. Your trained dealer
technician can perform this work.
If the engine oil life system is reset
accidentally, service the vehicle
within 5 000 km/3,000 mi since the
last service. Reset the oil life
system when the oil is changed.
SeeEngine Oil Life System0245.
Air Conditioning Desiccant
(Replace Every Seven Years)
The air conditioning system requires
maintenance every seven years.
This service requires replacement of
the desiccant to help the longevity
and efficient operation of the air
conditioning system. This service
can be complex. See your dealer.
Tire Rotation and Required
Services Every 12 000 km/
7,500 mi
Rotate the tires, if recommended for
the vehicle, and perform the
following services. SeeTire
Rotation0291..
Check engine oil level and oil
life percentage. If needed,
change engine oil and filter, and
reset oil life system. SeeEngine
Oil0242and
Engine Oil Life System0245.
.
Check engine coolant level. See
Cooling System (Power
Electronics)0253or
Cooling System (Engine)0248.
.
Check windshield washer fluid
level. SeeWasher Fluid0254.
.
Check tire inflation pressures.
SeeTire Pressure0284.
.
Inspect tire wear. SeeTire
Inspection0291.
.
Visually check for fluid leaks.
.
Inspect engine air cleaner filter.
SeeEngine Air Cleaner/Filter
0247.
.
Inspect brake system. See
Exterior Care0318.
.
Visually inspect steering,
suspension, and chassis
components for damage,
including cracks or tears in the
rubber boots, loose or missing