engine overheat CHEVROLET MALIBU 2006 6.G User Guide

What to Use
Use a mixture of one-half clean, drinkable water and
one-half DEX-COOL®coolant which will not damage
aluminum parts. If you use this coolant mixture, you do
not need to add anything else.
{CAUTION:
Adding only plain water to your cooling
system can be dangerous. Plain water, or
some other liquid such as alcohol, can boil
before the proper coolant mixture will. Your
vehicle’s coolant warning system is set for the
proper coolant mixture. With plain water or the
wrong mixture, your engine could get too hot
but you would not get the overheat warning.
Your engine could catch re and you or others
could be burned. Use a 50/50 mixture of clean,
drinkable water and DEX-COOL
®coolant.Notice:If you use an improper coolant mixture,
your engine could overheat and be badly damaged.
The repair cost would not be covered by your
warranty. Too much water in the mixture can freeze
and crack the engine, radiator, heater core, and
other parts.
If you have to add coolant more than four times a year,
have your dealer check your cooling system.
Notice:If you use extra inhibitors and/or additives in
your vehicle’s cooling system, you could damage
your vehicle. Use only the proper mixture of the
engine coolant listed in this manual for the cooling
system. SeeRecommended Fluids and Lubricants on
page 6-12for more information.
5-27

Adding Coolant
If you need more coolant, add the proper DEX-COOL®
coolant mixture at the surge tank, but only when the
engine is cool. If the surge tank is empty, a special ll
procedure is necessary. SeeEngine Overheating
on page 5-29andCooling System on page 5-32.
{CAUTION:
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.
When replacing the pressure cap, make sure it is
hand-tight and fully seated.
Coolant Surge Tank Pressure Cap
Notice:If the pressure cap is not tightly installed,
coolant loss and possible engine damage may
occur. Be sure the cap is properly and tightly
secured.
Engine Overheating
You will nd an engine coolant temperature gage as
well as an engine coolant temperature warning light on
your vehicle’s instrument panel cluster. SeeEngine
Coolant Temperature Gage on page 3-40andEngine
Coolant Temperature Warning Light on page 3-40.
You will also nd a LOW COOLANT warning message
displayed on your Driver Information Center (DIC).
SeeDIC Warnings and Messages on page 3-50.
5-29

If Steam Is Coming From Your Engine
{CAUTION:
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.
If you keep driving when your engine is
overheated, the liquids in it can catch re.
You or others could be badly burned. Stop
your engine if it overheats, and get out of the
vehicle until the engine is cool.
Notice:If your engine catches re because you
keep driving with no coolant, your vehicle can
be badly damaged. The costly repairs would not
be covered by your warranty.
If No Steam Is Coming From
Your Engine
An overheat warning, along with a LOW COOLANT
message, can indicate a serious problem.
If you get an engine overheat warning with no LOW
COOLANT message, but see or hear no steam, the
problem may not be too serious. Sometimes the engine
can get a little too hot when you:
Climb a long hill on a hot day.
Stop after high-speed driving.
Idle for long periods in traffic.
Tow a trailer.
If you get the overheat warning with no sign of steam,
try this for a minute or so:
1. In heavy traffic, let the engine idle in NEUTRAL (N)
while stopped. If it is safe to do so, pull off the road,
shift to PARK (P) or NEUTRAL (N) and let the
engine idle.
2. Turn on your heater to full hot at the highest fan
speed and open the windows as necessary.
5-30

If you no longer have the overheat warning, you can
drive. Just to be safe, drive slower for about 10 minutes.
If the warning does not come back on, you can drive
normally.
If the warning continues, pull over, stop, and park your
vehicle right away.
If there is still no sign of steam, idle the engine for
three minutes while you are parked. If you still have the
warning, turn off the engine and get everyone out of
the vehicle until it cools down.
You may decide not to lift the hood but to get service
help right away.Overheated Engine Protection
Operating Mode
(3.5L V6 and 3.9L V6 Engines)
This emergency operating mode allows your vehicle to
be driven to a safe place in an emergency situation.
If an overheated engine condition exists, an overheat
protection mode which alternates ring groups of
cylinders helps prevent engine damage. In this mode,
you will notice a signicant loss in power and engine
performance. The temperature gage will indicate
an overheat condition exists. Driving extended
miles (km) and/or towing a trailer in the overheat
protection mode should be avoided.
Notice:After driving in the overheated engine
protection operating mode, to avoid engine damage,
allow the engine to cool before attempting any repair.
The engine oil will be severely degraded. Repair the
cause of coolant loss, change the oil and reset the oil
life system. SeeEngine Oil on page 5-17.
5-31

The coolant level should be at or above the FULL
COLD mark on the front of the coolant surge tank. If it
is not, you may have a leak at the pressure cap or in the
radiator hoses, heater hoses, radiator, water pump, or
somewhere else in the cooling system.
{CAUTION:
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 re, and you could be
burned. Get any leak xed before you drive the
vehicle.If there seems to be no leak, with the engine on, check
to see if the electric engine cooling fans are running.
If the engine is overheating, both fans should be
running. If they are not, your vehicle needs service.
Notice:Engine damage from running your engine
without coolant is not covered by your warranty.
Notice:Using coolant other than DEX-COOL
®may
cause premature engine, heater core or radiator
corrosion. In addition, the engine coolant may
require changing sooner, at 30,000 miles (50 000 km)
or 24 months, whichever occurs rst. Any repairs
would not be covered by your warranty. Always use
DEX-COOL
®(silicate-free) coolant in your vehicle.
5-33

How to Add Coolant to the Coolant
Surge Tank
Notice:This vehicle has a specic coolant ll
procedure. Failure to follow this procedure could
cause your engine to overheat and be severely
damaged.
If you have not found a problem yet, check to see if
coolant is visible in the surge tank. 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, including the coolant surge tank
pressure cap, is cool before you do it. SeeEngine
Coolant on page 5-26for more information.If no coolant is visible in the surge tank, add coolant as
follows:
{CAUTION:
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 coolant
surge tank pressure cap — even a little — they
can come out at high speed. Never turn the
cap when the cooling system, including the
coolant surge tank pressure cap, is hot. Wait
for the cooling system and coolant surge tank
pressure cap to cool if you ever have to turn
the pressure cap.
5-34

{CAUTION:
Adding only plain water to your cooling
system can be dangerous. Plain water, or
some other liquid such as alcohol, can boil
before the proper coolant mixture will. Your
vehicle’s coolant warning system is set for the
proper coolant mixture. With plain water or the
wrong mixture, your engine could get too hot
but you would not get the overheat warning.
Your engine could catch re and you or others
could be burned. Use a 50/50 mixture of clean,
drinkable water and DEX-COOL
®coolant.
Notice:In cold weather, water can freeze and crack
the engine, radiator, heater core and other parts.
Use the recommended coolant and the proper
coolant mixture.
{CAUTION:
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.
1. You can remove the
coolant surge tank
pressure cap when
the cooling system,
including the coolant
surge tank pressure
cap and upper radiator
hose, is no longer hot.
Turn the pressure cap slowly counterclockwise
about two or two and one-half turns. If you hear a
hiss, wait for that to stop. This will allow any pressure
still left to be vented out the discharge hose.
5-35

Headlamp Wiring
The headlamp wiring is protected by fuses, one for
each headlamp, in the fuse block. An electrical overload
will cause the lamps to turn off. If this happens, have
your headlamp wiring checked right away.
Windshield Wiper Fuses
The windshield wiper motor is protected by a circuit
breaker and a fuse. If the motor overheats due to heavy
snow, etc., the wiper will stop until the motor cools.
If the overload is caused by some electrical problem,
have it xed.
Power Windows and Other
Power Options
The power window motors are protected by a circuit
breaker in the motor, and a fuse in the fuse panel. If the
motor overheats due to a heavy load the window will stop
until the motor cools. When the current load is too heavy
the fuse will open, protecting the circuit until the problem
is xed.
Fuses
The wiring circuits in your vehicle are protected from
short circuits by fuses and fusible thermal links in
the wiring itself.
Look at the silver-colored band inside the fuse. If the
band is broken or melted, replace the fuse. Be sure you
replace a bad fuse with a new one of the identical
size and rating.
If you ever have a problem on the road and don’t have
a spare fuse, you can borrow one that has the same
amperage. Just pick a feature of your vehicle that
you can get along without — like the radio or cigarette
lighter — and use its fuse, if it is the correct amperage.
Replace it as soon as you can.
There are three fuse blocks in your vehicle: one in
the center of the instrument panel, one in the engine
compartment and one in the trunk.
There is a fuse puller located on the instrument panel
fuse block. It can be used to easily remove fuses
from the fuse block.
5-99

E
Electrical System
Add-On Equipment......................................5-98
Engine Compartment Fuse Block.................5-102
Fuses........................................................5-99
Headlamp Wiring.........................................5-99
Instrument Panel Fuse Block.......................5-100
Power Windows and Other Power Options......5-99
Rear Compartment Fuse Block....................5-104
Windshield Wiper Fuses...............................5-99
Engine
Air Cleaner/Filter.........................................5-22
Battery.......................................................5-42
Check and Service Engine Soon Light............3-41
Coolant......................................................5-26
Coolant Heater............................................2-26
Coolant Temperature Gage...........................3-40
Coolant Temperature Warning Light................3-40
Engine Compartment Overview......................5-12
Exhaust.....................................................2-36
Oil .............................................................5-17
Oil Life System...........................................5-20
Overheated Protection Operating Mode...........5-31
Overheating................................................5-29
Starting......................................................2-24
Enhanced Traction System (ETS)......................4-11
Active Light................................................3-39
Warning Light.............................................3-39Entry/Exit Lighting...........................................3-19
Event Data Recorders (EDR)............................7-10
Extender, Safety Belt.......................................1-34
Exterior Lamps...............................................3-14
F
Filter
Engine Air Cleaner......................................5-22
Finish Damage...............................................5-96
Fixed Mast Antenna.......................................3-108
Flashers, Hazard Warning.................................. 3-6
Flash-to-Pass................................................... 3-8
Flat Tire........................................................5-71
Flat Tire, Changing.........................................5-72
Flat Tire, Storing.............................5-82, 5-84, 5-86
Fluid
Automatic Transaxle.............................5-23, 5-24
Power Steering...........................................5-36
Windshield Washer......................................5-38
Fog Lamps ....................................................3-18
Folding Seatback, Passenger............................. 1-8
Front Reading Lamps......................................3-20
Fuel............................................................... 5-5
Additives...................................................... 5-6
California Fuel.............................................. 5-6
Filling a Portable Fuel Container....................5-10
Filling Your Tank........................................... 5-8
5

O
Odometer......................................................3-34
Odometer, Trip...............................................3-34
Off-Road Recovery..........................................4-15
Oil
Engine.......................................................5-17
Pressure Light.............................................3-44
Oil, Engine Oil Life System..............................5-20
Older Children, Restraints................................1-34
Online Owner Center........................................ 7-3
OnStar
®System, see OnStar®Manual...............2-44
Other Warning Devices...................................... 3-6
Outlet Adjustment............................................3-31
Outlet(s), Accessory Power...............................3-21
Outside
Convex Mirror.............................................2-43
Power Heated Mirrors..................................2-43
Power Mirrors.............................................2-43
Overheated Engine Protection Operating Mode . . . 5-31
Owner Checks and Services.............................. 6-8
Owners, Canadian............................................... ii
P
Paint, Damage...............................................5-96
Parade Dimming.............................................3-19
Park (P)
Shifting Into................................................2-34
Shifting Out of............................................2-35
Park (P) Headlamps Off in Park (P)..................3-16
Parking
Brake........................................................2-33
Over Things That Burn.................................2-36
Passing.........................................................4-15
PASS-Key
®III+..............................................2-20
PASS-Key®III+ Operation................................2-21
Power ............................................................. 1-3
Accessory Outlet(s)......................................3-21
Door Locks.................................................2-12
Electrical System.........................................5-99
Lift Seat.....................................................1-10
Retained Accessory (RAP)............................2-24
Steering Fluid.............................................5-36
Windows....................................................2-17
Pretensioners, Safety Belt................................1-34
Programmable Automatic Door Locks.................2-13
Q
Questions and Answers About Safety Belts.........1-18
9