2005 CHEVROLET IMPALA coolant temperature

Overheated Engine Protection
Operating Mode
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 low coolant light may come on
and 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 5-18.
Cooling System
When you decide it is safe to lift the hood, here is what
you will see:
A. Engine Coolant Recovery Tank
B. Electric Engine Cooling Fans
C. Radiator Pressure Cap3400 V6 Engine
5-34

Windshield Washer Fluid
What to Use
When you need windshield washer uid, be sure to read
the manufacturer’s instructions before use. If you will
be operating your vehicle in an area where the
temperature may fall below freezing, use a uid that has
sufficient protection against freezing.
Adding Washer Fluid
When this message is displayed in the message center,
it means the vehicle is low on windshield washer
uid. You should add more windshield washer uid
soon. SeeLow Washer Fluid Warning Message
on page 3-46for more information.Open the cap with the
washer symbol on it.
Add washer uid until the
tank is full. SeeEngine
Compartment Overview
on page 5-12for more
information on location.
Notice:
When using concentrated washer uid,
follow the manufacturer’s instructions for
adding water.
Do not mix water with ready-to-use washer uid.
Water can cause the solution to freeze and
damage your washer uid tank and other parts
of the washer system. Also, water does not
clean as well as washer uid.
Fill your washer uid tank only three-quarters
full when it is very cold. This allows for
expansion if freezing occurs, which could
damage the tank if it is completely full.
Do not use engine coolant (antifreeze) in your
windshield washer. It can damage your washer
system and paint. United States
Canada
5-44

(e)Make sure the safety belt reminder light and all
belts, buckles, latch plates, retractors, and anchorages
are working properly. Look for any other loose or
damaged safety belt system parts. If you see anything
that might keep a safety belt system from doing its
job, have it repaired. Have any torn or frayed safety belts
replaced. Also look for any opened or broken airbag
coverings, and have them repaired or replaced.
The airbag system does not need regular maintenance.
(f)Lubricate all key lock cylinders. Lubricate all
hinges and latches, including those for the body doors,
hood, secondary latch, pivots, spring anchor, release
pawl, rear compartment, glove box door, console door,
and any folding seat hardware. More frequent
lubrication may be required when exposed to a corrosive
environment. Applying silicone grease on weatherstrips
with a clean cloth will make them last longer, seal
better, and not stick or squeak.
(g)If you drive regularly under dusty conditions, the
lter may require replacement more often.
(h)Change automatic transaxle uid and lter if the
vehicle is mainly driven under one or more of these
conditions:
In heavy city traffic where the outside temperature
regularly reaches 90°F (32°C) or higher.
In hilly or mountainous terrain.
When doing frequent trailer towing.
Uses such as found in taxi, police, or delivery
service.(i)Drain, ush, and rell cooling system. This service
can be complex; you should have your dealer perform
this service. See Engine Coolant on page 5-29 for
what to use. Inspect hoses. Clean radiator, condenser,
pressure cap, and ller neck. Pressure test the
cooling system and pressure cap.
(j)Check throttle system for interference or binding and
for damaged or missing parts. Replace parts as
needed. Replace any components that have high effort
or excessive wear. Do not lubricate accelerator or
cruise control cables.
(k)A uid loss in any vehicle system could indicate a
problem. Have the system inspected and repaired
and the uid level checked. Add uid if needed.
(l)For supercharged engines only: Check the
supercharger oil level and add the proper supercharger
oil as needed (or every 36 months, whichever occurs
rst). See Recommended Fluids and Lubricants on
page 6-12.
(m)If you drive regularly under dusty conditions, inspect
the lter at each engine oil change.
(n)Visually inspect belt for fraying, excessive cracks, or
obvious damage. Replace belt if necessary.
6-8

Check
Engine Light...............................................3-35
Checking Things Under the Hood......................5-10
Chemical Paint Spotting...................................5-96
Child Restraints
Child Restraint Systems...............................1-35
Infants and Young Children...........................1-31
Lower Anchorages and Top Tethers for
Children (LATCH System)..........................1-42
Older Children.............................................1-29
Securing a Child Restraint Designed for
the LATCH System...................................1-44
Securing a Child Restraint in a
Rear Seat Position...................................1-44
Securing a Child Restraint in the
Right Front Seat Position..........................1-47
Top Strap...................................................1-40
Top Strap Anchor Location............................1-41
Where to Put the Restraint...........................1-38
Chime Level Adjustment..................................3-91
Cigarette Lighter.............................................3-20
Cleaning
Aluminum Wheels........................................5-95
Exterior Lamps/Lenses.................................5-93
Fabric/Carpet..............................................5-91
Finish Care.................................................5-94Cleaning (cont.)
Inside of Your Vehicle..................................5-89
Instrument Panel, Vinyl, and Other Plastic
Surfaces.................................................5-92
Leather......................................................5-92
Tires..........................................................5-95
Underbody Maintenance...............................5-96
Washing Your Vehicle...................................5-93
Weatherstrips..............................................5-93
Windshield and Wiper Blades........................5-94
Climate Control System
Air Filter, Passenger Compartment.................3-25
Dual..........................................................3-21
Outlet Adjustment........................................3-24
Comfort Guides, Rear Safety Belt.....................1-26
Compact Spare Tire........................................5-88
Content Theft-Deterrent....................................2-14
Control of a Vehicle.......................................... 4-6
Convenience Net............................................2-37
Coolant
Engine Temperature Gage............................3-34
Heater, Engine............................................2-19
Hot Temperature Warning Message................3-42
Cooling System..............................................5-34
Courtesy Lamps.............................................3-17
Cruise Control................................................3-11
3

Electrical System (cont.)
Power Windows and Other Power Options......5-99
Underhood Fuse Block...............................5-103
Windshield Wiper Fuses...............................5-99
Engine
Air Cleaner/Filter.........................................5-25
Battery.......................................................5-48
Change Oil Message...................................3-44
Check and Service Engine Soon Light............3-35
Coolant......................................................5-29
Coolant Heater............................................2-19
Coolant Temperature Gage...........................3-34
Engine Compartment Overview......................5-12
Exhaust.....................................................2-26
Low Oil Level Message................................3-43
Oil .............................................................5-18
Oil Life System...........................................5-21
Overheated Protection Operating Mode...........5-34
Overheating................................................5-32
Starting......................................................2-17
Supercharger Oil.........................................5-24
Entry Lighting.................................................3-17
Event Data Recorders (EDR)............................. 7-9
Extender, Safety Belt.......................................1-28
Exterior Lamps...............................................3-14F
Filter
Engine Air Cleaner......................................5-25
Finish Damage...............................................5-96
Flash-to-Pass................................................... 3-9
Flat Tire........................................................5-77
Flat Tire, Changing.........................................5-78
Flat Tire, Storing.............................................5-86
Fluid
Automatic Transaxle.....................................5-26
Power Steering...........................................5-43
Windshield Washer......................................5-44
Fog Lamps....................................................3-16
Folding Rear Seat............................................ 1-6
Front Storage Area.........................................2-36
Fuel............................................................... 5-5
Additives...................................................... 5-6
California Fuel.............................................. 5-6
Filling a Portable Fuel Container....................5-10
Filling Your Tank........................................... 5-8
Fuels in Foreign Countries.............................. 5-7
Gage.........................................................3-39
Gasoline Octane........................................... 5-5
Gasoline Specications.................................. 5-6
Low Warning Message.................................3-47
5

Fuses
Fuses and Circuit Breakers...........................5-99
Instrument Panel Fuse Block.......................5-100
Underhood Fuse Block...............................5-103
Windshield Wiper.........................................5-99
G
Gage
Engine Coolant Temperature.........................3-34
Fuel..........................................................3-39
Speedometer..............................................3-30
Tachometer.................................................3-30
Garage Door Opener.......................................2-32
Gasoline
Octane........................................................ 5-5
Specications............................................... 5-6
Glove Box.....................................................2-36
GM Mobility Reimbursement Program.................. 7-5
H
Hazard Warning Flashers................................... 3-6
Head Restraints............................................... 1-6
Headlamp
Aiming.......................................................5-54Headlamp Wiring............................................5-99
Headlamps
Bulb Replacement.......................................5-54
Daytime Running Lamps/Automatic
Headlamp System....................................3-16
Delayed.....................................................3-15
Flash-to-Pass............................................... 3-9
Halogen Bulbs............................................5-54
Headlamps, Front Turn Signal, and
Parking Lamps.........................................5-55
High/Low Beam Changer................................ 3-8
Heated Seats................................................... 1-4
Heater...........................................................3-21
Highbeam On Light.........................................3-38
Highbeam Out Warning Message......................3-48
Highway Hypnosis...........................................4-23
Hill and Mountain Roads..................................4-23
HomeLink
®Wireless Control System.................2-32
HomeLink®Wireless Control System
Operation...................................................2-32
Hood
Checking Things Under................................5-10
Release.....................................................5-11
Horn............................................................... 3-6
Hot Coolant Temperature Warning Message........3-42
How to Use This Manual...................................... ii
How to Wear Safety Belts Properly...................1-13
6

Locks
Door........................................................... 2-8
Lockout Protection.......................................2-10
Power Door.................................................. 2-9
Programmable Automatic Door Locks............... 2-9
Loss of Control...............................................4-15
Low Brake Fluid Warning Message....................3-47
Low Engine Oil Level Message.........................3-43
Low Fuel Warning Message.............................3-47
Low Oil Pressure Message...............................3-42
Low Tire Message..........................................3-44
Low Washer Fluid Warning Message.................3-46
Lumbar
Manual Controls............................................ 1-3
M
Maintenance Schedule
Additional Required Services........................... 6-6
At Each Fuel Fill........................................... 6-9
At Least Once a Month.................................. 6-9
At Least Once a Year..................................6-10
Introduction.................................................. 6-2
Maintenance Footnotes.................................. 6-7
Maintenance Record....................................6-14
Maintenance Requirements............................. 6-2
Normal Maintenance Replacement Parts.........6-13Maintenance Schedule (cont.)
Owner Checks and Services........................... 6-9
Recommended Fluids and Lubricants.............6-12
Scheduled Maintenance................................. 6-4
Using.......................................................... 6-2
Your Vehicle and the Environment................... 6-2
Malfunction Indicator Light................................3-35
Manual Lumbar Controls.................................... 1-3
Manual Seats................................................... 1-2
Message
Battery Warning..........................................3-41
Center.......................................................3-40
Change Engine Oil......................................3-44
Door Ajar Warning.......................................3-45
Highbeam Out Warning................................3-48
Hot Coolant Temperature Warning..................3-42
Low Brake Fluid Warning..............................3-47
Low Engine Oil Level...................................3-43
Low Fuel Warning.......................................3-47
Low Oil Pressure.........................................3-42
Low Tire .....................................................3-44
Low Washer Fluid Warning...........................3-46
Security.....................................................3-46
Service Traction System Warning...................3-40
Service Vehicle Soon...................................3-48
Traction Active............................................3-41
Trunk Ajar Warning......................................3-45
8