coolant temperature CHEVROLET IMPALA 2007 9.G User Guide

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 coolant 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 310.
Cooling System
When you decide it is safe to lift the hood, here is
what you will see:
A. Coolant Recovery Tank
B. Pressure Cap
C. Electric Engine Cooling Fans
3.5L V6 Engine shown, 3.9L Engine similar
326

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
A WASHER FLUID LOW ADD FLUID message will
be displayed on the Driver Information Center (DIC)
when you need to add windshield washer uid to
your vehicle. SeeDIC Warnings and Messages on
page 199for more information.
Open the cap with the
washer symbol on it.
Add washer uid
until the tank is full.
SeeEngine Compartment Overview on page 306
for 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 the washer uid tank only
three-quarters full when it is very cold.
This allows for uid 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
the vehicle’s windshield washer system
and paint.
333

(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 transmission 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/retailer perform this service. See
Engine Coolant on page 320for 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.
(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.
413

Climate Control System............................... 168
Air Filter, Passenger Compartment........... 173
Outlet Adjustment..................................... 172
Clock.......................................................... 216
Collision Damage Repair............................. 437
Comfort Guides, Rear Safety Belt................. 37
Compact Spare Tire.................................... 385
Compass..................................................... 197
Content Theft-Deterrent............................... 107
Control of a Vehicle..................................... 252
Convenience Net......................................... 145
Coolant
Engine Temperature Gage........................ 184
Engine Temperature Warning Light........... 183
Heater, Engine......................................... 115
Cooling System........................................... 326
Courtesy Lamps.......................................... 163
Cruise Control............................................. 157
Cruise Control Light.................................... 189
Cupholder(s)................................................ 144
Customer Assistance Information
Courtesy Transportation........................... 434
Customer Assistance for
Text Telephone (TTY) Users................. 430
Customer Assistance Offices.................... 430Customer Assistance Information (cont.)
Customer Satisfaction Procedure.............. 426
GM Mobility Reimbursement Program...... 431
Reporting Safety Defects to
General Motors..................................... 441
Reporting Safety Defects to the
Canadian Government.......................... 441
Reporting Safety Defects to the
United States Government.................... 440
Roadside Assistance Program.................. 432
Service Publications
Ordering Information.............................. 441
D
Daytime Running Lamps/Automatic
Headlamp System.................................... 162
Defensive Driving........................................ 248
Delayed Entry Lighting................................ 164
Delayed Exit Lighting................................... 165
Delayed Headlamps.................................... 162
DIC Compass.............................................. 197
Disc, MP3................................................... 236
Doing Your Own Service Work.................... 297
Dome Lamp................................................ 164
448

Door
Automatic Door Lock................................ 100
Locks......................................................... 98
Power Door Locks..................................... 99
Programmable Automatic Door Unlock..... 100
Rear Door Security Locks........................ 100
Driver
Position, Safety Belt................................... 24
Driver Information Center (DIC)................... 190
DIC Operation and Displays..................... 191
DIC Vehicle Customization....................... 208
DIC Warnings and Messages................... 199
Driving
At Night................................................... 263
City.......................................................... 267
Defensive................................................. 248
Drunken................................................... 249
Freeway................................................... 268
Hill and Mountain Roads.......................... 270
In Rain and on Wet Roads...................... 264
Rocking Your Vehicle to Get it Out.......... 277
Winter...................................................... 272E
EDR ............................................................ 443
Electrical System
Add-On Equipment................................... 397
Fuses and Circuit Breakers...................... 398
Headlamp Wiring..................................... 397
Instrument Panel Fuse Block................... 398
Power Windows and Other
Power Options...................................... 398
Underhood Fuse Block............................. 400
Windshield Wiper Fuses........................... 397
Engine
Air Cleaner/Filter...................................... 316
Check and Service Engine Soon Light..... 185
Coolant.................................................... 320
Coolant Heater......................................... 115
Coolant Temperature Gage...................... 184
Coolant Temperature Warning Light.......... 183
Drive Belt Routing.................................... 420
Engine Compartment Overview................ 306
Exhaust................................................... 124
449

G
Gage
Engine Coolant Temperature.................... 184
Fuel......................................................... 190
Speedometer........................................... 176
Tachometer.............................................. 176
Garage Door Opener................................... 133
Gasoline
Octane..................................................... 298
Specications........................................... 299
Glove Box................................................... 144
GM Mobility Reimbursement Program.......... 431
H
Hazard Warning Flashers............................ 152
Head Restraints............................................ 13
Headlamp
Aiming..................................................... 343
Headlamp Wiring......................................... 397Headlamps
Bulb Replacement.................................... 343
Daytime Running Lamps/Automatic
Headlamp System................................ 162
Delayed................................................... 162
Exterior Lamps......................................... 160
Flash-to-Pass........................................... 155
Halogen Bulbs......................................... 344
Headlamps, Front Turn Signal,
Sidemarker, and Parking Lamps ........... 344
High/Low Beam Changer......................... 155
Heated Seats................................................ 10
Heater......................................................... 168
Highbeam On Light..................................... 189
Highway Hypnosis....................................... 270
Hill and Mountain Roads............................. 270
Hood
Checking Things Under............................ 304
Release................................................... 305
Horn............................................................ 152
How to Use This Manual................................ 4
How to Wear Safety Belts Properly............... 23
451

I
Ignition Positions......................................... 112
Infants and Young Children, Restraints.......... 43
Ination - Tire Pressure............................... 359
Instrument Panel
Overview.................................................. 150
Instrument Panel (I/P)
Brightness................................................ 163
Cluster..................................................... 175
J
Jump Starting.............................................. 338
K
Keyless Entry System................................... 90
Keys............................................................. 89
L
Labeling, Tire Sidewall................................. 352
Lamps
Courtesy.................................................. 163
Dome....................................................... 164
Reading................................................... 165
LATCH System
Child Restraints......................................... 54
License Plate Lamps................................... 348
Light
Airbag Readiness..................................... 178
Anti-Lock Brake System Warning............. 182
Brake System Warning............................. 181
Charging System..................................... 181
Cruise Control.......................................... 189
Engine Coolant Temperature Warning....... 183
Fog Lamp................................................ 189
Highbeam On.......................................... 189
Malfunction Indicator................................ 185
Oil Pressure............................................. 188
Passenger Airbag Status Indicator............ 179
452