2010 CHEVROLET IMPALA heater

{
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 miles)
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 CoolantThe cooling system in the vehicle is filled with
DEX-COOL
®engine coolant. This coolant is designed
to remain in the vehicle for five years or 150,000 miles
(240 000 km), 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, seeEngine
Overheating on page 6-29
6-25

What to Use
{
WARNING:
Adding only plain water to the cooling system can
be dangerous. Plain water, or some other liquid
such as alcohol, can boil before the proper coolant
mixture will. The vehicle’s coolant warning system
is set for the proper coolant mixture. With plain
water or the wrong mixture, the engine could get
too hot but you would not get the 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.Use a 50/50 mixture of clean, drinkable water and
DEX-COOL
®
coolant. If using this mixture, nothing else
needs to be added. This mixture:
•
Gives freezing protection down to−34°F (−37°C),
outside temperature.
•
Gives boiling protection up to 265°F (129°C),
engine temperature.
•
Protects against rust and corrosion.
•
Will not damage aluminum parts.
•
Helps keep the proper engine temperature.
Notice:If an improper coolant mixture is used,
the engine could overheat and be badly damaged.
The repair cost would not be covered by the vehicle
warranty. Too much water in the mixture can
freeze and crack the engine, radiator, heater core,
and other parts.
Notice:If extra inhibitors and/or additives are used
in the vehicle’s cooling system, the vehicle could
be damaged. Use only the proper mixture of
the engine coolant listed in this manual for the
cooling system. SeeRecommended Fluids and
Lubricants on page 7-10for more information.
6-26

If No Steam Is Coming From The
Engine CompartmentIf 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.
If the overheat warning is displayed with no sign of
steam:
1. Turn the air off.
2. Turn the heater on to the highest temperature and
to the highest fan speed. Open the windows as
necessary.3. In heavy traffic, let the engine idle in N (Neutral)
while stopped. If it is safe to do so, pull off the
road, shift to P (Park) or N (Neutral) and let
the engine idle.
If the temperature overheat gage is no longer in the
overheat zone or an overheat warning no longer
displays, the vehicle can be driven. Continue to drive
the vehicle slow for about 10 minutes. Keep a safe
vehicle distance from the car in front of you. If the
warning does not come back on, continue to drive
normally.
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. Also,
see ‘‘Overheated Engine Protection Operating Mode’’
later in this section.
6-31

Electrical System (cont.)
Power Windows and Other Power Options . . . . . . 6-96
Underhood Fuse Block . ................................6-97
Windshield Wiper Fuses...............................6-96
Electronic Immobilizer
PASS-Key
®
III+...........................................3-18
Electronic Immobilizer Operation
PASS-Key
®
III+...........................................3-18
Electronic Stability Control................................. 5-6
Engine
Air Cleaner/Filter.........................................6-19
Check and Service Engine Soon Lamp...........4-31
Compartment Overview................................6-14
Coolant . . ....................................................6-25
Coolant Heater............................................3-23
Coolant Temperature Gage...........................4-30
Coolant Temperature Warning Light................4-30
Cooling System...........................................6-24
Drive Belt Routing.......................................7-12
Exhaust.....................................................3-31
Oil .............................................................6-15
Overheated Protection Operating Mode...........6-32
Overheating................................................6-29
Starting . . ....................................................3-21
Engine Oil
Life System................................................6-18
Entry Lighting . . ...............................................4-12Event Data Recorders.....................................8-19
Extender, Safety Belt.......................................2-31
Exterior Lamps................................................. 4-9
F
Filter
Engine Air Cleaner......................................6-19
Finish Damage...............................................6-94
Flashers, Hazard Warning.................................. 4-3
Flash-to-Pass................................................... 4-5
Flat Tire........................................................6-74
Flat Tire, Changing.........................................6-75
Flat Tire, Storing.............................................6-83
Fluid
Automatic Transmission................................6-22
Power Steering...........................................6-32
Windshield Washer......................................6-33
Fog Lamps
Bulb Replacement.......................................4-11
Light..........................................................4-35
Folding Rear Seat...........................................2-10
Fuel............................................................... 6-5
Additives...................................................... 6-7
California Fuel.............................................. 6-6
E85 (85% Ethanol)........................................ 6-8
5

Fuel (cont.)
Filling a Portable Fuel Container....................6-12
Filling the Tank...........................................6-10
Fuels in Foreign Countries.............................. 6-9
Gage . . . ......................................................4-36
Gasoline Octane........................................... 6-6
Gasoline Specifications.................................. 6-6
Fuel Economy
Driving for Better.........................................1-21
Fuses
Fuses and Circuit Breakers...........................6-96
Instrument Panel Fuse Block.........................6-96
Underhood Fuse Block.................................6-97
Windshield Wiper.........................................6-96
G
Gages
Engine Coolant Temperature.........................4-30
Fuel . . . . . . . . . .................................................4-36
Speedometer . . ............................................4-23
Tachometer . . . . . . ...........................................4-23
Garage Door Opener.......................................3-35
Gasoline
Octane........................................................ 6-6
Specifications ............................................... 6-6
Glove Box .....................................................3-42
GM Mobility Reimbursement Program.................. 8-7
H
Halogen Bulbs................................................6-43
Hazard Warning Flashers................................... 4-3
Head Restraints............................................... 2-2
Headlamp Wiring............................................6-96
Headlamps
Aiming.......................................................6-43
Bulb Replacement.......................................6-43
Daytime Running Lamps/Automatic
Headlamp System....................................4-10
Exterior Lamps............................................. 4-9
Flash-to-Pass............................................... 4-5
Headlamps, Front Turn Signal, Sidemarker,
and Parking Lamps..................................6-44
High/Low Beam Changer................................ 4-5
Heated Seats................................................... 2-6
Heater . ..........................................................4-16
Engine Coolant...........................................3-23
Highbeam On Light.........................................4-36
Highway Hypnosis...........................................5-15
Hill and Mountain Roads..................................5-16
Hood
Checking Things Under................................6-12
Release.....................................................6-13
Horn............................................................... 4-3
How to Wear Safety Belts Properly . . .................2-17
6