2007 CHEVROLET OPTRA 5 coolant temperature

Engine Coolant Heater
Your vehicle may have an engine coolant heater.
In very cold weather, 0°F (−18°C) or colder,
the engine coolant heater can help. You will get
easier starting and better fuel economy during
engine warm-up. Usually, the coolant heater
should be plugged in a minimum of four hours
prior to starting your vehicle. At temperatures
above 32°F (0°C), use of the coolant heater is
not required.
To Use the Engine Coolant Heater
1. Turn off the engine.
2. Open the hood and unwrap the electrical
cord. The cord is located on the driver
side of the engine compartment, behind the
battery.
3. Plug it into a normal, grounded 110-volt AC
outlet.
{CAUTION:
Plugging the cord into an ungrounded
outlet could cause an electrical shock.
Also, the wrong kind of extension cord
could overheat and cause a re. You
could be seriously injured. Plug the cord
into a properly grounded three-prong
110-volt AC outlet. If the cord will not
reach, use a heavy-duty three-prong
extension cord rated for at least 15 amps.
4. Before starting the engine, be sure to unplug
and store the cord as it was before to keep it
away from moving engine parts. If you do
not, it could be damaged.
How long should you keep the coolant heater
plugged in? The answer depends on the outside
temperature, the kind of oil you have, and some
other things. Instead of trying to list everything here,
we ask that you contact your dealer in the area
where you will be parking your vehicle. The dealer
can give you the best advice for that particular area.
109

Hold Mode Light........................................ 170
Engine Coolant Temperature Gage............ 171
Tire Pressure Light.................................... 171
Malfunction Indicator Lamp........................ 172
Oil Pressure Light..................................... 175
Fog Lamp Light......................................... 176
Cruise Control Light.................................. 176
Highbeam On Light................................... 176
Daytime Running Lamps (DRL)
Indicator Light........................................ 176
Door Ajar Light.......................................... 177
Trunk Ajar Light (Hatchback Only)............. 177
Fuel Gage................................................. 177
Low Fuel Warning Light............................ 178Audio System(s)......................................... 178
Radio with CD (MP3/WMA)....................... 180
Radio with Six-Disc CD (MP3/WMA)......... 186
Using an MP3 (Radio with CD Player)...... 194
Using an MP3 (Radio with Six-Disc
Player)................................................... 198
Audio Steering Wheel Controls.................. 202
Radio Reception........................................ 203
Care of Your CDs..................................... 203
Care of the CD Player.............................. 204
Integrated Windshield Antenna.................. 204
Section 3 Instrument Panel
134

Engine Coolant Temperature Gage
Your vehicle has an
engine coolant
temperature gage.
With the ignition turned
to ON, this gage
shows the engine
coolant temperature.
If the gage pointer moves into the red area, your
engine is too hot. It means that your engine
coolant has overheated.
If you have been operating your vehicle under
normal driving conditions, you should pull off the
road, stop your vehicle and turn off the engine
as soon as possible.
SeeEngine Overheating on page 271.
Tire Pressure Light
This light comes on
briefly when you turn
the ignition to RUN.
This light will also come on when one or more of
your tires are significantly underinflated.
Stop and check your tires as soon as it is safe to
do so. If underinflated, inflate to the proper
pressure. SeeTires on page 303for more
information.
This light will flash for about 75 seconds and then
stay on if a problem is detected with the Tire
Pressure Monitor system.
SeeTire Pressure Monitor System on page 312
for more information.
171

Engine Coolant
The cooling system in your vehicle is filled with
DEX-COOL®engine coolant. This coolant is
designed to remain in your vehicle for five years
or 150,000 miles (240 000 km), whichever
occurs first, if you add only DEX-COOL
®extended
life coolant.
The following explains your cooling system and
how to add coolant when it is low. If you have
a problem with engine overheating, seeEngine
Overheating on page 271.
A 50/50 mixture of clean, drinkable water and
DEX-COOL
®coolant will:
•Give freezing protection down to
−34°F (−37°C).
•Give boiling protection up to 265°F (129°C).
•Protect against rust and corrosion.
•Help keep the proper engine temperature.
•Let the warning lights and gages work as
they should.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
the rst maintenance service after each
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.
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.
268

Checking Coolant
The engine coolant surge tank is located in the rear
of the engine compartment on the driver’s side of
the vehicle. SeeEngine Compartment Overview on
page 258for more information on location.
{CAUTION:
Turning the surge tank pressure cap when
the engine and radiator are hot can allow
steam and scalding liquids to blow out
and burn you badly. Never turn the surge
tank pressure cap — even a little — when
the engine and radiator are hot.
To check the engine coolant, the vehicle must be
on a level surface. When your engine is cold,
the coolant level should be between the
Maximum (A) and Minimum (B) marks on the
coolant surge tank. The level rises at engine
operation temperature and drops again when the
engine cools down.
270

Adding Coolant
If you need more coolant, add the proper
DEX-COOL®coolant mixture at the coolant surge
tank, but only when the engine is cool. If the
coolant surge tank is empty, a special fill
procedure is necessary. SeeEngine Overheating
on page 271for instructions on “How to Add
Coolant to the Coolant Surge Tank.”
{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 find a coolant temperature gage on your
vehicle’s instrument panel cluster. SeeEngine
Coolant Temperature Gage on page 171.
271

Windshield Washer Fluid
What to Use
When you need windshield washer fluid, 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 fluid that has sufficient protection against
freezing.
Adding Washer Fluid
Open the cap with the
washer symbol on it.
Add washer fluid until
the tank is full. See
Engine Compartment
Overview on page 258
for reservoir 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.
280

CD, MP3 ............................................194, 198
Center High-Mounted
Stoplamp (CHMSL).........................296, 297
Center Rear Passenger Position,
Safety Belts............................................... 36
Chains, Tire................................................. 323
Charging System Light................................ 167
Check
Engine Light............................................ 172
Checking Things Under the Hood................ 256
Chemical Paint Spotting.............................. 343
Child Restraints
Child Restraint Systems............................. 45
Infants and Young Children........................ 41
Lower Anchors and Tethers for
Children.................................................. 51
Older Children........................................... 38
Securing a Child Restraint in a
Rear Seat Position................................. 59
Securing a Child Restraint in the
Right Front Seat Position........................ 62
Where to Put the Restraint........................ 50
Cigarette Lighter.......................................... 153
Cleaning
Aluminum Wheels.................................... 341
Exterior Lamps/Lenses............................. 340
Fabric/Carpet........................................... 337Cleaning (cont.)
Finish Care.............................................. 340
Inside of Your Vehicle .............................. 335
Instrument Panel, Vinyl, and Other
Plastic Surfaces.................................... 338
Leather.................................................... 338
Tires........................................................ 342
Underbody Maintenance........................... 342
Washing Your Vehicle .............................. 339
Weatherstrips........................................... 339
Windshield and Wiper Blades................... 340
Climate Control System............................... 155
Air Filter, Passenger Compartment........... 159
Outlet Adjustment..................................... 159
Clock.......................................................... 154
Clutch, Hydraulic......................................... 266
Collision Damage Repair............................. 401
Compact Spare Tire.................................... 334
Control of a Vehicle..................................... 210
Convenience Net......................................... 129
Coolant
Engine Temperature Gage........................ 171
Heater, Engine......................................... 109
Surge Tank Pressure Cap........................ 271
Cooling System........................................... 273
Cruise Control............................................. 145
Cruise Control Light.................................... 176
411