2007 CHEVROLET COBALT heating

Hydraulic Clutch
The hydraulic clutch linkage in your vehicle is
self-adjusting. This system does not have its own
reservoir. It receives uid from the brake master
cylinder reservoir.
SeeBrakes on page 318for more information.
Engine Coolant
The cooling system in your vehicle is lled with
DEX-COOL®engine coolant. This coolant is
designed to remain in your vehicle for ve years or
150,000 miles (240 000 km), whichever occurs
rst, 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 309.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.
302

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 ll procedure is
necessary. SeeEngine Overheating on page 309
for 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.
305

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.
The coolant surge tank pressure cap must be fully
installed on the coolant surge tank. SeeEngine
Compartment Overview on page 290for more
information on location.
Engine Overheating
You will nd an engine coolant temperature
warning light on your vehicle’s instrument panel.
SeeEngine Coolant Temperature Warning
Light on page 174for more information.
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.
309

CAUTION: (Continued)
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 your vehicle is equipped with the 2.2L or
2.4L L4 engine and there seems to be no leak,
with the engine on, check to see if the electric
engine cooling fan is running. If the engine is
overheating, the fan should be running. If it is not,
your vehicle needs service.
If your vehicle is equipped with the
2.0L L4 Supercharged engine and 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, the 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 could 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.
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 coolant surge tank.
If coolant is visible but the coolant level is not at the
COLD FILL line, 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 302for more information.
313

Tires
Your new vehicle comes with high-quality tires
made by a leading tire manufacturer. If you ever
have questions about your tire warranty and where
to obtain service, see your GM Warranty booklet
for details. For additional information refer to
the tire manufacturer’s booklet included with
your vehicle.
{CAUTION:
Poorly maintained and improperly
used tires are dangerous.
Overloading your tires can cause
overheating as a result of too much
friction. You could have an air-out and
a serious accident. SeeLoading Your
Vehicle on page 259.
CAUTION: (Continued)
CAUTION: (Continued)

Underinated tires pose the same
danger as overloaded tires. The
resulting accident could cause serious
injury. Check all tires frequently to
maintain the recommended pressure.
Tire pressure should be checked when
your tires are cold. SeeInflation - Tire
Pressure on page 347.
Overinated tires are more likely
to be cut, punctured, or broken by
a sudden impact — such as when
you hit a pothole. Keep tires at the
recommended pressure.
Worn, old tires can cause accidents. If
your tread is badly worn, or if your tires
have been damaged, replace them.
SeeHigh-Speed Operation on page 349
for ination pressure adjustment for high
speed driving.
338

Fuses Usage
1 Fuse Puller
2 Empty
3 Empty
4 Empty
5 Empty
6 Amplier
Fuses Usage
7 Cluster
8 Ignition Switch, PASS-Key
®III+
9 Stoplamp
10Heating, Ventilation, Air
Conditioning, PASS-Key
®III+
11 Empty
12 Spare
13 Airbag
14 Spare
15 Windshield Wiper
16 Climate Control System, Ignition
17 Empty
18 Empty
19Electric Power Steering,
Steering Wheel Control
20 Sunroof
21 Spare
22 Empty
385

Driving
At Night................................................... 243
City.......................................................... 248
Defensive................................................. 226
Drunken................................................... 227
Freeway................................................... 249
Hill and Mountain Roads.......................... 252
In Rain and on Wet Roads...................... 244
Rocking Your Vehicle to Get it Out.......... 259
Winter...................................................... 254
E
Easy Entry Seat............................................ 15
EDR ............................................................ 432
Electrical System
Add-On Equipment................................... 383
Engine Compartment Fuse Block............. 386
Floor Console Fuse Block........................ 384
Fuses and Circuit Breakers...................... 384
Headlamp Wiring..................................... 383
Power Windows and Other
Power Options...................................... 383
Windshield Wiper Fuses........................... 383Engine
Air Cleaner/Filter...................................... 300
Check and Service Engine Soon Light..... 174
Coolant.................................................... 302
Coolant Heater......................................... 117
Coolant Temperature Warning Light.......... 174
Drive Belt Routing.................................... 409
Engine Compartment Overview................ 290
Exhaust................................................... 128
Oil ........................................................... 293
Oil Life System........................................ 298
Overheating............................................. 309
Running While Parked............................. 129
Starting.................................................... 115
Enhanced Traction System (ETS)................ 234
Warning Light........................................... 173
Entry/Exit Lighting....................................... 155
Event Data Recorders................................. 433
Extender, Safety Belt..................................... 39
439