2008 CHEVROLET COBALT air conditioning

To replace the battery in the RKE transmitter:
1. Separate the halves of the transmitter with a at,
thin object inserted into the notch on the side.
2. Remove the old battery. Do not use a metal object.
3. Insert the new battery, positive side facing up.
Replace with a CR2032 or equivalent battery.
4. Put the transmitter back together tightly.
Remote Vehicle Start
Your vehicle may have a remote start feature. This
feature allows you to start the engine from outside the
vehicle. It may also start the vehicle’s heating or air
conditioning systems. When you start your vehicle using
the remote start feature, the climate control system
will come on and adjust the interior to the temperature
settings that you left it set to when you turned the
vehicle off.
Laws in some communities may restrict the use of
remote starters. For example, some laws may require
a person using remote start to have the vehicle in
view when doing so. Check local regulations for any
requirements on remote starting of vehicles.
Do not use the remote start feature if your vehicle is
low on fuel. Your vehicle may run out of fuel.
The remote start feature provides two separate starts
per ignition cycle, each with 10 minutes of engine
running time.
2-7

Climate Controls
Climate Control System
The heating, cooling, and ventilation for the vehicle can
be controlled with this system.
Operation
To change the current mode, select one of the following:
H(Vent):The air is directed though the instrument
panel outlets.
)(Bi-Level):The air is split between the instrument
panel outlets and the oor outlets. Cooler air is
directed to the upper outlets and warmer air to the oor
outlets.
6(Floor):Most of the air is directed through the oor
outlets with some air directed to the windshield and
side windows.
The left knob can also be used to select defog or
defrost mode. Information on defogging and defrosting
can be found later in this section.
9(Fan):Turn the center knob clockwise or
counterclockwise to increase or decrease the fan speed.
In any setting other than off, the fan will run continuously
with the ignition on. The fan must be turned on to run
the air conditioning compressor.
9(Off):To turn the fan off, turn the knob all the way
counterclockwise to the off position. Vehicles with Air Conditioning shown,
without Air Conditioning similar
3-18

Temperature Control:Turn the right knob clockwise
or counterclockwise to increase or decrease the
temperature inside the vehicle.
h(Recirculation):Press this button to prevent
outside air and odors from entering the vehicle or to help
heat or cool the air inside the vehicle more quickly.
An indicator light above the button will come on in this
mode. The air conditioning compressor also comes on.
This mode is not available for oor, defog and defrost
modes. When the recirculation button is pressed, the
recirculate indicator light will ash ve times and outside
air will be delivered. Operation in this mode during
periods of high humidity and cool outside temperatures
may result in increased window fogging. If window
fogging is experienced, select the defrost mode.
Outside Air:This mode allows outside air to circulate
through the vehicle. This mode is automatically
active if recirculate is not selected. There is no button
for outside air.
#(Air Conditioning):If your vehicle has air
conditioning, press this button to turn the air conditioning
system on or off. When this button is pressed, an
indicator light above the button comes on to show that
the air conditioning is activated.On hot days, open the windows to let hot inside air
escape; then close them. This helps to reduce the time
it takes for the vehicle to cool down. It also helps the
system to operate more efficiently.
For quick cool down on hot days:
1. Select the
Hmode.
2. Select the
hmode.
3. Select
#.
4. Select the coolest temperature.
5. Select the highest fan speed.
Using these settings together for long periods of time
may cause the air inside of the vehicle to become
too dry. To prevent this from happening, after the air in
the vehicle has cooled, turn off the recirculation by
pressing the button again.
The air conditioning system removes moisture from the
air, so a small amount of water might drip underneath
the vehicle while idling or after turning off the engine.
This is normal.
The air conditioning compressor cannot be turned on
when the fan is off.
3-19

Defogging and Defrosting
Fog on the inside of windows is a result of high humidity
(moisture) condensing on the cool window glass.
This can be minimized if the climate control system is
used properly. There are two modes to clear fog or frost
from the windshield and side windows. When either
the defrost or defog mode is selected the system runs
the air conditioning compressor.
Turn the left knob to select the defog or defrost mode.
-(Defog):Use the defog mode to clear the windows
of fog or moisture and warm the passengers. Half of
the air is directed to the windshield and side window
outlets and the remaining to the oor outlets. To defog
the windows faster, turn the temperature control
knob clockwise to the warmest setting.
0(Defrost):Use the defrost mode to remove fog or
frost from the windshield more quickly. Most of the
air is directed to the windshield, with some air directed
to the side window outlets and the oor outlets.
To defrost the windows faster, turn the temperature
control knob clockwise to the warmest setting.
For best results, clear all snow and ice from the
windshield before defrosting.
Rear Window Defogger
The rear window defogger uses a warming grid to
remove fog from the rear window.
The rear window defogger will only work when the
ignition is in ON/RUN.
<(Rear):Press the button to turn the rear window
defogger on or off. Be sure to clear as much snow from
the rear window as possible. An indicator light above
the button comes on to show that the rear window
defogger is activated.
The rear window defogger turns off about 15 minutes
after the button is pressed. If turned on again, the
defogger only runs for about seven minutes before
turning off. If the vehicle is moving faster than 50 mph
(80 kph), the rear defogger will stay on. The defogger
can also be turned off by pressing the button again or by
turning off the engine.
Notice:Do not use anything sharp on the inside
of the rear window. If you do, you could cut or
damage the warming grid, and the repairs would not
be covered by your warranty. Do not attach a
temporary vehicle license, tape, a decal or anything
similar to the defogger grid.
3-20

Turn Signals When Towing a Trailer
When you tow a trailer, your vehicle may need a
different turn signal asher and/or extra wiring. Check
with your dealer/retailer. The arrows on your instrument
panel will ash whenever you signal a turn or lane
change. Properly hooked up, the trailer lamps will also
ash, telling other drivers you are about to turn,
change lanes or stop.
When towing a trailer, the arrows on your instrument
panel will ash for turns even if the bulbs on the trailer
are burned out. Thus, you may think drivers behind
you are seeing your signal when they are not. It is
important to check occasionally to be sure the trailer
bulbs are still working.
Driving on Grades
Notice:Do not tow on steep continuous grades
exceeding 6 miles (9.6 km). Extended, higher
than normal engine and transmission temperatures
may result and damage your vehicle. Frequent
stops are very important to allow the engine and
transmission to cool.
Reduce speed and shift to a lower gearbeforeyou start
down a long or steep downgrade. If you do not shift
down, you might have to use your brakes so much that
they would get hot and no longer work well.
Pay attention to the engine coolant gage. If the indicator
is in the red area, turn off the air conditioning to reduce
engine load. SeeEngine Overheating on page 5-23.
When towing under severe conditions such as hot
ambient temperatures or steep grades, your vehicle may
experience more transmission shifting. A COOLING
MODE ON message may also appear in the DIC.
This alerts the driver that the shifting mode is in progress
and is aiding engine cooling. SeeDIC Warnings and
Messages on page 3-43for more information.
4-39

(B) Tire Width:The three-digit number indicates
the tire section width in millimeters from sidewall
to sidewall.
(C) Aspect Ratio
:A two-digit number that
indicates the tire height-to-width measurements.
For example, if the tire size aspect ratio is 60,
as shown in item C of the illustration, it would
mean that the tire’s sidewall is 60 percent as
high as it is wide.
(D) Construction Code
:A letter code is used to
indicate the type of ply construction in the tire.
The letter R means radial ply construction; the
letter D means diagonal or bias ply construction;
and the letter B means belted-bias ply construction.
(E) Rim Diameter
:Diameter of the wheel
in inches.
(F) Service Description
:These characters
represent the load range and speed rating of
the tire. The load index represents the load carry
capacity a tire is certied to carry. The load
index can range from 1 to 279. The speed
rating is the maximum speed a tire is certied to
carry a load. Speed ratings range from A to Z.
Tire Terminology and Denitions
Air Pressure:The amount of air inside the
tire pressing outward on each square inch of
the tire. Air pressure is expressed in pounds
per square inch (psi) or kilopascal (kPa).
Accessory Weight
:This means the combined
weight of optional accessories. Some examples of
optional accessories are, automatic transmission,
power steering, power brakes, power windows,
power seats, and air conditioning.
Aspect Ratio
:The relationship of a tire’s height
to its width.
Belt
:A rubber coated layer of cords that is
located between the plies and the tread. Cords
may be made from steel or other reinforcing
materials.
Bead
:The tire bead contains steel wires wrapped
by steel cords that hold the tire onto the rim.
Bias Ply Tire
:A pneumatic tire in which the plies
are laid at alternate angles less than 90 degrees
to the centerline of the tread.
Cold Tire Pressure
:The amount of air pressure
in a tire, measured in pounds per square inch (psi)
or kilopascals (kPa) before a tire has built up heat
from driving. SeeInflation - Tire Pressure on
page 5-56.
5-53

Fuses Usage
1 Fuse Puller
2 Empty
3 Empty
4 Empty
5 Empty
6 Amplier
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
5-107

Fuses Usage
EXH Exhaust Emissions
ENG VLV SOL Engine Valve Solenoid
INJ Injectors
AIR SOL Air Solenoid
Blank Blank
PCM/ECMPowertrain Control Module/
Engine Control Module
EPS Electric Power Steering
AIR PUMP AIR Pump
PRK LAMP Parking Lamps
WPR Windshield Wiper
IP IGN Ignition
A/C CLTCH Air Conditioning Clutch
CHMSL Center High Mount Stop Lamp
ABS2 Antilock Brake System 2Fuses Usage
Blank Blank
ECM/TRANSEngine Control Module,
Transmission
BCK UP Back-Up Lamps
TRUNK/HTD
SEATSTrunk, Heated Seats
Blank Blank
Blank Blank
SDMSensing Diagnostic Module
(Airbags)
ABS3 Antilock Brake System 3
OUTLET Auxiliary Power Outlet
MIR Mirrors
DLC Data Link Connector
CNSTR VENT Canister Vent
5-110