2008 CHEVROLET COBALT transmission

AUTO UNLK (Unlock)
This feature, which allows the vehicle to automatically
unlock certain doors, can be enabled or disabled.
When AUTO UNLK appears on the display, press and
hold the reset button for at least one second to
scroll through the available settings:
ALL (default):All of the doors will automatically unlock.
DRIVER:The driver’s door will automatically unlock.
NONE:None of the doors will automatically unlock.
You will need to manually unlock the doors.
If you have a manual transmission vehicle, the door(s)
will automatically unlock when the ignition is turned off.
If you have an automatic transmission vehicle, you can
select when the automatic unlocking will occur.
See “UNLK (Unlock) (Automatic Transmission Only)”
following.
SeeProgrammable Automatic Door Unlock on page 2-11
for more information.
To select a setting and move on to the next feature,
press the information button while the desired setting is
displayed on the DIC.
UNLK (Unlock)
(Automatic Transmission Only)
This screen displays only if your vehicle has an
automatic transmission and DRIVER or ALL is selected
for the AUTO UNLK feature. This feature determines
when the automatic door unlocking will occur. When
UNLK appears on the display, press and hold the reset
button for at least one second to scroll through the
available settings:
KEY OFF:The door(s) will unlock when the key is
turned off.
SHIFT TO P (Park) (default):The door(s) will unlock
when the vehicle is shifted into PARK (P).
SeeProgrammable Automatic Door Unlock on
page 2-11for more information.
To select a setting and move on to the next feature,
press the information button while the desired setting is
displayed on the DIC.
3-52

Your Driving, the Road, and Your Vehicle..........4-2
Defensive Driving...........................................4-2
Drunk Driving.................................................4-2
Control of a Vehicle........................................4-3
Braking.........................................................4-4
Antilock Brake System (ABS)...........................4-5
Braking in Emergencies...................................4-6
Traction Control System (TCS).........................4-6
Enhanced Traction System (ETS).....................4-9
Electronic Stability Control (ESC)....................4-10
Steering......................................................4-12
Off-Road Recovery.......................................4-15
Passing.......................................................4-15
Loss of Control.............................................4-15
Racing or Other Competitive Driving................4-17Driving at Night............................................4-17
Driving in Rain and on Wet Roads..................4-18
Before Leaving on a Long Trip.......................4-19
Highway Hypnosis........................................4-20
Hill and Mountain Roads................................4-20
Winter Driving..............................................4-21
If Your Vehicle is Stuck in Sand, Mud,
Ice, or Snow.............................................4-26
Rocking Your Vehicle to Get It Out.................4-26
Loading Your Vehicle....................................4-27
Towing..........................................................4-32
Towing Your Vehicle.....................................4-32
Recreational Vehicle Towing...........................4-32
Towing a Trailer (Manual Transmission)...........4-34
Towing a Trailer (Automatic Transmission)........4-34
Section 4 Driving Your Vehicle
4-1

Traction Control Operation
Traction control limits wheel spin by reducing engine
power to the wheels (engine speed management)
and by applying brakes to each individual wheel
(brake-traction control) as necessary.
The traction control system is enabled automatically
when you start your vehicle, and it will activate and ash
the ESC/TCS light and display the LOW TRACTION
message if it senses that any of the wheels are spinning
or beginning to lose traction while driving. For more
information on the LOW TRACTION message,
seeDriver Information Center (DIC) on page 3-40.
Notice:If you allow the wheel(s) of one axle to spin
excessively while the ESC/TCS, ABS and Brake
warning lights and the SERVICE ESC and/or
SERVICE TRACTION messages are displayed, you
could damage the differential. The repairs would not
be covered by your warranty. Reduce engine
power and do not spin the wheel(s) excessively
while these lights and this message are displayed.Notice:When traction control is turned off, or
Competitive Driving Mode is active, it is possible to
lose traction. If you attempt to shift with the front
wheels spinning with a loss of traction, it is possible
to cause damage to the transmission. Do not
attempt to shift when the front wheels do not have
traction. Damage caused by misuse of the vehicle
is not covered. See your warranty book for
additional information.
The traction control system may activate on dry or
rough roads or under conditions such as heavy
acceleration while turning or abrupt upshifts/downshifts
of the transmission. When this happens, you may notice
a reduction in acceleration, or may hear a noise or
vibration. This is normal.
If your vehicle is in cruise control while the system
activates, the ESC/TCS light ashes and the cruise
control automatically disengages. When road conditions
allow you to use cruise control again, you may
re-engage the cruise control. SeeCruise Control on
page 3-10.
Adding non-dealer/non-retailer accessories can affect
your vehicle’s performance. SeeAccessories and
Modifications on page 5-3for more information.
4-8

Enhanced Traction System (ETS)
Your vehicle may have an Enhanced Traction System
(ETS) that limits wheel spin. This is especially useful in
slippery road conditions. The system operates only if
it senses that one or both of the front wheels are
spinning or beginning to lose traction. When this
happens, the system reduces engine power and may also
upshift the transmission to limit wheel spin. You may feel
or hear the system working, but this is normal.
If your vehicle has ETS, there is not an ESC/TCS
button on the instrument panel. To turn the system off,
shift to LOW (L) or REVERSE (R). There is more
information about how to turn the system off later in
this section.
The light below ashes and a LOW TRACTION
message will appear on the Driver Information Center
(DIC) when the traction control system is actively limiting
wheel spin. You may feel or hear the system working,
but this is normal. Slippery road conditions may
exist if this message is displayed, so adjust your driving
accordingly.
If your vehicle is in cruise control when the ETS begins
to limit wheel spin, the cruise control will automatically
disengage. When road conditions allow you to safely
use it again, you may re-engage the cruise control.
SeeCruise Control on page 3-10.The ETS indicator/warning light may come on for the
following reasons:
The indicator/warning light ashes while the traction
control system is limiting wheel spin.
If you turn the system off by moving the shift lever to
LOW (L), the indicator/warning light will come on and
stay on. To turn the system back on, move the shift
lever back to a position other than LOW (L). The
indicator/warning light should go off.
The indicator/warning light will come on when you set
your parking brake with the engine running, and it will
stay on if your parking brake does not release fully. If
the transmission shift lever is in any position other
than LOW (L) and the indicator/warning light stays on
after your parking brake is fully released, it means
there is a problem with the system.
If the traction control system is affected by an engine
related problem, the system will turn off and the
indicator/warning light will come on.
4-9

If the ETS indicator/warning light comes on and stays
on for an extended period of time when the transmission
shift lever is in any position other than LOW (L), your
vehicle may need service.
When this light is on solid, the system will not limit
wheel spin. Adjust your driving accordingly.
Check your DIC messaging to determine whether it is
because of the driver turning off the system, or that the
system may not be working properly and your vehicle
requires service. When this light is turned on, either the
SERVICE TRACTION or TRACTION OFF message
will be displayed.
SeeDIC Warnings and Messages on page 3-43for
more information on the messages associated with
this light.
To limit wheel spin, especially in slippery road
conditions, you should always leave the ETS on.
But you can turn the system off if you prefer.
To turn the system off, shift to LOW (L) or
REVERSE (R).
When you turn the system off, the ETS indicator/warning
light will come on and stay on and TRACTION OFF
message will be displayed when the gear shift is
in LOW (L). The indicator/warning light and message
will not come on when the gear shift is in REVERSE (R).
If the ETS is limiting wheel spin when you shift to
LOW (L) or REVERSE (R) to turn the system off, theindicator/warning light and TRACTION OFF will come
on in LOW (L). But the system won’t turn off right away.
It will wait until there’s no longer a current need to
limit wheel spin.
SeeDIC Warnings and Messages on page 3-43for
more information on the messages associated with
this light.
You can turn the system back on at any time by
shifting to AUTOMATIC OVERDRIVE (D) or
INTERMEDIATE (I). The ETS indicator/warning light
should go off.
Adding non-dealer/non-retailer accessories can affect
your vehicle’s performance. SeeAccessories and
Modifications on page 5-3for more information.
Electronic Stability Control (ESC)
Your vehicle may have an Electronic Stability Control
(ESC) system which combines antilock brake, and
traction and stability control systems that help the driver
maintain directional control of the vehicle in most
driving conditions.
When the vehicle is started and begins to move, the
system performs several diagnostic checks to ensure
there are no problems. You may hear or feel the system
working. This is normal and does not mean there is a
problem with your vehicle. The system should initialize
before the vehicle reaches 20 mph (32 km/h).
4-10

Highway Hypnosis
Always be alert and pay attention to your surroundings
while driving. If you become tired or sleepy, nd a
safe place to park your vehicle and rest.
Other driving tips include:
Keep the vehicle well ventilated.
Keep interior temperature cool.
Keep your eyes moving — scan the road ahead
and to the sides.
Check the rearview mirror and vehicle instruments
often.
Hill and Mountain Roads
Driving on steep hills or through mountains is different
than driving on at or rolling terrain. Tips for driving
in these conditions include:
Keep your vehicle serviced and in good shape.
Check all uid levels and brakes, tires, cooling
system, and transmission.
Going down steep or long hills, shift to a
lower gear.
{CAUTION:
If you do not shift down, the brakes could get
so hot that they would not work well. You
would then have poor braking or even none
going down a hill. You could crash. Shift down
to let the engine assist the brakes on a steep
downhill slope.
4-20

If Your Vehicle is Stuck in Sand,
Mud, Ice, or Snow
Slowly and cautiously spin the wheels to free your
vehicle when stuck in sand, mud, ice, or snow. See
Rocking Your Vehicle to Get It Out on page 4-26.
If your vehicle has a traction system, it can often help to
free a stuck vehicle. Refer to your vehicle’s traction
system in the Index. If the stuck condition is too severe
for the traction system to free the vehicle, turn the
traction system off and use the rocking method.
{CAUTION:
If you let your vehicle’s tires spin at high
speed, they can explode, and you or others
could be injured. The vehicle can overheat,
causing an engine compartment re or other
damage. Spin the wheels as little as possible
and avoid going above 35 mph (55 km/h) as
shown on the speedometer.
For information about using tire chains on your vehicle,
seeTire Chains on page 5-72.
Rocking Your Vehicle to Get It Out
First, turn the steering wheel left and right to clear
the area around the front wheels. Turn off any traction
system. SeeTraction Control System (TCS) on
page 4-6,Enhanced Traction System (ETS) on page 4-9,
andElectronic Stability Control (ESC) on page 4-10.
Then shift back and forth between REVERSE (R) and a
forward gear, or with a manual transmission, between
FIRST (1) or SECOND (2) and REVERSE (R), spinning
the wheels as little as possible. To prevent transmission
wear, wait until the wheels stop spinning before shifting
gears. Release the accelerator pedal while you shift, and
press lightly on the accelerator pedal when the
transmission is in gear. By slowly spinning the wheels in
the forward and reverse directions, you will cause a
rocking motion that could free your vehicle. If that does
not get your vehicle out after a few tries, it might need to
be towed out. If your vehicle does need to be towed out,
seeTowing Your Vehicle on page 4-32.
4-26

The Tire and Loading Information label also shows
the tire size of the original equipment tires (C) and
the recommended cold tire ination pressures (D).
For more information on tires and ination seeTires
on page 5-49andInflation - Tire Pressure on
page 5-56.
There is also important loading information on the
Certication label. It tells you the Gross Vehicle
Weight Rating (GVWR) and the Gross Axle Weight
Rating (GAWR) for the front and rear axle; see
“Certication Label” later in this section.
Steps for Determining Correct Load Limit
1.Locate the statement “The combined weight
of occupants and cargo should never exceed
XXX kg or XXX lbs” on your vehicle placard.
2.Determine the combined weight of the driver
and passengers that will be riding in your
vehicle.
3.Subtract the combined weight of the driver
and passengers from XXX kg or XXX lbs.
4.The resulting gure equals the available
amount of cargo and luggage load capacity.
For example, if the “XXX” amount equals
1400 lbs and there will be ve 150 lb
passengers in your vehicle, the amount of
available cargo and luggage load capacity is
650 lbs (1400−750 (5 x 150) = 650 lbs).
5.Determine the combined weight of luggage
and cargo being loaded on the vehicle. That
weight may not safely exceed the available
cargo and luggage load capacity calculated
in Step 4.
6.If your vehicle will be towing a trailer, the load
from your trailer will be transferred to your
vehicle. Consult this manual to determine how
this reduces the available cargo and luggage
load capacity of your vehicle.
If your vehicle can tow a trailer, seeTowing a
Trailer (Manual Transmission) on page 4-34
orTowing a Trailer (Automatic Transmission)
on page 4-34for important information on
towing a trailer, towing safety rules, and
trailering tips.
4-28