2008 CHEVROLET COBALT brakes

Different Size Tires and Wheels
If you add wheels or tires that are a different size than
your original equipment wheels and tires, this may
affect the way your vehicle performs, including its
braking, ride and handling characteristics, stability, and
resistance to rollover. Additionally, if your vehicle
has electronic systems such as, anti-lock brakes,
traction control, and electronic stability control, the
performance of these systems can be affected.
{CAUTION:
If you add different sized wheels, your
vehicle may not provide an acceptable level
of performance and safety if tires not
recommended for those wheels are selected.
You may increase the chance that you will
crash and suffer serious injury. Only use
GM specic wheel and tire systems developed
for your vehicle, and have them properly
installed by a GM certied technician.
SeeBuying New Tires on page 5-66andAccessories
and Modifications on page 5-3for additional information.
Uniform Tire Quality Grading
Quality grades can be found where applicable
on the tire sidewall between tread shoulder
and maximum section width. For example:
Treadwear 200 Traction AA Temperature A
The following information relates to the system
developed by the United States National
Highway Traffic Safety Administration (NHTSA),
which grades tires by treadwear, traction, and
temperature performance. This applies only
to vehicles sold in the United States. The grades
are molded on the sidewalls of most passenger
car tires. The Uniform Tire Quality Grading
(UTQG) system does not apply to deep tread,
winter-type snow tires, space-saver, or temporary
use spare tires, tires with nominal rim diameters
of 10 to 12 inches (25 to 30 cm), or to some
limited-production tires.
While the tires available on General Motors
passenger cars and light trucks may vary with
respect to these grades, they must also conform
to federal safety requirements and additional
General Motors Tire Performance Criteria (TPC)
standards.
5-68

Tire Chains
{CAUTION:
If your vehicle has P205/55R16 or P205/50R17
size tires, do not use tire chains. They can
damage your vehicle because there is not
enough clearance.
Tire chains used on a vehicle without the
proper amount of clearance can cause damage
to the brakes, suspension, or other vehicle
parts. The area damaged by the tire chains
could cause you to lose control of your vehicle
and you or others may be injured in a crash.
Use another type of traction device only
if its manufacturer recommends it for use on
your vehicle and tire size combination, and
road conditions. Follow that manufacturer’s
instructions. To help avoid damage to your
vehicle, drive slowly, readjust, or remove
the device if it is contacting your vehicle,
and do not spin your vehicle’s wheels.
If you do nd traction devices that will t,
install them on the front tires.Notice:If your vehicle has a tire size other than
P205/55R16 or P205/50R17 size tires, use tire chains
only where legal and only when you must. Use
only SAE Class S-type chains that are the proper
size for your tires. Install them on the front tires and
tighten them as tightly as possible with the ends
securely fastened. Drive slowly and follow the chain
manufacturer’s instructions. If you can hear the
chains contacting your vehicle, stop and retighten
them. If the contact continues, slow down until
it stops. Driving too fast or spinning the wheels with
chains on will damage your vehicle.
5-72

Removing the Flat Tire and Installing
the Spare Tire (Sport Model)
Sport Model Only
The Sport Model has larger performance brakes than
the Base Model. The compact spare tire will not
clear the front brakes.
Do not use the compact spare tire in the event of a
front at tire.
You must use the rear tire to replace the front at tire.To change the rear road tire:
Rear Tire Changing Procedure
1. Do a safety check before proceeding. SeeChanging
a Flat Tire on page 5-74for more information.
2. If your vehicle has plastic wheel covers, use the
wheel wrench to loosen the plastic wheel nut caps.
Once the plastic wheel nut caps have been
loosened with the wheel wrench, you can nish
loosening them with your ngers. The plastic
nut caps do not come off.
5-80

Service Publications Ordering
Information
Service Manuals
Service Manuals have the diagnosis and repair
information on engines, transmission, axle suspension,
brakes, electrical, steering, body, etc.
Service Bulletins
Service Bulletins’ give additional technical service
information needed to knowledgeably service General
Motors cars and trucks. Each bulletin contains
instructions to assist in the diagnosis and service of
your vehicle.
Owner Information
Owner publications are written specically for owners
and intended to provide basic operational information
about the vehicle. The owner manual includes the
Maintenance Schedule for all models.
In-Portfolio: Includes a Portfolio, Owner Manual, and
Warranty Booklet.
RETAIL SELL PRICE: $35.00 (U.S.) plus processing fee
Without Portfolio: Owner Manual only.
RETAIL SELL PRICE: $25.00 (U.S.) plus processing fee
Current and Past Model Order Forms
Technical Service Bulletins and Manuals are available
for current and past model GM vehicles. To request
an order form, specify year and model name of
the vehicle.
ORDER TOLL FREE: 1-800-551-4123
Monday-Friday 8:00 AM - 6:00 PM
Eastern Time
For Credit Card Orders Only
(VISA-MasterCard-Discover), visit Helm, Inc. on the
World Wide Web at: www.helminc.com
Or you can write to:
Helm, Incorporated
P.O. Box 07130
Detroit, MI 48207
Prices are subject to change without notice and without
incurring obligation. Allow ample time for delivery.
Note to Canadian Customers: All listed prices are
quoted in U.S. funds. Canadian residents are to make
checks payable in U.S. funds.
7-16

Audio System.................................................3-54
Audio Steering Wheel Controls......................3-76
Fixed Mast Antenna.....................................3-77
Radio Reception..........................................3-76
Setting the Clock.........................................3-55
Theft-Deterrent Feature................................3-75
XM™ Satellite Radio Antenna System............3-77
Audio System(s).............................................3-58
Automatic Door Lock.......................................2-11
Automatic Transmission
Fluid..........................................................5-19
Operation...................................................2-28
B
Battery..........................................................5-34
Electric Power Management..........................3-15
Run-Down Protection...................................3-16
Brake
Emergencies................................................ 4-6
Brakes..........................................................5-31
System Warning Light..................................3-31
Braking........................................................... 4-4
Braking in Emergencies..................................... 4-6Break-In, New Vehicle.....................................2-21
Bulb Replacement...........................................5-42
Back-Up Lamps...........................................5-46
Center High-Mounted Stoplamp (CHMSL)........5-44
Halogen Bulbs............................................5-42
Headlamp Aiming........................................5-39
Headlamps, Front Turn Signal, Sidemarker,
and Parking Lamps..................................5-42
License Plate Lamps....................................5-47
Replacement Bulbs......................................5-47
Taillamps and Turn Signal Lamps..................5-44
Taillamps, Turn Signal, Stoplamps and
Back-up Lamps........................................5-45
Buying New Tires...........................................5-66C
California Fuel.................................................. 5-6
California Perchlorate Materials Requirements....... 5-4
California Proposition 65 Warning....................... 5-4
Canadian Owners................................................ ii
Capacities and Specications..........................5-112
Carbon Monoxide...................2-13, 2-36, 4-21, 4-34
Care of
Safety Belts................................................5-98
2