CHEVROLET COBALT 2008 1.G Owners Manual

To replace one of these bulbs:
1. Open the hood. SeeHood Release on page 5-11
for more information.
2. Remove the two hex bolts from the headlamp
assembly.
3. Remove the two plastic fasteners from the fascia.
4. Pull the front fascia back.
You might need someone else to assist you with
Steps 3 and 4.5. Pull the headlamp assembly up on an angle and
towards the radiator to remove it.
6. Disconnect the bulb base from the wiring harness
by lifting the plastic locking tab.
7. To replace a headlamp bulb, do the following:
7.1. Disconnect the wiring harness from the
bulb socket.
7.2. Remove the black retainer by turning it
counterclockwise.
8. Turn the bulb socket for the headlamp, front turn
signal, or parking lamp counterclockwise. For the
sidemarker bulb, use a tool to assist in turning
the bulb socket.
9. Pull the old bulb out of the socket.
10. Install a new bulb.
11. Reinstall the bulb assembly by reversing Steps 1
through 8.
When reinstalling the headlamp assembly, rst
make sure that the wiring harness is in its original
position. If not, the headlamp assembly will not
t correctly.
Align the two tabs on the bottom of the assembly
that t into two slots in the headlamp assembly
bracket.
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Center High-Mounted Stoplamp
(CHMSL)
To replace a CHMSL bulb:
1. Open the trunk. SeeTrunk on page 2-13for
more information.
2. Locate the CHMSL bulb assembly in the trunk lid.
3. Press the plastic tabs to release the bulb assembly.
4. Pull the bulb assembly down to access the bulbs.5. Remove the bulb by pulling it straight out.
6. Install a new bulb.
7. Align the tabs in the bulb assembly with the
assembly in the trunk lid. Push the bulb assembly
back into place until it snaps in. You may need
to use a tool to guide the tabs into the assembly.
Taillamps and Turn Signal
Lamps (Coupe)
To replace this bulb:
1. Open the trunk. SeeTrunk on page 2-13for
more information.
2. Remove the fastener which holds down the
trunk trim.
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3. Disconnect the wiring harness by lifting up on the
tab to release and pull it straight out.
4. Remove the taillamp bulb socket from the assembly
by turning it counterclockwise.
5. Pull the old bulb out of the socket.
6. Install a new bulb.
7. Reverse Steps 1 through 4 to reinstall the taillamp
assembly.
Taillamps, Turn Signal, Stoplamps
and Back-up Lamps (Sedan)
To replace one of these bulbs:
1. Open the trunk. SeeTrunk on page 2-13for
more information.
2. Remove the fastener which holds down the trunk
trim. Once you have removed the trim, there will
be one more fastener to remove.
3. Remove the outer two screws from the taillamp
assembly.
4. Disconnect the wiring harness by lifting up on
the tab to release and pull it straight out.
5. Remove the taillamp from the quarter panel.A. Sidemarker
B. Stoplamp/Turn Signal/Taillamp
C. Back-up
6. Locate the bulb to change.
7. Remove the taillamp bulb socket from the assembly
by turning it counterclockwise.
8. Pull the old bulb out of the socket.
9. Install a new bulb.
10. Reverse Steps 1 through 6 to reinstall the taillamp
assembly.
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Back-Up Lamps (Coupe)
To replace a back-up lamp bulb:
1. Open the trunk. SeeTrunk on page 2-13for
more information.
2. Locate the back-up lamp bulb assembly in
the trunk lid.3. Remove the bulb socket by turning it
counterclockwise.
On vehicles that have a back-up lamp cover,
rst remove it by depressing the tab at the top.
4. Pull out the old bulb.
5. Install a new bulb.
6. Reinstall the bulb socket by aligning the tabs and
turning it clockwise to secure.
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License Plate Lamp
To replace one of these bulbs:
1. Remove the two screws holding each of the license
plate lamps.
2. Turn and pull the license plate lamp toward you
through the opening.
3. Turn the bulb socket counterclockwise and pull the
bulb straight out of the socket.
4. Install the new bulb.
5. Reverse Steps 1 through 3 to reinstall the license
plate lamp.
Replacement Bulbs
Exterior Lamps Bulb Number
Back-Up Lamps 921
Center High-Mounted
Stoplamp (CHMSL)912
Front Parking/Turn
Signal Lamps3157KX
Halogen Headlamps,
High/Low-Beam9007 LL
License Plate Lamp and
Sidemarker194
Stoplamp, Taillamp and
Turn Signal Lamps3057KX
For replacement bulbs not listed here, contact your
dealer/retailer.
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Windshield Wiper Blade
Replacement
Windshield wiper blades should be inspected for
wear or cracking. SeeScheduled Maintenance
on page 6-4for more information on wiper
blade inspection.
Replacement blades come in different types and are
removed in different ways. For proper type and length,
seeMaintenance Replacement Parts on page 6-14.Here is how to remove the wiper blades:
1. Pull the windshield wiper arm away from the
windshield.
2. Push the release lever and slide the wiper assembly
toward the driver side of the vehicle.
3. Install a new blade by reversing Steps 1 and 2.
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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 vehicle
Warranty booklet for details.
{CAUTION:
Poorly maintained and improperly used
tires are dangerous.
Overloading your vehicle’s tires can
cause overheating as a result of too
much exing. You could have an
air-out and a serious accident. See
Loading Your Vehicle on page 4-27.
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 vehicle’s tires are cold. See
Inflation - Tire Pressure on page 5-56.
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 the tire’s tread is badly worn,
or if your vehicle’s tires have been
damaged, replace them.
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Tire Sidewall Labeling
Useful information about a tire is molded into its
sidewall. The examples below show a typical
passenger vehicle tire and a compact spare tire
sidewall.(A) Tire Size:The tire size is a combination of
letters and numbers used to dene a particular
tire’s width, height, aspect ratio, construction type
and service description. See the “Tire Size”
illustration later in this section for more detail.
(B) TPC Spec (Tire Performance Criteria
Specication)
:Original equipment tires designed
to GM’s specic tire performance criteria have
a TPC specication code molded onto the sidewall.
GM’s TPC specications meet or exceed all
federal safety guidelines. If your vehicle has
205/55R16 size tires, they meet the GM TPC Spec
rating, but the TPC Spec code has not been
molded onto the tire’s sidewall.
(C) DOT (Department of Transportation)
:The Department of Transportation (DOT) code
indicates that the tire is in compliance with the
U.S. Department of Transportation Motor Vehicle
Safety Standards.
Passenger (P-Metric) Tire Example
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(D) Tire Identication Number (TIN):The letters
and numbers following DOT (Department of
Transportation) code is the Tire Identication
Number (TIN). The TIN shows the manufacturer
and plant code, tire size, and date the tire
was manufactured. The TIN is molded onto both
sides of the tire, although only one side may
have the date of manufacture.
(E) Tire Ply Material
:The type of cord and
number of plies in the sidewall and under
the tread.
(F) Uniform Tire Quality Grading (UTQG)
:Tire manufacturers are required to grade tires
based on three performance factors: treadwear,
traction and temperature resistance. For more
information seeUniform Tire Quality Grading
on page 5-68.
(G) Maximum Cold Ination Load Limit
:Maximum load that can be carried and the
maximum pressure needed to support that load.(A) Temporary Use Only:The compact spare
tire or temporary use tire has a tread life of
approximately 3,000 miles (5 000 km) and should
not be driven at speeds over 65 mph (105 km/h).
The compact spare tire is for emergency use
when a regular road tire has lost air and gone at.
If your vehicle has a compact spare tire, see
Compact Spare Tire on page 5-94andIf a Tire
Goes Flat on page 5-73. Compact Spare Tire Example
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(B) Tire Ply Material:The type of cord and
number of plies in the sidewall and under the tread.
(C) Tire Identication Number (TIN)
:The letters
and numbers following the DOT (Department
of Transportation) code is the Tire Identication
Number (TIN). The TIN shows the manufacturer
and plant code, tire size, and date the tire
was manufactured. The TIN is molded onto
both sides of the tire, although only one side
may have the date of manufacture.
(D) Maximum Cold Ination Load Limit
:Maximum load that can be carried and the
maximum pressure needed to support that load.
(E) Tire Ination
:The temporary use tire or
compact spare tire should be inated to 60 psi
(420 kPa). For more information on tire pressure
and ination seeInflation - Tire Pressure
on page 5-56.
(F) Tire Size
:A combination of letters and
numbers dene a tire’s width, height, aspect
ratio, construction type and service description.
The letter T as the rst character in the tire
size means the tire is for temporary use only.(G) TPC Spec (Tire Performance Criteria
Specication)
:Original equipment tires designed
to GM’s specic tire performance criteria have
a TPC specication code molded onto the sidewall.
GM’s TPC specications meet or exceed all
federal safety guidelines.
Tire Size
The following illustration shows an example of a typical
passenger vehicle tire size.
(A) Passenger (P-Metric) Tire:The United States
version of a metric tire sizing system. The letter P
as the rst character in the tire size means a
passenger vehicle tire engineered to standards set
by the U.S. Tire and Rim Association. A tire size
without the letter P as the rst character is certied
to European standards.
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