2009 PONTIAC G8 engine

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.(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
fromAtoZ.
Vehicle Service and Care 9-45

If the TPMS is not functioning it
cannot detect or signal a low
tire condition. See the dealer/retailer
for service if the TPMS malfunction
light and DIC message comes
on and stays on.
TPMS Sensor Matching
Process
Each TPMS sensor has a unique
identication code. Any time one or
more of the TPMS sensors are
replaced or the vehicle’s tires are
rotated, the identication codes
need to be matched to the
new tire/wheel location. The sensors
are matched, to the tire/wheel
locations, in the following order:
driver side front tire, passenger side
front tire, passenger side rear
tire, and driver side rear tire using a
TPMS diagnostic tool. See your
dealer/retailer for service.The TPMS sensors can also be
matched to each tire/wheel position
by increasing or decreasing the
tire’s air pressure. When increasing
the tire’s pressure, do not exceed
the maximum ination pressure
indicated on the tire’s sidewall. To
decrease the tire’s air-pressure
use the pointed end of the valve
cap, a pencil-style air pressure
gage, or a key.
You have two minutes to match
each tire and wheel position.
If it takes longer than two minutes to
match any tire and wheel position,
the matching process stops and you
need to start over.
The TPMS matching process is
outlined below:
1. Set the parking brake.
2. Turn the ignition switch to
ON/RUN with the engine off.
3. Press and hold the Remote
Keyless Entry (RKE) transmitter’s
lock and unlock buttons, at the
same time, for about ve secondsto start the TPMS learn mode.
The horn chirps two times
indicating the TPMS receiver is
ready and in learn mode.
4. Start with the driver side front
tire. The driver side front
indicator lamp also comes on to
indicate that corner’s sensor
is ready to be learned.
5. Remove the valve cap from the
tire’s valve stem. Activate the
TPMS sensor by increasing
or decreasing the tire’s air
pressure for about eight seconds.
The horn chirps one time to
conrm the sensor identication
code has been matched to
the tire/wheel position.
9-56 Vehicle Service and Care

Tire Sealant and
Compressor Kit
If your vehicle has a factory installed
Tire Sealant and Compressor kit,
there is no spare tire, no tire
changing equipment and no place
to store a tire.
If a tire goes at, avoid further tire
and wheel damage by driving slowly
to a level place and stopping.
1. Turn on the hazard warning
ashers. SeeHazard Warning
Flashers on page 4-4.
2. Park your vehicle. Set the
parking brake rmly and put the
shift lever in P (Park). See
Shifting Into Park (Automatic
Transmission) on page 8-12.3. Turn off the engine.
4. Inspect the at tire.
If the tire has been separated from
the wheel, has damaged sidewalls,
or has a puncture larger than a
14inch (6 mm), the tire is too
severely damaged for the tire
sealant and compressor kit to be
effective. SeeRoadside Assistance
Program on page 12-6.
If the tire has a puncture less than
a
14inch (6 mm) in the tread area
of the tire, seeTire Sealant and
Compressor Kit (V8 Engine) on
page 9-67.
Tire Sealant and
Compressor Kit
(V8 Engine)
This vehicle has a tire sealant and
compressor kit in place of a jack or
spare tire. It is located in a foam
container in the trunk. The tire
sealant and compressor kit can be
used to repair a at tire by sealing
small punctures in the tread of the
tire. It can also be used to inate an
underinated tire. The vehicle must
be driven for ve miles (8 kilometers)
after the tire is sealed and inated
to the recommended pressure to
ensure the sealant is distributed
evenly. For detailed instructions
see “Using the Tire Sealant and
Compressor Kit to Temporarily
Repair a Punctured Tire” later in
this section.
Vehicle Service and Care 9-67

Do a safety check before
proceeding. SeeIf a Tire
Goes Flat on page 9-66.
Inspect the damaged tire.
The sealant cannot seal sidewall
damage, large punctures, or a
tire that has unseated from
the wheel. SeeRoadside Assistance
Program on page 12-6.
Do not remove any objects that
have penetrated the tire.
1. Place the tire sealant and
compressor kit on the ground and
unwrap the sealant/air hose (E)
from the side of the compressor.
2. Remove the air compressor
accessory plug (B) from the unit.
Do not plug the plug in yet.3. Turn the tire valve stem cap
counterclockwise to remove.
4. Attach the sealant/air hose (E)
onto the tire valve stem.
Turn it clockwise until tight.
5. Make sure the sealant and
compressor kit on/off switch (A)
is in the O (off) position.
Plug the air compressor
accessory plug (B) into an
accessory power outlet in the
vehicle. SeeAccessory Power
Outlet(s) on page 4-9for
more information.
Do not slam door or close
window on the compressor
accessory plug cord.
{CAUTION
Idling the engine in a closed-in
place or with the climate control
system off can cause deadly
carbon monoxide (CO). See
Engine Exhaust on page 8-14.6. Start the vehicle. The vehicle
must be running while using
the air compressor.
{CAUTION
Overination could cause the tire
to rupture, and you or others
could be injured. Be sure to read
the inator instructions, and inate
the tire to its recommended
pressure. Do not exceed 36 psi
(248 kPa).
7. Push the On/Off switch (A) to the
I (on) position.
The kit will begin to inject sealant
into the tire. Sealant could leak
from the puncture hole until
the vehicle is driven and the hole
has sealed.
Vehicle Service and Care 9-69

{CAUTION
Idling the engine in a closed-in
place or with the climate control
system off can cause deadly
carbon monoxide (CO). See
Engine Exhaust on page 8-14.
5. Start the vehicle. The vehicle
must be running while using
the air compressor.
{CAUTION
Overination could cause the tire
to rupture, and you or others could
be injured. Be sure to read the
inator instructions, and inate the
tire to its recommended pressure.
Do not exceed 36 psi (248 kPa).
6. Push the On/Off switch (G) to
the I (on) position.
Check the pressure gage (F).
If there is not a pressure reading
while the compressor isrunning, check for leaks at the
connection between the
hose and the tire valve stem.
7. Inate the tire up to the
recommended ination pressure
using the air pressure gage (F)
on the top of the unit. See
Inflation - Tire Pressure on
page 9-49.
The pressure gage (F) reads
slightly high while the compressor
is on. Turn the compressor off to
get an accurate reading. The
compressor may be turned on
and off until the correct pressure
is reached.
8. Push the On/Off switch (G) to
the O (off) position.
Be careful while handling the tire
sealant and compressor kit as
they could be hot after usage.
9. Unplug the air compressor
accessory plug (A) from the
accessory power outlet in
the vehicle and stow it in its
original location.10. Disconnect the air-only hose (E)
from the tire valve stem and
stow it back in its original
location.
11. Replace the tire valve
stem cap.
{CAUTION
Storing the tire sealant and
compressor kit or other equipment
in the passenger compartment of
the vehicle could cause injury. In
a sudden stop or collision, loose
equipment could strike someone.
Store the tire sealant and
compressor kit in its original
location.
12. Place the equipment in the
original location in the trunk
of your vehicle.
Vehicle Service and Care 9-73

Changing a Flat Tire
If a tire goes at, avoid further tire
and wheel damage by driving slowly
to a level place. Turn on the
hazard warning ashers.
{CAUTION
Changing a tire can be dangerous.
The vehicle can slip off the jack
and roll over or fall on you or other
people. You and they could be
badly injured or even killed. Find a
level place to change your tire.
To help prevent the vehicle from
moving:
1. Set the parking brake rmly.
2. Put an automatic
transmission shift lever in
P (Park), or shift a manual
transmission to 1 (First) or
R (Reverse).
(Continued)
CAUTION (Continued)
3. Turn off the engine and do
not restart while the vehicle
is raised.
4. Do not allow passengers to
remain in the vehicle.
To be certain the vehicle will not
move, put blocks at the front and
rear of the tire farthest away from
the one being changed. That
would be the tire on the other
side, at the opposite end of the
vehicle.When you have a at tire, place the
wheel block at the tire diagonally
across from the at tire.
Vehicle Service and Care 9-75

The jump start positive (A) and
negative posts (B) are located in the
engine compartment on the driver
side of the vehicle.These posts are used instead of a
direct connection to the battery.The positive jump start connection
is covered by a red cap. Remove to
expose the terminal.
1. Check the other vehicle. It must
have a 12-volt battery with a
negative ground system.
Notice: If the other vehicle’s
system is not a 12-volt system
with a negative ground, both
vehicles can be damaged. Only
use vehicles with 12-volt systems
with negative grounds to jump
start your vehicle.
2. Position the two vehicles so that they are not touching.
3. Set the parking brake rmly and put the shift lever in P (Park).
See Shifting Into Park (Automatic
Transmission) on page 8-12 .
Vehicle Service and Care 9-85

Notice:If you leave the radio or
other accessories on during
the jump starting procedure, they
could be damaged. The repairs
would not be covered by the
warranty. Always turn off
the radio and other accessories
when jump starting the vehicle.
4. Turn the ignition to LOCK/OFF
and switch off all lights and
accessories in both vehicles,
except the hazard warning
ashers if needed.
{CAUTION
An electric fan can start up even
when the engine is not running
and can injure you. Keep hands,
clothing and tools away from any
underhood electric fan.
{CAUTION
Using a match near a battery can
cause battery gas to explode.
People have been hurt doing this,
and some have been blinded. Use
a ashlight if you need more light.
Be sure the battery has enough
water. You do not need to add
water to the battery installed in
your new vehicle. But if a battery
has ller caps, be sure the right
amount of uid is there. If it is
low, add water to take care of that
rst. If you don’t, explosive gas
could be present.
Battery uid contains acid that
can burn you. Do not get it on
you. If you accidentally get it in
your eyes or on your skin, ush
the place with water and get
medical help immediately.
{CAUTION
Fans or other moving engine
parts can injure you badly. Keep
your hands away from moving
parts once the engine is running.
5. Connect one end of the red
positive (+) cable to the jump
start positive (+) post (A).
9-86 Vehicle Service and Care