2009 PONTIAC G6 tire type

Finding a Program Type (PTY) Station
(RDS and XM™)
To select and nd a desired PTY perform the following:
1. Press the P-TYPE button to activate program
type select mode. PTY for FM or PTYPE for XM and
a program type displays.
2. Turn the ADJ knob to select a PTY.
3. Once the desired PTY is displayed, press the up
SEEK arrow to select the PTY and to take you to
the PTY’s rst station.
4. To go to another station within that PTY press the
up SEEK arrow again. If the radio cannot nd the
desired PTY, NONE FOUND displays and the radio
returns to the last station you were listening to.
After 15 seconds of inactivity or if the P-TYPE
button is pressed again, the radio exits program
type select mode.
BAND (AF – Alternate Frequency):Alternate
frequency lets the radio switch to a stronger station with
the same program type. To turn alternate frequency
on, press and hold BAND for two seconds. FM ALT
FREQ ON and AF displays. The radio can switch
to stations with a stronger frequency.To turn alternate frequency off, press and hold BAND
again for two seconds. FM ALT FREQ OFF displays and
AF disappears from the display. The radio does not
switch to other stations.
This function does not apply for XM Satellite Radio
Service.
RDS Messages
ALERT!:Alert warns of local or national emergencies.
When an alert announcement comes on the current
radio station, ALERT! displays. The announcement is
heard even if the volume is low or a CD is playing. If a
CD is playing, play stops during the announcement.
Alert announcements cannot be turned off.
ALERT! is not affected by tests of the emergency
broadcast system. This feature is not supported by all
RDS stations.
MSG (Message):If the current station has a message,
MSG displays. Press this button to see the message.
The message can display the artist, song title, call
in phone numbers, etc.
If the entire message is not displayed, parts of the
message appears every three seconds. To scroll
through the message, press and release the MSG
button. A new group of words display after every press
of this button. Once the complete message has
3-58

Skidding
In a skid, a driver can lose control of the vehicle.
Defensive drivers avoid most skids by taking reasonable
care suited to existing conditions, and by not overdriving
those conditions. But skids are always possible.
The three types of skids correspond to the vehicle’s
three control systems. In the braking skid, the wheels are
not rolling. In the steering or cornering skid, too much
speed or steering in a curve causes tires to slip and lose
cornering force. And in the acceleration skid, too much
throttle causes the driving wheels to spin.
If the vehicle does not have a traction system, or if the
traction system is off, an acceleration skid is best handled
by easing your foot off the accelerator pedal. See
Traction Control System (TCS) on page 4-7and
StabiliTrak
®System on page 4-6.
If the vehicle starts to slide, ease your foot off the
accelerator pedal and quickly steer the way you want
the vehicle to go. If you start steering quickly enough,
the vehicle may straighten out. Always be ready for
a second skid if it occurs.Of course, traction is reduced when water, snow, ice,
gravel, or other material is on the road. For safety, slow
down and adjust your driving to these conditions. It is
important to slow down on slippery surfaces because
stopping distance will be longer and vehicle control more
limited.
While driving on a surface with reduced traction, try
your best to avoid sudden steering, acceleration, or
braking, including reducing vehicle speed by shifting to a
lower gear. Any sudden changes could cause the tires to
slide. You may not realize the surface is slippery until
the vehicle is skidding. Learn to recognize warning
clues — such as enough water, ice, or packed snow on
the road to make a mirrored surface — and slow down
when you have any doubt.
If the vehicle has the Antilock Brake System (ABS),
remember: It helps avoid only the braking skid. If the
vehicle does not have ABS, then in a braking skid, where
the wheels are no longer rolling, release enough pressure
on the brakes to get the wheels rolling again. This
restores steering control. Push the brake pedal down
steadily when you have to stop suddenly. As long as the
wheels are rolling, you will have steering control.
4-12

Driving in Rain and on Wet Roads
Rain and wet roads can reduce vehicle traction
and affect your ability to stop and accelerate. Always
drive slower in these types of driving conditions
and avoid driving through large puddles and
deep-standing or owing water.
{CAUTION:
Wet brakes can cause crashes. They might not
work as well in a quick stop and could cause pulling
to one side. You could lose control of the vehicle.
After driving through a large puddle of water or a
car/vehicle wash, lightly apply the brake pedal until
the brakes work normally.
Flowing or rushing water creates strong forces.
Driving through owing water could cause your
vehicle to be carried away. If this happens, you and
other vehicle occupants could drown. Do not ignore
police warnings and be very cautious about trying to
drive through owing water.
Hydroplaning
Hydroplaning is dangerous. Water can build up under
your vehicle’s tires so they actually ride on the water. This
can happen if the road is wet enough and you are going
fast enough. When your vehicle is hydroplaning, it has
little or no contact with the road.
There is no hard and fast rule about hydroplaning. The
best advice is to slow down when the road is wet.
Other Rainy Weather Tips
Besides slowing down, other wet weather driving tips
include:
Allow extra following distance.
Pass with caution.
Keep windshield wiping equipment in good shape.
Keep the windshield washer uid reservoir lled.
Have good tires with proper tread depth. SeeTires
on page 5-59.
Turn off cruise control.
4-14

Total Weight on the Vehicle’s Tires
Be sure the vehicle’s tires are inated to the upper limit
for cold tires. These numbers can be found on the
Certication/Tire label. SeeLoading the Vehicle on
page 4-20. Make sure not to go over the GVW limit for
the vehicle, including the weight of the trailer tongue.
Hitches
It is important to have the correct hitch equipment.
Crosswinds, large trucks going by and rough roads are
a few reasons why the right hitch is needed. Here
are some rules to follow:
The rear bumper on the vehicle is not intended
for hitches. Do not attach rental hitches or other
bumper-type hitches to it. Use only a frame-mounted
hitch that does not attach to the bumper.
Will any holes be made in the body of the vehicle
when the trailer hitch is installed? If there are, then
be sure to seal the holes later when the hitch is
removed. If the holes are not sealed, dirt, water, and
deadly carbon monoxide (CO) from the exhaust can
get into the vehicle. SeeEngine Exhaust on
page 2-35in the Index for more information.
Safety Chains
Always attach chains between the vehicle and the trailer.
Cross the safety chains under the tongue of the trailer to
help prevent the tongue from contacting the road if it
becomes separated from the hitch. Instructions about
safety chains may be provided by the hitch manufacturer
or by the trailer manufacturer. Follow the manufacturer’s
recommendation for attaching safety chains and do not
attach them to the bumper. Always leave just enough
slack so the rig can turn. Never allow safety chains to
drag on the ground.
Trailer Brakes
Because the vehicle has antilock brakes, do not try to
tap into the vehicle’s hydraulic brake system. If you
do, both brake systems will not work well, or at all.
Does your trailer have its own brakes? Be sure to read
and follow the instructions for the trailer brakes so you will
be able to install, adjust and maintain them properly.
Driving with a Trailer
Towing a trailer requires a certain amount of experience.
Get to know the rig before setting out for the open road.
Get acquainted with the feel of handling and braking with
the added weight of the trailer. And always keep in mind
that the vehicle you are driving is now longer and not as
responsive as the vehicle is by itself.
4-33

Low-Prole Performance Tire
If your vehicle has P225/50R18 or P225/50R17
size tires, they are classied as low-prole
performance tires. These tires are designed for very
responsive driving on wet or dry pavement. You
may also notice more road noise with low-prole
performance tires and that they tend to wear faster.
Notice:If the vehicle has low-prole tires, they
are more susceptible to damage from road
hazards or curb impact than standard prole
tires. Tire and/or wheel assembly damage can
occur when coming into contact with road
hazards like, potholes, or sharp edged objects,
or when sliding into a curb. The vehicle
warranty does not cover this type of damage.
Keep tires set to the correct ination pressure
and, when possible avoid contact with curbs,
potholes, and other road hazards.
Winter Tires
If your vehicle has P225/50R18 size tires, they are
classied as low-prole performance tires. These tires
are designed for very responsive driving on wet or dry
pavement. If you expect to drive on snow or ice coveredroads often, you may want to get winter tires for your
vehicle. The low-prole performance tires may not
offer the traction you would like or the same level
of performance as winter tires on snow or ice
covered roads.
Winter tires, in general, are designed for increased
traction on snow and ice covered roads. With winter tires,
there may be decreased dry road traction, increased road
noise and shorter tire tread life. After switching to winter
tires, be alert for changes in vehicle handling and braking.
See your retailer for details regarding winter tire
availability and proper tire selection. Also, seeBuying
New Tires on page 5-78
If you choose to use winter tires:
Use tires of the same brand and tread type on all
four wheel positions.
Use only radial ply tires of the same size, load range,
and speed rating as your original equipment tires.
Winter tires with the same speed rating as your original
equipment tires may not be available for H, V, W and ZR
speed rated tires. If you choose winter tires with a lower
speed rating, never exceed the tire’s maximum speed
capability.
5-60

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.
(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.
(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. Passenger (P-Metric) Tire Example
5-61

(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 see
Uniform Tire Quality Grading on page 5-80.
(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, seeCompact
Spare Tire on page 5-101andIf a Tire Goes Flat on
page 5-85.
(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 5-67. Compact Spare Tire Example
5-62

(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.(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.
5-63