2009 PONTIAC G8 automatic transmission

While using the DSC mode, the
vehicle has rmer shifting and
increased performance. This can be
used for sport driving or when
climbing or descending hills, to stay
in gear longer, or to down shift
for more power or engine braking.
The transmission will only allow the
driver to shift into gears appropriate
for the vehicle speed and engine
Revolutions Per Minute (RPM). The
transmission will not automatically
shift to the next lower gear if the
engine RPM is too high.
If shifting is prevented for any
reason, the currently selected gear
will ash multiple times, indicating
that the transmission has not
shifted gears.While in the DSC mode, the
transmission automatically
downshifts when the vehicle comes
to a stop.
When accelerating the vehicle from
a stop in snowy and icy conditions,
1st, 2nd or 3rd gear starts can
be selected from a standing start.
This is useful for gentle acceleration
on slippery surfaces.
To return to Normal Shift mode,
slide the shift lever over from
the right quadrant to the left into
D (Drive). A Normal Shift message
will be displayed in the DIC.
Normal Shift Mode is recommended
for normal or freeway driving, as
it provides optimum fuel economy.Powertrain Braking
For vehicles with a 6 speed
automatic transmission, there is
an additional feature known as
Powertrain Braking. When driving
on steep descents where frequent
braking is required, the vehicle
will automatically downshift to
provide engine braking assistance.
This feature also reduces brake
temperatures and wear.
Downshifting will only occur when
the driver’s foot is applied to
the brake. Active Select Mode can
be switched on to override the
feature and gain complete control of
shifts if desired.
Driving and Operating 8-9

To release the parking brake:
1. Hold the brake pedal down.
2. Pull the parking brake handle up
until you can press the release
button.
3. Hold the release button in as you
move the brake handle all the
way down.
Notice:Driving with the parking
brake on can overheat the brake
system and cause premature wear
or damage to brake system parts.
Make sure that the parking brake
is fully released and the brake
warning light is off before driving.
Driving with the park brake applied
will cause a warning chime to
sound and the Park Brake message
to appear in the DIC. The message
will remain on until:
the park brake is released
the vehicle comes to a stop.
If you are towing a trailer and you
are parking on a hill, seeTowing a
Trailer on page 9-89.
Shifting Into Park
(Automatic
Transmission)
{CAUTION
It can be dangerous to get out of
the vehicle if the shift lever is not
fully in P (Park) with the parking
brake rmly set. The vehicle can
roll. If you have left the engine
running, the vehicle can move
suddenly. You or others could be
injured. To be sure the vehicle will
not move, even when you are on
fairly level ground, use the steps
that follow. If you are pulling a
trailer, seeTowing a Trailer on
page 9-89.Use this procedure to shift into
P (Park):
1. Hold the brake pedal down and
set the parking brake.
SeeParking Brake on page 8-11
for more information.
2. Move the shift lever into P (Park)
by holding in the button on the
shift lever and pushing the
lever all the way toward the front
of the vehicle.
3. Turn the ignition key to
LOCK/OFF.
4. Remove the key and take it with
you. If you can leave the vehicle
with the ignition key in your
hand, the vehicle is in P (Park).
8-12 Driving and Operating

Leaving Your Vehicle With the
Engine Running
{CAUTION
It can be dangerous to leave the
vehicle with the engine running.
The vehicle could move suddenly
if the shift lever is not fully in
P (Park) with the parking brake
rmly set. And, if you leave the
vehicle with the engine running, it
could overheat and even catch re.
You or others could be injured.
Do not leave the vehicle with the
engine running.
If you have to leave the vehicle with
the engine running, be sure the
vehicle is in P (Park) and the parking
brake is rmly set before you leave it.
After you have moved the shift lever
into P (Park), hold the brake pedal
down. Then, see if you can move the
shift lever away from P (Park) without
rst pushing the button.If you can, it means that the
shift lever was not fully locked
into P (Park).
Torque Lock
If you are parking on a hill and
you do not shift the automatic
transmission into P (Park) properly,
the weight of the vehicle may put too
much force on the parking pawl in
the transmission. You may nd it
difficult to pull the shift lever out of
P (Park). This is called torque lock.
To prevent torque lock, set the
parking brake and then shift into
P (Park) properly before you leave
the driver seat. To nd out how, see
“Shifting Into Park” previously in the
section.
When you are ready to drive, move
the shift lever out of P (Park) before
you release the parking brake.
If torque lock does occur, you may
need to have another vehicle
push yours a little uphill to takesome of the pressure from the
parking pawl in the transmission,
so you can pull the shift lever out
of P (Park).Shifting Out of Park
To shift out of P (Park):
1. Apply the brake pedal.
2. Press the shift lever button.
3. Move the shift lever to the
desired position.
If you still are unable to shift out of
P (Park):
1. Fully release the shift lever
button.
2. Hold the brake pedal down and
press the shift lever button again.
3. Move the shift lever to the
desired position.
If you still cannot move the shift
lever from P (Park), seeShift Lock
Manual Release on page 9-88.
Driving and Operating 8-13

CAUTION (Continued)
The exhaust system leaks
due to corrosion or damage.
The vehicle’s exhaust system
has been modied, damaged
or improperly repaired.
There are holes or openings
in the vehicle body from
damage or after-market
modications that are not
completely sealed.
If unusual fumes are detected or if
it is suspected that exhaust is
coming into the vehicle:
Drive it only with the windows
completely down.
Have the vehicle repaired
immediately.
Never park the vehicle with the
engine running in an enclosed
area such as a garage or a
building that has no fresh air
ventilation.
Running the Vehicle
While Parked
It is better not to park with the
engine running. But if you ever have
to, here are some things to know.
{CAUTION
Idling a vehicle in an enclosed
area with poor ventilation is
dangerous. Engine exhaust may
enter the vehicle. Engine exhaust
contains Carbon Monoxide (CO)
which cannot be seen or smelled.
It can cause unconsciousness
and even death. Never run the
engine in an enclosed area that
has no fresh air ventilation. For
more information, see Engine
ExhaustEngine Exhaust on
page 8-14.
{CAUTION
It can be dangerous to get out
of the vehicle if the automatic
transmission shift lever is not fully
in P (Park) with the parking brake
rmly set. The vehicle can roll.
Do not leave the vehicle when the
engine is running unless you have
to. If you have left the engine
running, the vehicle can move
suddenly. You or others could be
injured. To be sure the vehicle will
not move, even when you are on
fairly level ground, always set the
parking brake and move the shift
lever to P (Park).
Follow the proper steps to be sure
the vehicle will not move. See
Shifting Into Park (Automatic
Transmission) on page 8-12.
If parking on a hill and pulling a
trailer, seeTowing a Trailer
on page 9-89.
Driving and Operating 8-15

The system may be heard or felt
while it is working. This is normal
and does not mean there is a
problem with the vehicle.
When this light and the STABILITY
CTRL OFF message is on and
the ESP OFF message is
displayed, the system will not
limit wheel spin.
Adjust your driving accordingly.
SeeDIC Warnings and Messages
on page 4-26for more information.ESP is automatically enabled
whenever the vehicle is started.
To limit wheel spin, especially
in slippery road conditions, always
leave the system enabled. ESP
can be turned off if needed.
It is recommended to leave the
system on for normal driving
conditions, but it may be necessary
to turn the system off if the
vehicle is stuck in sand, mud, ice or
snow, and you want to rock the
vehicle to attempt to free it. It may
also be necessary to turn off
the system when driving in extreme
off-road conditions where high
wheel spin is required. SeeIf Your
Vehicle is Stuck in Sand, Mud,
Ice, or Snow on page 8-29.The ESP button is located in front of
the transmission gear selector lever.
To turn the system off or on, press
and release the ESP button.
The DIC will briey display the
appropriate message and then
return to the trip computer display.
8-20 Driving and Operating

When this light and the STABILITY
CTRL OFF message is on briey and
the ESP OFF message is displayed
at the bottom of the DIC, the system
will not limit wheel spin.
If the ESP OFF message is always
displayed at the bottom of the
DIC when the button is pressed
to turn the system on or off, the
system needs repair. Contact your
dealer/retailer.The system is on when this light
and the STABILITY CTRL ON
message is displayed briey on
the DIC.
ESP Operation
ESP limits wheel spin by reducing
engine power to the wheels and
by applying brakes to each
individual wheel as necessary.
The ESP system is enabled
automatically when the vehicle
is started, and it will activate
the STABILITY CONTROL
ASSISTANCE light and the ESP
CTRL message on the DIC if it
senses that any of the wheels are
spinning or beginning to lose traction
while driving.Notice:If the wheel(s) of one axle
are allowed to spin excessively
while the ESC/TCS, ABS and
Brake warning lights and the
SERVICE ESC and/or SERVICE
TRACTION messages are
displayed, the differential could be
damaged. The repairs would not
be covered by the vehicle
warranty. Reduce engine power
and do not spin the wheel(s)
excessively while these lights and
this message are displayed.
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,
a noise, vibration, or a reduction
in acceleration may be noticed.
This is normal.
Adding non-dealer/non-retailer
accessories can affect the vehicle’s
performance. SeeAccessories
and Modifications on page 9-3for
more information.
Driving and Operating 8-21

Fuses Usage
F14 Auxiliary Power
F15Outside Rearview
Mirrors
F16Sunroof/Automatic
Transmission
Shift Lock
F17 Sunroof
F18Automatic Occupant
Sensor
F19Driver Side Heated
Seat
F20Passenger Side
Heated Seat
F21Daytime Running
Lamps
F22Front Cigarette
Lighter
F23Steering Wheel
Controls Backlighting
F24 Power Window
FUSE
PULLERFuse PullerCircuit
BreakersUsage
B1 Spare
B2 Power Windows
B3 Power Seats
B4 Spare
Relays Usage
R1Retain Accessory
Power 1
R2 Door Locks
R3Passenger Side
Door Lock
R4 Spare
R5 Trunk Release
R6 Driver Side Lock
R7Retain Accessory
Power 2
R8 Accessory
R9 Blower
R10 Spare
R11Daytime Running
Lamps
R12 Fuel Pump
Engine Compartment
Fuse Block
To open the fuse block cover,
remove the clip on cover.
Notice:Spilling liquid on any
electrical components on
the vehicle may damage it.
Always keep the covers on any
electrical component.
9-38 Vehicle Service and Care

Tire Terminology and
Denitions
Air Pressure:The amount of
air inside the tire pressing
outward on each square inch
of the tire. Air pressure is
expressed in pounds per square
inch (psi) or kilopascal (kPa).
Accessory Weight
:This
means the combined weight
of optional accessories.
Some examples of optional
accessories are, automatic
transmission, power steering,
power brakes, power windows,
power seats, and air
conditioning.
Aspect Ratio
:The relationship
of a tire’s height to its width.Belt
:A rubber coated layer of
cords that is located between the
plies and the tread. Cords may
be made from steel or other
reinforcing materials.
Bead
:The tire bead contains
steel wires wrapped by steel
cords that hold the tire onto
the rim.
Bias Ply Tire
:A pneumatic tire
in which the plies are laid at
alternate angles less than
90 degrees to the centerline of
the tread.
Cold Tire Pressure
:The
amount of air pressure in a tire,
measured in pounds per square
inch (psi) or kilopascals (kPa)
before a tire has built up heat
from driving. SeeInflation - Tire
Pressure on page 9-49.Curb Weight
:The weight of a
motor vehicle with standard
and optional equipment including
the maximum capacity of fuel,
oil, and coolant, but without
passengers and cargo.
DOT Markings
:A code molded
into the sidewall of a tire
signifying that the tire is in
compliance with the U.S.
Department of Transportation
(DOT) motor vehicle safety
standards. The DOT code
includes the Tire Identication
Number (TIN), an alphanumeric
designator which can also
identify the tire manufacturer,
production plant, brand, and date
of production.
GVWR
:Gross Vehicle Weight
Rating. SeeLoading the Vehicle
on page 8-30.
9-46 Vehicle Service and Care