2008 PONTIAC G6 cooling

To cancel the rear door security lock, do the following:
1. Unlock the door and open it from the outside.
2. Insert the key into the security lock slot and turn it
so the slot is in the vertical position.
3. Do the same for the other rear door.
Lockout Protection
This feature prevents the driver’s door from being
locked using the power door locks, if the key is left in
the ignition and a door is open.
Press the power door lock switch to lock all the doors
and then unlock the driver’s door.
Press and hold the power door lock switch for more
than three seconds to override this feature.
If the key is removed from the ignition, or if the manual
door lock or the Remote Keyless Entry (RKE)
transmitter is used, the key could still be locked inside
the vehicle. Always remember to take the key with you.
Trunk
To open the trunk from the outside, press and hold the
trunk release button on the Remote Keyless Entry
(RKE) transmitter. You can also use the key in the trunk
lock, except on retractable hardtop models.Use the pull cup to aid in closing the trunk.
{CAUTION:
It can be dangerous to drive with the trunk lid
open because carbon monoxide (CO) gas can
come into your vehicle. You cannot see or
smell CO. It can cause unconsciousness and
even death. If you must drive with the trunk lid
open or if electrical wiring or other cable
connections must pass through the seal
between the body and the trunk lid:
Make sure all other windows are shut.
Turn the fan on your heating or cooling
system to its highest speed and select the
control setting that will force outside air
into your vehicle. See Climate Control
System.
If you have air outlets on or under the
instrument panel, open them all the way.
SeeEngine Exhaust on page 2-35.
2-13

When adding electrical equipment, be sure to follow the
proper installation instructions included with the
equipment.
Notice:Improper use of the power outlet can cause
damage not covered by your warranty. Do not
hang any type of accessory or accessory bracket
from the plug because the power outlets are
designed for accessory power plugs only.
Climate Controls
Climate Control System
The heating, cooling, and ventilation for your vehicle
can be controlled with this system. If your vehicle
has the remote start feature, the climate control system
functions as part of the remote start feature. See
Remote Keyless Entry (RKE) System Operation on
page 2-4.
Operation
9
(Fan):Turn the left knob clockwise or
counterclockwise to increase or decrease the
fan speed. The fan must be on to run the air conditioning
compressor.
To change the air delivery settings, turn the right knob
to select one of the following:
H(Vent):Turn the knob to this mode to direct air to
the instrument panel outlets.
)(Bi-Level):Turn the knob to this mode to direct half
of the air to the instrument panel outlets, and the
remaining air to the oor outlets. Some air may be
directed toward the side windows.
3-19

Automatic Climate Control System
If your vehicle has this system, the heating, cooling, and
ventilation can be automatically controlled in your vehicle.
Automatic Operation
AUTO (Automatic):Select AUTO on both the fan
speed control and the air delivery mode control knobs to
activate the automatic system. Automatic operation
controls the inside temperature and air delivery.
Use the steps below to place the climate control system
in automatic mode:
1. Turn the fan knob and the mode knob to AUTO.
The display shows the current set temperature.
When auto is selected, the air conditioning operation
and air inlet is automatically controlled. The airconditioning compressor runs when the outside
temperature is over about 40°F (4°C). The air inlet
is normally set to outside air. If it is hot outside,
the air inlet can automatically switch to recirculate
inside air to help quickly cool down your vehicle.
2. Set the temperature.
To nd your comfort setting, start with an initial
temperature setting and allow about 20 minutes for
the system to regulate. Press the up or down
arrow temperature buttons to adjust the temperature
setting as necessary. If you choose the temperature
setting of 60°F (15°C) the system remains at the
maximum cooling setting. If you choose the
temperature setting of 90°F (32°C) the system
remains at the maximum heat setting. Choosing
either maximum setting will not cause the vehicle to
heat or cool faster.
Be careful not to cover the sensor located on the
top of the instrument panel near the windshield. This
sensor regulates air temperature based on sun
load, and also turns on your headlamps.
Also be careful not to cover the sensor grille on the
lower right side of the climate control faceplate.
This senses the inside vehicle temperature needed
for proper regulation.
3-23

Highway Hypnosis
Always be alert and pay attention to your surroundings
while driving. If you become tired or sleepy, nd a
safe place to park your vehicle and rest.
Other driving tips include:
Keep the vehicle well ventilated.
Keep interior temperature cool.
Keep your eyes moving — scan the road ahead
and to the sides.
Check the rearview mirror and vehicle
instruments often.
Hill and Mountain Roads
Driving on steep hills or through mountains is different
than driving on at or rolling terrain. Tips for driving
in these conditions include:
Keep your vehicle serviced and in good shape.
Check all uid levels and brakes, tires, cooling
system, and transmission.
Going down steep or long hills, shift to a
lower gear.
{CAUTION:
If you do not shift down, the brakes could get
so hot that they would not work well. You
would then have poor braking or even none
going down a hill. You could crash. Shift down
to let the engine assist the brakes on a steep
downhill slope.
4-14

Maximum trailer weight is calculated assuming only the
driver is in the tow vehicle and it has all the required
trailering equipment. The weight of additional optional
equipment, passengers and cargo in the tow vehicle
must be subtracted from the maximum trailer weight.
When towing a trailer on long uphill grades and
the outside temperature is above 85°F (29°C), reduce
your vehicle speed to 45 mph (72 km/h) to avoid
overheating the engine cooling system.
Ask your dealer/retailer for additional trailering
information or advice, or write us at our Customer
Assistance Offices. SeeCustomer Assistance Offices on
page 7-5for more information.
Weight of the Trailer Tongue
The tongue load (A) of any trailer is an important weight
to measure because it affects the total or gross weight of
your vehicle. The Gross Vehicle Weight (GVW) includes
the curb weight of the vehicle, any cargo you may carry in
it, and the people who will be riding in the vehicle. If you
have a lot of options, equipment, passengers or cargo in
your vehicle, it will reduce the tongue weight your vehicle
can carry, which will also reduce the trailer weight your
vehicle can tow. And if you tow a trailer, you must include
the tongue load in the GVW because your vehicle will be
carrying that weight, too. SeeLoading Your Vehicle on
page 4-20for more information about your vehicle’s
maximum load capacity.If you are using a weight-carrying hitch, the trailer
tongue (A) should weigh 10 to 15 percent of the total
loaded trailer weight (B).
After you have loaded your trailer, weigh the trailer and
then the tongue, separately, to see if the weights are
proper. If they are not, you may be able to get them right
simply by moving some items around in the trailer.
Total Weight on Your Vehicle’s Tires
Be sure your vehicle’s tires are inated to the upper limit
for cold tires. You will nd these numbers on the
Tire-Loading Information label at the rear edge of the
driver’s door or seeLoading Your Vehicle on page 4-20.
Then be sure you do not go over the GVW limit for
your vehicle, including the weight of the trailer tongue.
4-30

Driving On Grades
When towing a trailer on long uphill grades and the
outside temperature is above 85°F (29°C), reduce your
vehicle speed to 45 mph (72 km/h) to avoid overheating
the engine cooling system.
Reduce speed and shift to a lower gearbeforeyou start
down a long or steep downgrade. If you do not shift
down, you might have to use your brakes so much that
they would get hot and no longer work well.
Parking on Hills
{CAUTION:
You really should not park your vehicle, with a
trailer attached, on a hill. If something goes
wrong, your rig could start to move. People
can be injured, and both your vehicle and the
trailer can be damaged.But if you ever have to park your rig on a hill, here is
how to do it:
1. Apply your regular brakes, but do not shift into
PARK (P) for an automatic transmission or into
gear for a manual transmission. When parking
uphill, turn your wheels away from the curb. When
parking downhill, turn your wheels into the curb.
2. Have someone place chocks under the trailer
wheels.
3. When the chocks are in place, release the regular
brakes until the chocks absorb the load.
4. Reapply the regular brakes. Then apply your
parking brake and shift into PARK (P).
5. Release the regular brakes.
4-33

When You Are Ready to Leave After
Parking on a Hill
1. Apply your regular brakes and hold the pedal down
while you:
start your engine,
shift into a gear, and
release the parking brake.
2. Let up on the brake pedal.
3. Drive slowly until the trailer is clear of the chocks.
4. Stop and have someone pick up and store the
chocks.
Maintenance When Trailer Towing
Your vehicle will need service more often when you are
pulling a trailer. See the Maintenance Schedule for
more on this. Things that are especially important in
trailer operation are automatic transmission uid (do not
overll), engine oil, drive belt, cooling system and
brake system. Each of these is covered in this manual,
and the Index will help you nd them quickly. If you
are trailering, it is a good idea to review this information
before you start your trip.
Check periodically to see that all hitch nuts and bolts
are tight.
Engine Cooling When Trailer Towing
Your cooling system may temporarily overheat during
severe operating conditions. SeeEngine Overheating on
page 5-33.
4-34

Service............................................................5-4
Accessories and Modications..........................5-4
California Proposition 65 Warning.....................5-5
California Perchlorate Materials Requirements.....5-5
Doing Your Own Service Work.........................5-5
Adding Equipment to the Outside of Your
Vehicle......................................................5-6
Fuel................................................................5-6
Gasoline Octane............................................5-6
Gasoline Specications....................................5-7
California Fuel...............................................5-7
Additives.......................................................5-8
Fuels in Foreign Countries...............................5-8
Filling the Tank..............................................5-9
Filling a Portable Fuel Container.....................5-11
Checking Things Under
the Hood....................................................5-12
Hood Release..............................................5-12
Engine Compartment Overview.......................5-14
Engine Oil...................................................5-21
Engine Oil Life System..................................5-24
Engine Air Cleaner/Filter................................5-26
Automatic Transmission Fluid
(3.9L Engine)............................................5-27Automatic Transmission Fluid
(2.4L L4, 3.5L and 3.6L V6 Engines)............5-30
Engine Coolant.............................................5-30
Pressure Cap...............................................5-33
Engine Overheating.......................................5-33
Overheated Engine Protection
Operating Mode........................................5-35
Cooling System............................................5-36
Power Steering Fluid.....................................5-40
Windshield Washer Fluid................................5-41
Brakes........................................................5-42
Battery........................................................5-45
Jump Starting...............................................5-46
Bulb Replacement..........................................5-51
Halogen Bulbs..............................................5-52
Headlamps, Front Turn Signal, Sidemarker,
and Parking Lamps....................................5-52
Center High-Mounted Stoplamp (CHMSL)
(Sedan)...................................................5-54
Center High-Mounted Stoplamp (CHMSL)
(Retractable Hardtop and Coupe).................5-54
Taillamps, Turn Signal, Sidemarker, Stoplamps
and Back-up Lamps (Sedan).......................5-55
Taillamps, Turn Signal, Sidemarker, Stoplamps
and Back-up Lamps (Coupe).......................5-56
Section 5 Service and Appearance Care
5-1