cooling PONTIAC G6 2007 Owners Manual

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.
CAUTION: (Continued)
CAUTION: (Continued)
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 140.
113

Certain electrical accessories may not be
compatible with the accessory power outlet and
could result in blown vehicle or adapter fuses.
If you experience a problem, see your dealer for
additional information on the accessory power
outlet.
Notice:Adding any electrical equipment to
your vehicle may damage it or keep other
components from working as they should.
The repairs would not be covered by your
warranty. Do not use equipment exceeding
maximum amperage rating of 20 amperes.
Check with your dealer before adding electrical
equipment.
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
With this system you can control the heating,
cooling and ventilation for your vehicle. If
your vehicle has the remote start feature, the
climate control system functions as part of
the remote start feature. SeeRemote Keyless
Entry System Operation on page 101.
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.
182

Automatic Climate Control System
If your vehicle has this system, you can
automatically control the heating, cooling and
ventilation 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 air conditioning 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.
187

If you drive regularly in steep country, or if you are
planning to visit there, here are some tips that
can make your trips safer and more enjoyable.
Keep your vehicle in good shape. Check
all uid levels and also the brakes, tires,
cooling system, and transaxle. These parts
can work hard on mountain roads.
{CAUTION:
If you do not shift down, your 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 your engine assist
your brakes on a steep downhill slope.
{CAUTION:
Coasting downhill in NEUTRAL (N) or with
the ignition off is dangerous. Your brakes
will have to do all the work of slowing
down. They 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. Always have your
engine running and your vehicle in gear
when you go downhill.
Know how to go down hills. The most important
thing to know is this: let your engine do some of
the slowing down. Shift to a lower gear when
you go down a steep or long hill.
Know how to go uphill. Drive in the highest gear
possible.
281

Three important considerations have to do with
weight:
the weight of the trailer
the weight of the trailer tongue
and the total weight on your vehicle’s tires.
Weight of the Trailer
How heavy can a trailer safely be?
It should never weigh more than 1,000 lbs
(453 kg). But even that can be too heavy.
It depends on how you plan to use your rig. For
example, speed, altitude, road grades, outside
temperature and how much your vehicle is used to
pull a trailer are all important. It can also depend
on any special equipment that you have on
your vehicle, and the amount of tongue weight the
vehicle can carry. See “Weight of the Trailer
Tongue” later in this section for more information.
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.
You can ask your dealer for additional trailering
information or advice, or you can write us at:
Pontiac-GMC Customer Assistance
P.O. Box 33172
Detroit, MI 48232-5172
In Canada, write to:
General Motors of Canada Limited
Customer Communication Centre, 163-005
1908 Colonel Sam Drive
Oshawa, Ontario L1H 8P7
298

Making Turns
Notice:Making very sharp turns while
trailering could cause the trailer to come in
contact with the vehicle. Your vehicle could be
damaged. Avoid making very sharp turns
while trailering.
When you are turning with a trailer, make wider
turns than normal. Do this so your trailer will not
strike soft shoulders, curbs, road signs, trees or
other objects. Avoid jerky or sudden maneuvers.
Signal well in advance.
Turn Signals When Towing a Trailer
When you tow a trailer, your vehicle may need a
different turn signal asher and/or extra wiring.
Check with your dealer. The arrows on your
instrument panel will ash whenever you signal a
turn or lane change. Properly hooked up, the
trailer lamps will also ash, telling other drivers you
are about to turn, change lanes or stop.When towing a trailer, the arrows on your
instrument panel will ash for turns even if the bulbs
on the trailer are burned out. Thus, you may think
drivers behind you are seeing your signal when
they are not. It is important to check occasionally to
be sure the trailer bulbs are still working.
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.
302

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 transaxle 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 342.
304

Service........................................................ 308
Accessories and Modications................... 308
California Proposition 65 Warning.............. 309
Doing Your Own Service Work.................. 309
Adding Equipment to the Outside of
Your Vehicle.......................................... 310
Fuel............................................................. 310
Gasoline Octane........................................ 310
Gasoline Specications.............................. 310
California Fuel........................................... 311
Additives................................................... 311
Fuels in Foreign Countries........................ 312
Filling the Tank......................................... 313
Filling a Portable Fuel Container............... 315
Checking Things Under
the Hood.................................................. 316
Hood Release........................................... 317
Engine Compartment Overview.................. 318
Engine Oil................................................. 325
Engine Oil Life System.............................. 328
Engine Air Cleaner/Filter............................ 330
Automatic Transaxle Fluid
(2.4L L4 and 3.5L V6 Engines).............. 332Automatic Transaxle Fluid
(3.6L Engine)......................................... 332
Automatic Transaxle Fluid
(3.9L V6 Engine).................................... 335
Manual Transaxle Fluid............................. 338
Hydraulic Clutch........................................ 338
Engine Coolant.......................................... 339
Pressure Cap............................................ 342
Engine Overheating................................... 342
Overheated Engine Protection
Operating Mode..................................... 344
Cooling System......................................... 345
Power Steering Fluid ................................. 349
Windshield Washer Fluid........................... 350
Brakes...................................................... 352
Battery...................................................... 355
Jump Starting............................................ 356
Bulb Replacement....................................... 361
Halogen Bulbs........................................... 361
Headlamps, Front Turn Signal,
Sidemarker, and Parking Lamps............. 362
Center High-Mounted
Stoplamp (CHMSL) (Sedan)................... 363
Section 5 Service and Appearance Care
305

A. Engine Air Cleaner/Filter. SeeEngine Air
Cleaner/Filter on page 330.
B. Power Steering Fluid Reservoir. SeePower
Steering Fluid on page 349.
C. Engine Oil Fill Cap. See “When to Add Engine
Oil” underEngine Oil on page 325.
D. Engine Oil Dipstick. See “Checking Engine Oil”
underEngine Oil on page 325.
E. Electric Engine Cooling Fans. SeeCooling
System on page 345.
F. Engine Coolant Surge Tank. SeeEngine
Coolant on page 339.
G. Pressure Cap. SeePressure Cap on page 342.H. Brake Master Cylinder Reservoir. See “Brake
Fluid” underBrakes on page 352.
I. Automatic Transaxle Fluid Dipstick (Out of
View). See “Checking the Fluid Level” under
Automatic Transaxle Fluid (2.4L L4 and 3.5L V6
Engines) on page 332orAutomatic Transaxle
Fluid (3.6L Engine) on page 332orAutomatic
Transaxle Fluid (3.9L V6 Engine) on page 335.
J. Battery. SeeBattery on page 355.
K. Underhood Fuse Block. SeeEngine
Compartment Fuse Block on page 418.
L. Windshield Washer Fluid Reservoir. See
“Adding Washer Fluid” underWindshield
Washer Fluid on page 350.
323

Engine Coolant
The cooling system in your vehicle is lled with
DEX-COOL®engine coolant. This coolant is
designed to remain in your vehicle for ve years or
150,000 miles (240 000 km), whichever occurs rst,
if you add only DEX-COOL
®extended life coolant.
The following explains your cooling system and
how to add coolant when it is low. If you have a
problem with engine overheating, seeEngine
Overheating on page 342.A 50/50 mixture of clean, drinkable water and
DEX-COOL
®coolant will:
Give freezing protection down to
−34°F (−37°C).
Give boiling protection up to 265°F (129°C).
Protect against rust and corrosion.
Help keep the proper engine temperature.
Let the warning lights and gages work as they
should.
Notice:Using coolant other than DEX-COOL
®
may cause premature engine, heater core,
or radiator corrosion. In addition, the engine
coolant may require changing sooner, at
the rst maintenance service after each
30,000 miles (50 000 km) or 24 months,
whichever occurs rst. Any repairs would not
be covered by your warranty. Always use
DEX-COOL
®(silicate-free) coolant in your
vehicle.
339