2009 PONTIAC G3 cooling

Climate Controls
Climate Control System
The heating, cooling, and ventilation for the vehicle can
be controlled with this system.
A. Temperature Control
B. Fan Control
C. Air Delivery Mode
ControlD. Air Conditioning (A/C)
E. Recirculation
F. Rear Window
DefoggerA. Temperature Control
B. Fan Control
C. Air Delivery Mode
ControlD. Rear Window
Defogger
E. Outside Air/
Recirculation
Climate Control System with Heater and
Air Conditioning
Climate Control System with Heater Only
3-18

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 the 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.
{CAUTION:
Coasting downhill in N (Neutral) or with the ignition
off is dangerous. The brakes will have to do all the
work of slowing down and 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 the engine running
and the vehicle in gear when going downhill.
Stay in your own lane. Do not swing wide or cut
across the center of the road. Drive at speeds
that let you stay in your own lane.
Top of hills: Be alert — something could be in your
lane (stalled car, accident).
Pay attention to special road signs (falling rocks
area, winding roads, long grades, passing or
no-passing zones) and take appropriate action.
4-13

Service............................................................5-3
Accessories and Modications..........................5-3
California Proposition 65 Warning.....................5-4
California Perchlorate Materials Requirements.....5-4
Doing Your Own Service Work.........................5-4
Adding Equipment to the Outside of
the Vehicle.................................................5-5
Fuel................................................................5-5
Gasoline Octane............................................5-5
Gasoline Specications....................................5-6
California Fuel...............................................5-6
Additives.......................................................5-6
Fuels in Foreign Countries...............................5-7
Filling the Tank..............................................5-8
Filling a Portable Fuel Container.....................5-10
Checking Things Under the Hood....................5-10
Hood Release..............................................5-11
Engine Compartment Overview.......................5-12
Engine Oil...................................................5-13
Engine Oil Life System..................................5-16
Engine Air Cleaner/Filter................................5-18
Automatic Transmission Fluid.........................5-19
Manual Transmission Fluid.............................5-21
Hydraulic Clutch...........................................5-21
Cooling System............................................5-22
Engine Coolant.............................................5-23Engine Overheating.......................................5-28
Power Steering Fluid.....................................5-30
Windshield Washer Fluid................................5-31
Brakes........................................................5-32
Battery........................................................5-35
Jump Starting...............................................5-36
Headlamp Aiming...........................................5-42
Bulb Replacement..........................................5-42
Halogen Bulbs
..............................................5-42
Headlamps..................................................5-43
Front Turn Signal, Sidemarker and
Parking Lamps..........................................5-44
Center High-Mounted Stoplamp (CHMSL)
(Hatchback)..............................................5-46
Center High-Mounted Stoplamp (CHMSL)
(Sedan)...................................................5-46
Taillamps, Turn Signal, Sidemarker,
Stoplamps and Back-up Lamps...................5-47
License Plate Lamp......................................5-48
Replacement Bulbs.......................................5-48
Windshield Wiper Blade Replacement..............5-49
Tires..............................................................5-50
Tire Sidewall Labeling...................................5-51
Tire Terminology and Denitions.....................5-54
Ination - Tire Pressure.................................5-57
Section 5 Service and Appearance Care
5-1

A.Engine Air Cleaner/Filter on page 5-18.
B. Engine Oil Fill Cap. See “When to Add Engine Oil”
underEngine Oil on page 5-13.
C. Brake/Clutch Fluid Reservoir. See “Brake Fluid”
underBrakes on page 5-32andHydraulic Clutch
on page 5-21.
D. Engine Coolant Surge Tank. SeeCooling System on
page 5-22.
E.Engine Compartment Fuse Block on page 5-90.
F.Battery on page 5-35.
G. Windshield Washer Fluid Reservoir. See “Adding
Washer Fluid” underWindshield Washer Fluid
on page 5-31.
H. Engine Oil Dipstick. See “Checking Engine Oil”
underEngine Oil on page 5-13.
I. Automatic Transmission Dipstick. SeeAutomatic
Transmission Fluid on page 5-19.
J. Power Steering Fluid Reservoir. SeePower Steering
Fluid on page 5-30.Engine Oil
If the engine oil pressure
light comes on, check the
engine oil level right away.
The oil pressure light is on the instrument panel cluster.
SeeOil Pressure Light on page 3-34. Check the engine
oil level regularly; this is an added reminder.
5-13

How to Check and Add Fluid
The reservoir is located near the back of the engine
compartment on the driver side of the vehicle.
SeeEngine Compartment Overview on page 5-12
for more information on location.
To check the uid level, look on the side of the reservoir.
If the uid reaches the MAX (A) mark on the reservoir,
the uid level is correct. If the uid does not reach
the MIN (B) mark on the reservoir, then uid needs
to be added.
Cooling System
The cooling system allows the engine to maintain the
correct working temperature.
A. Electric Engine Cooling Fan
B. Coolant Surge Tank with Pressure Cap
5-22

{CAUTION:
An electric engine cooling fan under the hood can
start up even when the engine is not running and
can cause injury. Keep hands, clothing, and tools
away from any underhood electric fan.
{CAUTION:
Heater and radiator hoses, and other engine parts,
can be very hot. Do not touch them. If you do, you
can be burned.
Do not run the engine if there is a leak. If you run
the engine, it could lose all coolant. That could
cause an engine re, and you could be burned.
Get any leak xed before you drive the vehicle.Notice:Using coolant other than DEX-COOL
®can
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 the vehicle warranty. Always use
DEX-COOL
®(silicate-free) coolant in the vehicle.
Engine Coolant
The cooling system in the vehicle is lled with
DEX-COOL®engine coolant. This coolant is designed
to remain in the vehicle for ve years or 150,000 miles
(240 000 km), whichever occurs rst.
The following explains the cooling system and how to
check and add coolant when it is low. If there is a problem
with engine overheating, seeEngine Overheating on
page 5-28.
5-23

What to Use
{CAUTION:
Adding only plain water to the cooling system can
be dangerous. Plain water, or some other liquid
such as alcohol, can boil before the proper coolant
mixture will. The vehicle’s coolant warning system
is set for the proper coolant mixture. With plain
water or the wrong mixture, the engine could
get too hot but you would not get the overheat
warning. The engine could catch re and you or
others could be burned. Use a 50/50 mixture of
clean, drinkable water and DEX-COOL
®coolant.
Use a 50/50 mixture of clean, drinkable water and
DEX-COOL
®coolant. If using this mixture, nothing
else needs to be added. This mixture:
Gives freezing protection down to−34°F (−37°C),
outside temperature.
Gives boiling protection up to 265°F (129°C),
engine temperature.
Protects against rust and corrosion.
Will not damage aluminum parts.
Helps keep the proper engine temperature.Notice:If an improper coolant mixture is used,
the engine could overheat and be badly damaged.
The repair cost would not be covered by the vehicle
warranty. Too much water in the mixture can freeze
and crack the engine, radiator, heater core, and
other parts.
Notice:If extra inhibitors and/or additives are used
in the vehicle’s cooling system, the vehicle could
be damaged. Use only the proper mixture of
the engine coolant listed in this manual for the
cooling system. SeeRecommended Fluids and
Lubricants on page 6-12for more information.
Checking Coolant
The vehicle must be on a level surface when checking
the coolant level.
Check to see if coolant is visible in the coolant surge
tank. If the coolant inside the coolant surge tank is boiling,
do not do anything else until it cools down. If coolant is
visible but the coolant level is not between the Minimum
and Maximum marks, add a 50/50 mixture of clean,
drinkable water and DEX-COOL
®coolant at the coolant
surge tank, but be sure the cooling system is cool before
this is done. SeeEngine Coolant on page 5-23for more
information.
5-24

The engine coolant surge tank is located in the rear
of the engine compartment on the driver side of
the vehicle. SeeEngine Compartment Overview
on page 5-12for more information on location.
{CAUTION:
Turning the surge tank pressure cap when the
engine and radiator are hot can allow steam and
scalding liquids to blow out and burn you badly.
Never turn the surge tank pressure cap — even
a little — when the engine and radiator are hot.
When the engine is cold, the coolant level should
be between the Maximum (A) and Minimum (B) marks
on the coolant surge tank. The level rises at engine
operation temperature and drops again when the
engine cools down.
The coolant should be between the Maximum (A) and
Minimum (B) marks, when the engine is cold. If it is not,
there could be a leak in the cooling system.
5-25